Nyt fra tidsskrifterne
47 ud af 47 tidsskrifter valgt, søgeord (meningitis) valgt, emner højest 180 dage gamle, sorteret efter nyeste først.
71 emner vises.
BMC Infectious Diseases, 8.11.2024
Tilføjet 8.11.2024
Prasad S Kulkarni, Anand Kawade, Sunil Kohli, Renuka Munshi, Chetna Maliye, Nithya J Gogtay, Ravish H S, Kiranjit Singh, K Vengadakrishnan, Sandeep Kumar Panigrahi, Jyotiranjan Sahoo, Ashish Bavdekar, B S Garg, Abhishek Raut, Jeffrey P Raj, Unnati Saxena, Vijaya L Chaudhari, Rakesh Patil, Epari Venkatarao, Nitu Kumari, Jithin Surendran, Varsha Parulekar, Luc Gagnon, Tania Gensale, Abhijeet Dharmadhikari, Sunil Gairola, Sameer Kale, Sambhaji S Pisal, Rajeev M Dhere, Asha Mallya, Cyrus S Poonawalla, Dhananjay Kapse
Lancet Infectious Diseases, 7.11.2024
Tilføjet 7.11.2024
NmCV-5 was non-inferior to MenACWY-D in terms of seroresponse and GMTs, was safe, and demonstrated lot-to-lot consistency. NmCV-5 is prequalified by WHO and was rolled out in the African meningitis belt in April, 2024.
Læs mere Tjek på PubMedGiancarlo Ceccarelli, Francesco Branda, Fabio Scarpa, Massimo Ciccozzi, Luiz Carlos Junior Alcantara, Marta Giovanetti
International Journal of Infectious Diseases, 7.11.2024
Tilføjet 7.11.2024
Oropouche virus (OROV), a member of the Peribunyaviridae family, has emerged as a significant arboviral threat, particularly in South and Central America. Traditionally causing mild febrile illness, recent outbreaks have revealed severe clinical outcomes, including aseptic meningitis, encephalitis, and, more recently, vertical transmission leading to congenital anomalies and fatalities. Environmental changes, including deforestation and climate shifts, have expanded the virus\'s geographic range, as seen in Brazil, where over 8,000 cases were reported by August 2024, compared to fewer than 831in 2023.
Læs mere Tjek på PubMedAmerican Journal of Tropical Medicine and Hygiene, 6.11.2024
Tilføjet 6.11.2024
Journal Name: The American Journal of Tropical Medicine and Hygiene Volume: 111 Issue: 5 Pages: 1024-1026
Læs mere Tjek på PubMedBMC Infectious Diseases, 6.11.2024
Tilføjet 6.11.2024
Beltran-Reyes, Paula; Ostrosky-Zeichner, Luis; Gonzalez-Lara, Maria F.
Current Opinion in Infectious Diseases, 1.11.2024
Tilføjet 1.11.2024
Purpose of review Recently, fungal meningitis outbreaks have occurred in association with neuraxial and epidural anesthesia in immunocompetent patients. Herein, we describe the course of those outbreaks, their diagnosis, treatment, prognosis, and lessons learned. Recent findings Two outbreaks of Fusarium solani meningitis during 2022–2023 were associated with epidural anesthesia in two distant cities in Mexico (Durango and Matamoros). The initial etiological agent identification was delayed due to insensitivity of cultures. A Fusarium solani qPCR was validated and positive in 38% cerebrospinal fluid (CSF) samples from Durango, while BD-Glucan allowed early diagnosis of the index case in Matamoros. Antifungal treatment with voriconazole and liposomal amphotericin B (L-AmB) was recommended. Overall mortality was 51%. Once the cause was confirmed, some patients received fosmanogepix. Summary Fungal meningitis outbreaks due to filamentous fungi are usually associated with direct epidural inoculation. They result in severe presentations and high mortality. Early diagnosis should be suspected, BD-Glucan CSF testing screening is recommended. Aggressive antifungal treatment based on antifungal susceptibility testing should be administered as early as possible. The advent of molecular diagnostic methods and new antifungal drugs may allow for timely diagnosis and treatment, increasing the chances of survival.
Læs mere Tjek på PubMedNeoh, Chin Fen; Slavin, Monica A.
Current Opinion in Infectious Diseases, 1.11.2024
Tilføjet 1.11.2024
Purpose of review Given the high mortality and morbidity associated with invasive fungal diseases (IFDs), the use of combination antifungal therapies is often considered despite the dearth of data. This review aims to summarize the current state of literature of combination antifungal therapies, discussing the potential roles of newer antifungal combinations and key considerations for their clinical use. Recent findings In infections other than cryptococcal meningitis or in the setting of empirical treatment for suspected azole-resistant Aspergillus infections, the utility of the combination antifungal approaches remains controversial given the paucity of well designed randomized controlled trials. Data on potential combined antifungal treatments have been primarily limited to in-vitro studies, animal models, case reports and/or observational studies. With availability of novel antifungal agents (e.g. ibrexafungerp, fosmanogepix), combination therapy to treat mould infections should be re-visited. A phase 2 clinical trial of ibrexafungerp combined with voriconazole to treat invasive pulmonary aspergillosis is on-going. Summary There is a need to investigate the use of combination antifungal agents. This includes delineating the indication of these combined antifungal therapies and determining how to use them most appropriately in the clinical setting.
Læs mere Tjek på PubMedPamela Mosquera, Lorena Mejia, Gabriela Ortiz, Giuliana Pazmino, Talima Pearson, Verónica Barragán, Gabriel Trueba
PLoS One Infectious Diseases, 29.10.2024
Tilføjet 29.10.2024
by Pamela Mosquera, Lorena Mejia, Gabriela Ortiz, Giuliana Pazmino, Talima Pearson, Verónica Barragán, Gabriel Trueba Background Leptospirosis is one of the most common zoonoses in the world which is associated with a severe febrile disease in humans causing a variety of syndromes including meningitis, interstitial nephritis, hepatitis, and sometimes death. Leptospirosis is caused by different pathogenic Leptospira species divided into almost 30 serogroups and more than 300 serovars which are carried by some animal asymptomatic chronic infections. Humans can become infected through direct contact with animal urine or indirectly by coming into contact with fresh water or mud contaminated with urine. Methodology/Principal findings In this research, we looked for leptospiral DNA in urine samples from dogs living in a rural, low-income and highly endemic community in the coast of Ecuador. We used molecular biology and next-generation sequencing for the detection. Our results showed evidence of two Leptospira species, L interrogans and L. santarosai, genomes in three dogs. Conclusions/Significance It has been widely known that animal carriers are typically infected with a single leptospiral strain. However, recent reports, including the present one, indicate that carrier animals may be coinfected with two or more leptospiral species.
Læs mere Tjek på PubMedIgnacio Vargas-Castro, Federica Giorda, Virginia Mattioda, Maria Goria, Laura Serracca, Katia Varello, Valerio Carta, Sabrina Nodari, Maria Grazia Maniaci, Luana Dell’Atti, Camilla Testori, Nicola Pussini, Barbara Iulini, Roberta Battistini, Simona Zoppi, Fabio Di Nocera, Giuseppe Lucifora, Elena Fontanesi, Pierluigi Acutis, Cristina Casalone, Carla Grattarola, Simone Peletto
PLoS One Infectious Diseases, 24.10.2024
Tilføjet 24.10.2024
by Ignacio Vargas-Castro, Federica Giorda, Virginia Mattioda, Maria Goria, Laura Serracca, Katia Varello, Valerio Carta, Sabrina Nodari, Maria Grazia Maniaci, Luana Dell’Atti, Camilla Testori, Nicola Pussini, Barbara Iulini, Roberta Battistini, Simona Zoppi, Fabio Di Nocera, Giuseppe Lucifora, Elena Fontanesi, Pierluigi Acutis, Cristina Casalone, Carla Grattarola, Simone Peletto Herpesvirus (HV) is widely distributed among cetacean populations, with the highest prevalence reported in the Mediterranean Sea. In this study, a comprehensive analysis was conducted, including epidemiological, phylogenetic, and pathological aspects, with particular emphasis on neuropathology, to better understand the impact of HV in these animals. Our results show a higher presence of HV in males compared to females, with males exhibiting a greater number of positive tissues. Additionally, adults were more frequently affected by HV infection than juveniles, with no infections detected in calves or neonates. The affected species were striped (Stenella coeruleoalba) and bottlenose dolphins (Tursiops truncatus). The highest positivity rates were observed in the genital system, cerebrum, and skin tissues. Phylogenetic analysis indicated a higher occurrence of Gammaherpesvirus (GHV) sequences but increased genetic diversity within Alphaherpesvirus (AHV). Key neuropathological features included astro-microgliosis (n = 4) and meningitis with minimal to mild perivascular cuffing (n = 2). The presence of concurrent infections with other pathogens, particularly cetacean morbillivirus (CeMV), underscores the complex nature of infectious diseases in cetaceans. However, the presence of lesions at the Central Nervous System (CNS) with molecular positivity for GHV, excluding the involvement of other potential neurotropic agents, would confirm the potential of this HV subfamily to induce neurological damage. Pathological examination identified lesions in other organs that could potentially be associated with HV, characterized by lymphoid depletion and tissue inflammation. These findings enhance our understanding of HV in odontocetes and highlight the need for ongoing research into the factors driving these infections and their broader implications.
Læs mere Tjek på PubMedBMC Infectious Diseases, 23.10.2024
Tilføjet 23.10.2024
Abstract Background Pneumococcal meningitis, a vaccine-preventable disease caused by Streptococcus pneumoniae (Spn) is the leading bacterial meningitis in under five children. In April 2014, Uganda introduced routine immunization with 10-valent Pneumococcal Conjugate Vaccine (PCV10) for infants. The target coverage for herd immunity is ≥ 90% with three doses (PCV10-dose 3). We assessed the effect of PCV10 introduction and coverage on the trends of pneumococcal meningitis in under five children. Methods We analyzed laboratory-confirmed pediatric bacterial meningitis (PBM) data at two high-volume WHO-accredited sentinel surveillance hospitals in Kampala City and Gulu District, from 2003 to 2022. We used confirmed cases to estimate the minimum incidence of pneumococcal meningitis in the host districts and calculated annual incidence of pneumococcal meningitis per one million populations, and the proportion of confirmed PBM attributable to Spn. We divided the study period into 2003–2013 (pre-PCV10) and 2014–2022 (post-PCV10), and conducted interrupted time series analysis using autoregressive integrated moving average models for the effect of PCV10 on trends of pneumococcal meningitis and PBM attributable to Spn. We analyzed reported PCV10 data in DHIS2 from 2014 to 2022 for annual PCV10-dose 3 coverage. Results Among the 534 confirmed PBM cases, 331(62%) were pneumococcal meningitis; 227(69%) from Gulu District and 104(31%) from Kampala City. The majority (95%) of the isolates were not serotyped. The majority (57%) were male and unimmunized (98%); median age = 14(IQR = 6–27) months with most (55%) aged ≥ 12 months. The case-fatality rate was 9%. During Pre-PCV10 period, the overall incidence of pneumococcal meningitis in the host districts increased; slope change = 1.0 (95%CI = 0.99999, 1.00001) but declined in post-PCV10 period (2014–2022) by 92% from 86 cases /1,000,000 in 2014 to 7/1,000,000 in 2022, slope change= -1.00006 (95%CI=-1.00033, -0.99979). Whereas there was an immediate decline in the proportion of confirmed PBM attributable to Spn in the host districts, level change=-1.84611(95%CI=-1.98365,-1.70856), an upward trend was recorded from 2016 to 2022, slope change = 1.0 (95%CI = 0.99997, 1.00003). During 2015–2022, PCV10-dose 3 coverage was largely > 90% for Gulu District and 52–72% for Kampala City. Conclusion The PCV10 routine immunization program reduced the incidence of pneumococcal meningitis in Kampala City and Gulu District. There was no effect on the confirmed PBM proportionately attributable to Spn. Kampala City persistently recorded PCV10-dose3 coverage
Læs mere Tjek på PubMedBMC Infectious Diseases, 22.10.2024
Tilføjet 22.10.2024
Abstract Background Pneumococcal meningitis, a vaccine-preventable disease caused by Streptococcus pneumoniae (Spn) is the leading bacterial meningitis in under five children. In April 2014, Uganda introduced routine immunization with 10-valent Pneumococcal Conjugate Vaccine (PCV10) for infants. The target coverage for herd immunity is ≥ 90% with three doses (PCV10-dose 3). We assessed the effect of PCV10 introduction and coverage on the trends of pneumococcal meningitis in under five children. Methods We analyzed laboratory-confirmed pediatric bacterial meningitis (PBM) data at two high-volume WHO-accredited sentinel surveillance hospitals in Kampala City and Gulu District, from 2003 to 2022. We used confirmed cases to estimate the minimum incidence of pneumococcal meningitis in the host districts and calculated annual incidence of pneumococcal meningitis per one million populations, and the proportion of confirmed PBM attributable to Spn. We divided the study period into 2003–2013 (pre-PCV10) and 2014–2022 (post-PCV10), and conducted interrupted time series analysis using autoregressive integrated moving average models for the effect of PCV10 on trends of pneumococcal meningitis and PBM attributable to Spn. We analyzed reported PCV10 data in DHIS2 from 2014 to 2022 for annual PCV10-dose 3 coverage. Results Among the 534 confirmed PBM cases, 331(62%) were pneumococcal meningitis; 227(69%) from Gulu District and 104(31%) from Kampala City. The majority (95%) of the isolates were not serotyped. The majority (57%) were male and unimmunized (98%); median age = 14(IQR = 6–27) months with most (55%) aged ≥ 12 months. The case-fatality rate was 9%. During Pre-PCV10 period, the overall incidence of pneumococcal meningitis in the host districts increased; slope change = 1.0 (95%CI = 0.99999, 1.00001) but declined in post-PCV10 period (2014–2022) by 92% from 86 cases /1,000,000 in 2014 to 7/1,000,000 in 2022, slope change= -1.00006 (95%CI=-1.00033, -0.99979). Whereas there was an immediate decline in the proportion of confirmed PBM attributable to Spn in the host districts, level change=-1.84611(95%CI=-1.98365,-1.70856), an upward trend was recorded from 2016 to 2022, slope change = 1.0 (95%CI = 0.99997, 1.00003). During 2015–2022, PCV10-dose 3 coverage was largely > 90% for Gulu District and 52–72% for Kampala City. Conclusion The PCV10 routine immunization program reduced the incidence of pneumococcal meningitis in Kampala City and Gulu District. There was no effect on the confirmed PBM proportionately attributable to Spn. Kampala City persistently recorded PCV10-dose3 coverage
Læs mere Tjek på PubMedBMC Infectious Diseases, 22.10.2024
Tilføjet 22.10.2024
Abstract Background Streptococcus pneumoniae (S. pneumoniae), Haemophilus influenzae (H. influenzae), and Neisseria meningitidis (N. meningitidis) are leading causes of childhood bacterial meningitis and preventable by vaccines. The aim of this hospital-based sentinel surveillance is to describe the epidemiological characteristics of pneumococcal meningitis, including disease burden, and to provide baseline data on pneumococcal serotype distribution to support decision making for pneumococcal conjugate vaccine (PCV) introduction in Vietnam. Methods Surveillance for probable bacterial meningitis in children 1–59 months of age is conducted in three tertiary level pediatric hospitals: one in Hanoi and two in Ho Chi Minh City. Cerebrospinal fluid (CSF) specimens were collected via lumbar puncture from children with suspected meningitis. Specimens were transferred immediately to the laboratory department of the respective hospital for cytology, biochemistry, and microbiology testing, including culture. PCR testing was conducted on CSF specimens for bacterial detection (S. pneumoniae, H. influenzae, and N. meningitidis) and pneumococcal serotyping. Results During 2015–2018, a total of 1,803 children with probable bacterial meningitis were detected; 1,780 had CSF specimens available for testing. Of 245 laboratory-confirmed positive cases, the majority were caused by S. pneumoniae (229,93.5%). Of those with S. pneumoniae detected, over 70% were caused by serotypes included in currently available PCV products; serotypes 6 A/6B (27.1%), 14 (19.7%), and 23 F (16.2%) were the most common serotypes. Children with laboratory-confirmed pneumococcal meningitis were more likely to live in Hanoi (p
Læs mere Tjek på PubMedBMC Infectious Diseases, 19.10.2024
Tilføjet 19.10.2024
Abstract Background Streptococcus pneumoniae (S. pneumoniae), Haemophilus influenzae (H. influenzae), and Neisseria meningitidis (N. meningitidis) are leading causes of childhood bacterial meningitis and preventable by vaccines. The aim of this hospital-based sentinel surveillance is to describe the epidemiological characteristics of pneumococcal meningitis, including disease burden, and to provide baseline data on pneumococcal serotype distribution to support decision making for pneumococcal conjugate vaccine (PCV) introduction in Vietnam. Methods Surveillance for probable bacterial meningitis in children 1–59 months of age is conducted in three tertiary level pediatric hospitals: one in Hanoi and two in Ho Chi Minh City. Cerebrospinal fluid (CSF) specimens were collected via lumbar puncture from children with suspected meningitis. Specimens were transferred immediately to the laboratory department of the respective hospital for cytology, biochemistry, and microbiology testing, including culture. PCR testing was conducted on CSF specimens for bacterial detection (S. pneumoniae, H. influenzae, and N. meningitidis) and pneumococcal serotyping. Results During 2015–2018, a total of 1,803 children with probable bacterial meningitis were detected; 1,780 had CSF specimens available for testing. Of 245 laboratory-confirmed positive cases, the majority were caused by S. pneumoniae (229,93.5%). Of those with S. pneumoniae detected, over 70% were caused by serotypes included in currently available PCV products; serotypes 6 A/6B (27.1%), 14 (19.7%), and 23 F (16.2%) were the most common serotypes. Children with laboratory-confirmed pneumococcal meningitis were more likely to live in Hanoi (p
Læs mere Tjek på PubMedBMC Infectious Diseases, 18.10.2024
Tilføjet 18.10.2024
Abstract Background Tuberculous meningitis (TBM) is a severe central nervous system (CNS) infection with a challenging diagnosis due to inadequate detection methods. This study evaluated current clinical detection methods and their applicability. Methods A cohort of 514 CNS infection patients from 2018 to 2020 was studied. Data on general demographics, Cerebrospinal Fluid (CSF) analysis, epidemiology, and clinical outcomes were collected. TBM patients were identified, and the sensitivities of mmetagenomic next-generation sequencing (NGS), GeneXpert, and microbial culture were compared. Kappa statistic assessed the consistency between methods. Results Among the patients involved, TBM (29%) and neurosyphilis (25%) were the two most prevalent CNS infections. CSF analysis indicated that 76% of patients had leukocytosis, suggesting a potential CNS inflammation. In TBM cases, 92.5% had elevated CSF protein and leukocyte counts. Moreover, the percentage of positive mNGS results was 55.6%. GeneXpert and MTB cultures alone had lower sensitivity, but combined use resulted in a 53.4% positive rate. Conclusions This study highlights the high sensitivity of mNGS, comparable to GeneXpert and MTB culture. The combined methods are cost-effective and straightforward, and can partially substitute for mNGS, offering valuable alternatives for TBM diagnosis and providing insights into multiple diagnostic strategies in clinical practice.
Læs mere Tjek på PubMedBMC Infectious Diseases, 17.10.2024
Tilføjet 17.10.2024
Abstract Background Tuberculous meningitis (TBM) is a severe central nervous system (CNS) infection with a challenging diagnosis due to inadequate detection methods. This study evaluated current clinical detection methods and their applicability. Methods A cohort of 514 CNS infection patients from 2018 to 2020 was studied. Data on general demographics, Cerebrospinal Fluid (CSF) analysis, epidemiology, and clinical outcomes were collected. TBM patients were identified, and the sensitivities of mmetagenomic next-generation sequencing (NGS), GeneXpert, and microbial culture were compared. Kappa statistic assessed the consistency between methods. Results Among the patients involved, TBM (29%) and neurosyphilis (25%) were the two most prevalent CNS infections. CSF analysis indicated that 76% of patients had leukocytosis, suggesting a potential CNS inflammation. In TBM cases, 92.5% had elevated CSF protein and leukocyte counts. Moreover, the percentage of positive mNGS results was 55.6%. GeneXpert and MTB cultures alone had lower sensitivity, but combined use resulted in a 53.4% positive rate. Conclusions This study highlights the high sensitivity of mNGS, comparable to GeneXpert and MTB culture. The combined methods are cost-effective and straightforward, and can partially substitute for mNGS, offering valuable alternatives for TBM diagnosis and providing insights into multiple diagnostic strategies in clinical practice.
Læs mere Tjek på PubMedBMC Infectious Diseases, 17.10.2024
Tilføjet 17.10.2024
Abstract Background The diagnosis of healthcare-associated ventriculitis and meningitis (HCAVM) can be complex because multiple factors confound the interpretation of cerebrospinal fluid (CSF) tests. The cell index (CI) may help in the diagnosis of HCAVM. It does not incur additional medical cost and it avoids delays from the turnaround time of CSF cultures. It is derived by calculating the ratio of CSF white blood cell (WBC) and red blood cell (RBC) divided by the ratio of peripheral WBC and RBC. This study aimed to evaluate the diagnostic utility of this parameter. Methods An analytic, observational, cross-sectional study was conducted at the University of the Philippines – Philippine General Hospital. All admitted pediatric and adult patients from 2015 to 2022 who underwent external ventricular drain (EVD) insertion for hydrocephalus secondary to intracranial hemorrhage (ICH), acute ischemic stroke, intracranial neoplasms, traumatic brain injury, or congenital hydrocephalus were screened. Records of patients fulfilling the inclusion criteria were then reviewed. Results A total of 363 patients underwent EVD insertion from 2015 to 2022. Of these, 161 were included in the study. Two-thirds (66.5%) were adults ≥ 19 years old whereas the remaining were pediatric patients 1 to
Læs mere Tjek på PubMedBMC Infectious Diseases, 17.10.2024
Tilføjet 17.10.2024
Abstract Introduction Neurobrucellosis (NB) can be associated with meningitis and present as a headache with or without meningeal signs. Pseudotumor presentation of NB has been reported to be accompanied by lymphocytic predominant cerebrospinal fluid(CSF) pleocytosis. NB is diagnosed by means of isolation of Brucella from blood or CSF and/or the presence of anti-Brucella antibodies in the CSF. Molecular techniques have been used in chronic or challenging cases of NB. Clinical findings We report on seven cases of NB presenting with different types of headache and signs of meningeal involvement. In five cases, signs of intracranial hypertension were evident in the form of papilledema, sixth nerve palsy and blurred vision. Diagnosis MRIs of the brain revealed signs of intracranial hypertension in three patients, basal meningeal enhancement in one patient and white matter lesions in one patient. Brucella serology in the blood and CSF was negative in all patients. It was interesting that four patients had normocellular CSF analysis with normal glucose and protein results. The diagnosis was made by Brucella PCR in all patients. Conclusion NB should be considered in the differential diagnoses of pseudotumor cerebri syndrome in endemic areas. It is important to employ molecular techniques using sterile CSF samples in the investigation of Brucella.
Læs mere Tjek på PubMedBMC Infectious Diseases, 16.10.2024
Tilføjet 16.10.2024
Abstract Background The diagnosis of healthcare-associated ventriculitis and meningitis (HCAVM) can be complex because multiple factors confound the interpretation of cerebrospinal fluid (CSF) tests. The cell index (CI) may help in the diagnosis of HCAVM. It does not incur additional medical cost and it avoids delays from the turnaround time of CSF cultures. It is derived by calculating the ratio of CSF white blood cell (WBC) and red blood cell (RBC) divided by the ratio of peripheral WBC and RBC. This study aimed to evaluate the diagnostic utility of this parameter. Methods An analytic, observational, cross-sectional study was conducted at the University of the Philippines – Philippine General Hospital. All admitted pediatric and adult patients from 2015 to 2022 who underwent external ventricular drain (EVD) insertion for hydrocephalus secondary to intracranial hemorrhage (ICH), acute ischemic stroke, intracranial neoplasms, traumatic brain injury, or congenital hydrocephalus were screened. Records of patients fulfilling the inclusion criteria were then reviewed. Results A total of 363 patients underwent EVD insertion from 2015 to 2022. Of these, 161 were included in the study. Two-thirds (66.5%) were adults ≥ 19 years old whereas the remaining were pediatric patients 1 to
Læs mere Tjek på PubMedBMC Infectious Diseases, 14.10.2024
Tilføjet 14.10.2024
Abstract Introduction Neurobrucellosis (NB) can be associated with meningitis and present as a headache with or without meningeal signs. Pseudotumor presentation of NB has been reported to be accompanied by lymphocytic predominant cerebrospinal fluid(CSF) pleocytosis. NB is diagnosed by means of isolation of Brucella from blood or CSF and/or the presence of anti-Brucella antibodies in the CSF. Molecular techniques have been used in chronic or challenging cases of NB. Clinical findings We report on seven cases of NB presenting with different types of headache and signs of meningeal involvement. In five cases, signs of intracranial hypertension were evident in the form of papilledema, sixth nerve palsy and blurred vision. Diagnosis MRIs of the brain revealed signs of intracranial hypertension in three patients, basal meningeal enhancement in one patient and white matter lesions in one patient. Brucella serology in the blood and CSF was negative in all patients. It was interesting that four patients had normocellular CSF analysis with normal glucose and protein results. The diagnosis was made by Brucella PCR in all patients. Conclusion NB should be considered in the differential diagnoses of pseudotumor cerebri syndrome in endemic areas. It is important to employ molecular techniques using sterile CSF samples in the investigation of Brucella.
Læs mere Tjek på PubMedBMC Infectious Diseases, 13.10.2024
Tilføjet 13.10.2024
Abstract Background Pantoea agglomerans (P. agglomerans) is a gram-negative bacterium that is commonly isolated from plant surfaces, seeds, and the environment. As an opportunistic pathogen, it can cause blood, urinary and soft tissue infections in immunocompromised patients. In central nervous system, P. agglomerans infection has been report in children and immune-compromised patients, however, infection by such bacterium in nontraumatized immune competent adults has not been reported. Here, we report a case of P. agglomerans cerebrospinal meningitis accompanied by positive anti-myeloperoxidase (MPO) antibody in a 49-year-old female who has a history of black fungus planting. Case presentation The patient manifested with repeated fever, headache, generalized muscle pain, and neurological defects. Cerebrospinal fluid (CSF) tests revealed a moderately elevated number of polymorphonuclear leukocytes (50–193 × 106/L), low glucose levels (0.54–2.44 mmo1/L), and extremely high protein content (2.42–25.42 g/L). Blood tests showed positive anti-myeloperoxidase antibodies lasting for 1.5 year before turning negative. Spine MRI showed thickening and enhancement of the whole spinal meninges. CSF metagenomic next-generation sequencing (mNGS) revealed 75,189 specific DNA reads of P. agglomerans. The patient underwent spinal laminectomy due to meningeal adhesions. Pathological results revealed fibrous tissue proliferation, inflammatory infiltration with focal necrosis and calcification in the dura mater. The patient was successfully treated with sufficient antibiotics at 1-year follow-up. Conclusions People should be alert to CNS infections caused by P. agglomerans which presented with relatively mild clinical symptoms at onset, especially for those who contucts relevant agricultural and forestry work. The CSF characterization of P. agglomerans meningitis is elevated multiple nuclei white blood cells, significantly reduced glucose content, and markedly increased protein level which may be related to the secondary spinal membrane adhesions.
Læs mere Tjek på PubMedMooketsi Molefi, Olanrewaju Oladimeji
PLoS One Infectious Diseases, 12.10.2024
Tilføjet 12.10.2024
by Mooketsi Molefi, Olanrewaju Oladimeji The lack of culturally and contextually appropriate adaptations of health-related quality of life (HRQoL) tools hinders HIV patient outcomes. This study aims to assess the validity and reliability of a Tswana version of the Medical Outcome Survey-HIV (MOS-HIV) tool among diverse HIV sub-populations in Botswana. In terms of the methodology the study will comprise of several steps. Firstly, forward and back-translation of the original U.S. English MOS-HIV tool into Setswana, followed by the review of the translated tool. Phase 1 will evaluate content, construct validity, and reliability of the newly developed tool among HIV outpatients at Gaborone Infectious Diseases Clinics (IDCC). A Cronbach’s alpha coefficient >0.7 across the 35 items and 11 dimensions of the MOS-HIV tool will indicate internal consistency reliability. Phase 2 will employ the use of logistic regression models to identify predictors of poor HRQoL among randomly selected IDCC sites, both in urban and rural centers. Phase 3 will investigate predictors of poor HRQoL among inpatients receiving treatment for HIV-associated cryptococcal meningitis (CM) using longitudinal data analysis methods. Ethical approval has been obtained from the University of Botswana, Walter Sisulu University, Human Research and Development Unit, Ministry of Health, and Princess Marina Hospital. Prospective participants will provide written informed consent, with proxy consent explored when feasible. Voluntary participation and confidentiality will be ensured during data collection and analysis. Data will be securely stored under lock-and-key. Dissemination of study findings will adhere to strict privacy protocols, avoiding the sharing of personal identifiers.
Læs mere Tjek på PubMedBMC Infectious Diseases, 11.10.2024
Tilføjet 11.10.2024
Abstract Introduction Vaccination is considered as one of the most promising strategies to overcome the COVID-19 pandemic. However, it could be associated with rare but serious complications. In the present study, we aimed to review the clinical course and etiology of post COVID-19 vaccination meningitis. Methods After a systematic search in PubMed, Scopus, and Web of Sciences online databases as well as Google Scholar, documents were screened and qualified. Then data extraction was performed and the most frequent underlying agent of meningitis was found based on the reported cases. Results Overall, 35 cases of post COVID-19 vaccination meningitis from 33 articles were included in the review. Among them, 12 cases had proven viral diagnosis and 23 of them were reported to be vaccine-induced. The most frequent viral pathogen among the cases was VZV. The most prevalent symptom was headache, and the most common time of appearance symptoms was one week after vaccination. Conclusion Overall, our study suggested meningitis as a critical but not devastating complication of COVID-19 vaccination. Almost all patients responded well to common agents used to manage viral or vaccine-induced meningitis. It is recommended to monitor patients with a history of chickenpox after COVID-19 vaccination regarding the development of meningitis.
Læs mere Tjek på PubMedClinical Infectious Diseases, 10.10.2024
Tilføjet 10.10.2024
A. BoastW. ZhangH. SoeorgG. GonisA. Di CarloA. DaleyN. CurtisB. McWhinneyJ. P. J. UngererA. LeiJ. F. StandingA. Gwee1Department of General Medicine and Laboratory Services, The Royal Children’s Hospital Melbourne, Parkville, Australia2Antimicrobials and Infectious Diseases Group, Murdoch Children’s Research Institute, Melbourne, Australia3Department of Paediatrics, The University of Melbourne, Melbourne, Australia4Infection, Immunity and Inflammation, Great Ormond Street Institute of Child Health, University College London, London, United Kingdom5Department of Chemical Pathology, Pathology Queensland, Brisbane, Australia6Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Australia7Department of Pharmacy, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United KingdomAndreas H. Groll
Antimicrobial Agents And Chemotherapy, 9.10.2024
Tilføjet 9.10.2024
BMC Infectious Diseases, 9.10.2024
Tilføjet 9.10.2024
Abstract We report a case of disseminated cryptococcosis, an uncommon fungal infection predominantly affecting the lungs and central nervous system, with the rare involvement of adrenal cryptococcosis, compounded by meningitis and pneumonia. The patient, previously diagnosed with primary myelofibrosis and undergoing oral Ruxolitinib treatment, exhibited immunosuppression. Imaging via chest and abdominal CT scans revealed inflammation in the right lung’s middle lobe, splenomegaly, a splenic lesion, and a left adrenal mass, initially prompting considerations of pheochromocytoma. However, unilateral adrenalectomy and subsequent pathological examination disclosed extensive infiltration by inflammatory and multinucleate giant cells, with Periodic acid-Schiff (PAS) staining confirming the diagnosis. The identification of adrenal cryptococcosis was further supported by positive adrenal pus culture and significantly elevated capsular antigens in both serum and cerebrospinal fluid, at titers of 1:2560. Following a month of oral antifungal treatment, marked reductions in capsular antigen levels were noted, to 1:640 and 1:160 in serum and cerebrospinal fluid, respectively. The patient was discharged on a regimen of oral amphotericin B, flucytosine, and fluconazole, with regular outpatient follow-ups showing no signs of recurrence or dissemination.
Læs mere Tjek på PubMedNatalie Pach, Michael Basler
Frontiers in Immunology, 8.10.2024
Tilføjet 8.10.2024
BackgroundDefective ribosomal products (DRiPs) are non-functional proteins rapidly degraded during or after translation being an essential source for MHC class I ligands. DRiPs are characterized to derive from a substantial subset of nascent gene products that degrade more rapidly than their corresponding native retiree pool. So far, mass spectrometry analysis revealed that a large number of HLA class I peptides derive from DRiPs. However, a specific viral DRiP on protein level was not described. In this study, we aimed to characterize and identify DRiPs derived from a viral protein.MethodsUsing the nucleoprotein (NP) of the lymphocytic choriomeningitis virus (LCMV) which is conjugated N–terminally to ubiquitin, or the ubiquitin-like modifiers FAT10 or ISG15 the occurrence of DRiPs was studied. The formation and degradation of DRiPs was monitored by western blot with the help of a FLAG tag. Flow cytometry and cytotoxic T cells were used to study antigen presentation.ResultsWe identified several short lived DRiPs derived from LCMV-NP. Of note, these DRiPs could only be observed when the LCMV–NP was modified with ubiquitin or ubiquitin-like modifiers, but not in the wild type form. Using proteasome inhibitors, we could show that degradation of LCMV-NP derived DRiPs were proteasome dependent. Interestingly, the synthesis of DRiPs could be enhanced when cells were stressed with the help of FCS starvation. An enhanced NP118–126 presentation was observed when the LCMV-NP was modified with ubiquitin or ubiquitin-like modifiers, or under FCS starvation.ConclusionTaken together, we visualize for the first time DRiPs derived from a viral protein. Furthermore, DRiPs formation, and therefore MHC-I presentation, is enhanced under cellular stress conditions. Our investigations on DRiPs in MHC class I antigen presentation open up new approaches for the development of vaccination strategies.
Læs mere Tjek på PubMedClinical Infectious Diseases, 7.10.2024
Tilføjet 7.10.2024
Rodrigo Hasbun
Clinical Microbiology and Infection, 6.10.2024
Tilføjet 6.10.2024
Adjunctive steroids ameliorate the inflammatory response due to the release of cytokines reducing inpatient mortality and neurological morbidity in community-acquired bacterial meningitis, and are advocated by guidelines in patients with suspected bacterial meningitis. As the most common causes of meningitis and encephalitis are non-bacterial, adjunctive dexamethasone is given to a substantial proportion of viral meningitis patients while awaiting confirmatory testing such a polymerase chain reaction (PCR) or cultures (3).
Læs mere Tjek på PubMedLama Jaber, Corinne Levy, Naïm Ouldali, Emmanuelle Varon, Muhamed Kheir Taha, Stéphane Bonacorsi, Stéphane Béchet, François Angoulvant, Robert Cohen, Alexis Rybak, French Pediatric Meningitis Network
International Journal of Infectious Diseases, 4.10.2024
Tilføjet 4.10.2024
Acute bacterial meningitis (ABM) is a major cause of morbidity and mortality worldwide. Delayed antibiotic treatment is associated with unfavorable outcomes [1].
Læs mere Tjek på PubMedBMC Infectious Diseases, 4.10.2024
Tilføjet 4.10.2024
Abstract Background Haemophilus influenzae causes life-threatening invasive diseases such as septicaemia and meningitis. Reports on circulating H. influenzae causing invasive disease in lower-middle income settings, including Indonesia, are lacking. This study describes the serotype distributions and whole-genome sequence (WGS) data of H. influenzae isolated from hospitalized patients at Soetomo Hospital, Surabaya, Indonesia. Methods H. influenzae isolates were isolated from blood and pleural fluid specimens and identified using culture-based and molecular methods, followed by serotyping and WGS using RT‒PCR and Illumina MiSeq, respectively. Sequencing reads were assembled, and further analyses were undertaken to determine the genomic content and reconstruct the phylogeny. A second dataset consisting of publicly available H. influenzae genomes was curated to conduct phylogenetic analyses of isolates in this study in the context of globally circulating isolates. Results Ten H. influenzae isolates from hospitalized patients were collected, and septicaemia was the most common diagnosis (n=8). RT‒PCR and WGS were performed to determine whether all the isolates were nontypeable H. influenzae (NTHi). There were four newly identified STs distributed across the two main clusters. A total of 91 out of 126 virulence factor (VF)-related genes in Haemophilus sp. were detected in at least one isolate. Further evaluation incorporating a global collection of H. influenzae genomes confirmed the diverse population structure of NTHi in this study. Conclusion This study showed that all H. influenzae recovered from invasive disease patients were nonvaccine-preventable NTHi isolates. The inclusion of WGS revealed four novel STs and the possession of key VF-associated genes.
Læs mere Tjek på PubMedAmerican Journal of Tropical Medicine and Hygiene, 3.10.2024
Tilføjet 3.10.2024
Journal Name: The American Journal of Tropical Medicine and Hygiene Volume: 111 Issue: 4 Pages: 853-855
Læs mere Tjek på PubMedBMC Infectious Diseases, 3.10.2024
Tilføjet 3.10.2024
Abstract Background The severity of infectious disease outcomes is dependent on the virulence factors of the pathogen and the host immune response. CARD8 is a major regulator of the innate immune proinflammatory response and has been suggested to modulate the host response to common inflammatory diseases. In the present study, the C10X genetic polymorphism in the CARD8 gene was investigated in relation to bacterial meningitis. Methods A total of 400 clinically suspected meningitis patients hospitalized at the University of Gondar Hospital were enrolled in the study. Cerebrospinal fluid (CSF) and blood samples were collected for laboratory investigations. The collected CSF was cultured, and all the results obtained from the culture were confirmed using direct RT‒PCR. Genotyping of whole-blood samples was performed using a TaqMan assay. The results were compared with apparently healthy controls and with PCR-negative meningitis suspected patients. Results Of the included patients, 57% were men and the most common clinical signs and symptoms were fever (81%), headache (80%), neck stiffness (76%), nausea (68%), and vomiting (67%). Microbiology culture identified 7 patients with bacterial meningitis caused by Neisseria meningitidis (n = 4) and Streptococcus pneumoniae (n = 3). The RT-PCR revealed 39 positive samples for N. meningitidis (n = 10) and S. pneumoniae (n = 29). A total of 332 whole-blood samples were genotyped with the following results: 151 (45.5%) C10X heterozygotes, 59 (17.7%) C10X homozygotes and 122 (36.7%) wild genotypes. The polymorphic gene carriers among laboratory confirmed, clinically diagnosed meningitis and healthy controls were 23(46%), 246(40%), and 1526(39%), respectively with OR = 1.27 (0.7–2.3) and OR = 1.34 (0.76–2.4). The presence of the C10X polymorphism in the CARD8 gene was more prevalent in suspected meningitis patients than in healthy controls (OR 1.2; 1.00-1.5). Homozygote C10X polymorphic gene carriers were more susceptible to infectious disease. The presence of viable or active bacterial infection was found to be associated with the presence of heterozygous C10X carriers. Conclusions A greater proportion of C10X in the CARD8 gene in confirmed bacterial meningitis patients and clinically diagnosed meningitis patients than in healthy controls. Homozygote C10X polymorphic gene carriers were more susceptible to infectious disease than heterozygote gene carriers and healthy controls.
Læs mere Tjek på PubMedBMC Infectious Diseases, 2.10.2024
Tilføjet 2.10.2024
Abstract Background The severity of infectious disease outcomes is dependent on the virulence factors of the pathogen and the host immune response. CARD8 is a major regulator of the innate immune proinflammatory response and has been suggested to modulate the host response to common inflammatory diseases. In the present study, the C10X genetic polymorphism in the CARD8 gene was investigated in relation to bacterial meningitis. Methods A total of 400 clinically suspected meningitis patients hospitalized at the University of Gondar Hospital were enrolled in the study. Cerebrospinal fluid (CSF) and blood samples were collected for laboratory investigations. The collected CSF was cultured, and all the results obtained from the culture were confirmed using direct RT‒PCR. Genotyping of whole-blood samples was performed using a TaqMan assay. The results were compared with apparently healthy controls and with PCR-negative meningitis suspected patients. Results Of the included patients, 57% were men and the most common clinical signs and symptoms were fever (81%), headache (80%), neck stiffness (76%), nausea (68%), and vomiting (67%). Microbiology culture identified 7 patients with bacterial meningitis caused by Neisseria meningitidis (n = 4) and Streptococcus pneumoniae (n = 3). The RT-PCR revealed 39 positive samples for N. meningitidis (n = 10) and S. pneumoniae (n = 29). A total of 332 whole-blood samples were genotyped with the following results: 151 (45.5%) C10X heterozygotes, 59 (17.7%) C10X homozygotes and 122 (36.7%) wild genotypes. The polymorphic gene carriers among laboratory confirmed, clinically diagnosed meningitis and healthy controls were 23(46%), 246(40%), and 1526(39%), respectively with OR = 1.27 (0.7–2.3) and OR = 1.34 (0.76–2.4). The presence of the C10X polymorphism in the CARD8 gene was more prevalent in suspected meningitis patients than in healthy controls (OR 1.2; 1.00-1.5). Homozygote C10X polymorphic gene carriers were more susceptible to infectious disease. The presence of viable or active bacterial infection was found to be associated with the presence of heterozygous C10X carriers. Conclusions A greater proportion of C10X in the CARD8 gene in confirmed bacterial meningitis patients and clinically diagnosed meningitis patients than in healthy controls. Homozygote C10X polymorphic gene carriers were more susceptible to infectious disease than heterozygote gene carriers and healthy controls.
Læs mere Tjek på PubMedYannick Nkiambi Kiakuvue, Sumaya Mall, Nelesh Govender, Anne von Gottberg, Rudzani Mashau, Susan Meiring, Cheryl Cohen
PLoS One Infectious Diseases, 26.09.2024
Tilføjet 26.09.2024
by Yannick Nkiambi Kiakuvue, Sumaya Mall, Nelesh Govender, Anne von Gottberg, Rudzani Mashau, Susan Meiring, Cheryl Cohen Introduction Bacterial meningitis is a major cause of death, with an approximate case fatality rate of 37% across all age groups in South Africa. This study aimed to describe the demographic and pathogen characteristics of incident meningitis in children aged
Læs mere Tjek på PubMedBMC Infectious Diseases, 11.09.2024
Tilføjet 11.09.2024
Abstract Purpose To evaluate the diagnosis and management of bacterial meningitis in adult Sudanese patients in accordance with the Infectious Diseases Society of America (IDSA) guidelines for bacterial meningitis management. Patients and methods A cross-sectional, retrospective study design was used to recruit all patients aged > 18 years who were diagnosed with or suspected of having bacterial meningitis and admitted to Wad Medani Teaching Hospital, Gezira State, Sudan, between January 2017 and October 2022. Results In total, 201 patients were included in the analysis. The mean age of the participants was 44.1 ± 21.4 years, and 107 (53.2%) were male. Community-acquired bacterial meningitis accounted for 193 (96%) of the studied patients, and only 8 (4%) of the patients had healthcare-associated meningitis. Neuroimaging was utilized appropriately in 148 (73.6%) patients, blood cultures were not performed entirely, and lumbar puncture was seldom performed in 1 (0.5%) patient. Corticosteroids were appropriately administered to 65 (32.3%) patients, and antibiotics were administered appropriately to only 5 (2.5%) patients. Ceftriaxone 185 (76.1%) was the most frequently utilized antibiotic, followed by vancomycin 23 (9.5%). In terms of overall adherence, this study demonstrated that the IDSA guidelines were not followed at all in the treatment of patients with suspected bacterial meningitis. Conclusion The results of this study contradict the IDSA guidelines for the standard of care for bacterial meningitis. Antibiotic regimens are often incorrect, corticosteroids are administered appropriately in approximately one-third of patients, and neuroimaging is reasonably utilized. This study raises attention to several important issues regarding the diagnosis of bacterial meningitis, including the lack of confirming microbiological tests and the reliance of the diagnosis primarily on CT and clinical examination.
Læs mere Tjek på PubMedJianyong Shen, Chai Ji, Xiaofu Luo, Yu Hu
PLoS One Infectious Diseases, 9.09.2024
Tilføjet 9.09.2024
by Jianyong Shen, Chai Ji, Xiaofu Luo, Yu Hu Meningococcal vaccination in Chinese national immunization program (NIP) includes polysaccharide vaccine against Neisseria meningitidis serogroup A (MPV-A) and polysaccharide vaccine against Neisseria meningitidis serogroup A and C(MPV-AC). This study aimed to assess the cost-effectiveness of an alternative strategy using polysaccharide conjugate vaccine against Neisseria meningitidis serogroup A,C,W,Y(MCV-ACWY) and polysaccharide vaccine against Neisseria meningitidis serogroup A,C,W,Y(MPV-ACWY). From a societal perspective, we constructed a decision tree-Markov model to simulate the economic and health consequences of meningococcal disease in a 2023 birth cohort with the current meningococcal vaccination strategy and the alternative. Parameters of epidemiology, vaccine efficacy, cost, and utility were extracted from database and previous literatures. The sensitivity analysis was implemented to evaluate the robustness of the model. Compared to the current practice, the alternative strategy could avoid 513 meningococcal disease cases, 53 sequelae and 47 deaths. The ICER was estimated at $16899.81 /QALY, under the threshold of one time of the GDP per capita of Zhejiang province in 2023. The incidence of meningococcemia, the incidence of meningococcal meningitis, the case fatality of meningococcemia, the vaccine efficacy of MCV-ACWY and the price of MCV-ACWY would influence the cost-effectiveness of the meningococcal vaccination strategies. At the threshold, the probability of cost-effectiveness was 14.76% for the current strategy and 55.98% for the alternative strategy, respectively. The current meningococcal vaccination strategy had effectively prevented meningococcal disease at a low cost, but with limited serogroup coverage. Strategy using MCV-ACWY and MPV-ACWY could increase health benefits at a substantial cost at a cost-effective manner.
Læs mere Tjek på PubMedAmerican Journal of Tropical Medicine and Hygiene, 5.09.2024
Tilføjet 5.09.2024
Journal Name: The American Journal of Tropical Medicine and Hygiene Volume: 111 Issue: 3 Pages: 546-553
Læs mere Tjek på PubMedYiyun Xu Ji Wang Xiaosong Qin Jianhua Liu Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, China
Virulence, 28.08.2024
Tilføjet 28.08.2024
BMC Infectious Diseases, 27.08.2024
Tilføjet 27.08.2024
Abstract Cryptococcal infection of central nervous system commonly involves meningitis or meningoencephalitis, but rarely mimics inflammatory myelitis. We present short segment myelitis as a dominant manifestation caused by Cryptococcus neoformans in a patient with nephrotic syndrome under immunosuppressive therapy. This case report highlights Cryptococcus neoformans as a potential etiological factor for short segment myelitis in immunocompromised hosts.
Læs mere Tjek på PubMedPelle Trier Petersen, Jacob Bodilsen, Micha Phill Grønholm Jepsen, Lykke Larsen, Merete Storgaard, Birgitte Rønde Hansen, Jannik Helweg-Larsen, Lothar Wiese, Hans Rudolf Lüttichau, Christian Østergaard Andersen, Henrik Nielsen, Christian Thomas Brandt, the Danish Study Group of Infections of the Brain (DASGIB)
Clinical Microbiology and Infection, 23.08.2024
Tilføjet 23.08.2024
To investigate whether there is a dose-dependent association between empiric dexamethasone and outcome in viral meningitis.
Læs mere Tjek på PubMedMuttalib, F., Memon, Z. A., Muhammad, S., Soomro, A., Khan, S., Bano, S., Jawwad, M., Soofi, S., Hansen, B., Adhikari, N. K., Bhutta, Z.
BMJ Open, 23.08.2024
Tilføjet 23.08.2024
ObjectiveTo describe presenting diagnoses and rates and causes of death by age category and sex among children with acute illness brought to a district headquarter hospital in Pakistan. DesignProspective cohort study. SettingSanghar district headquarter hospital, Sindh, Pakistan between December 2019 and April 2020 and August 2020 and December 2020. Participants3850 children 0–14 years presenting with acute illness to the emergency and outpatient departments and 1286 children admitted to the inpatient department. Outcome measuresThe primary outcome was Global Burden of Disease diagnosis category. Secondary outcomes were 28-day mortality rate, cause of death and healthcare delays, defined as delay in care-seeking, delay in reaching the healthcare facility and delay in appropriate treatment. ResultsCommunicable diseases were the most common presenting diagnoses among outpatients and among inpatients aged 1 month to 9 years. Non-communicable diseases and nutritional disorders were more common with increasing age. Few children presented with injuries. Newborn period (age
Læs mere Tjek på PubMedJournal of Infectious Diseases, 20.08.2024
Tilføjet 20.08.2024
Abstract Cryptococcus neoformans, Cryptococcus gattii and Candida albicans are opportunistic fungal pathogens associated with infections in immunocompromised hosts. Cryptococcal meningitis (CM) is the leading fungal cause of HIV-related deaths globally, with the majority occurring in Africa. The human immune response to C. albicans infection has been studied extensively in large genomics studies whereas cryptococcal infections, despite their severity, are comparatively understudied. Here we investigated the transcriptional response of immune cells after in vitro stimulation with in vitro C. neoformans, C. gattii and C. albicans infection of peripheral blood mononuclear cells (PBMCs) collected from healthy South African volunteers. We found a lower transcriptional response to cryptococcal stimuli compared to C. albicans and unique expression signatures from all three fungal stimuli. This work provides a starting point for further studies comparing the transcriptional signature of CM in immunocompromised patients, with the goal of identifying biomarkers of disease severity and possible novel treatment targets.
Læs mere Tjek på PubMedClinical Infectious Diseases, 15.08.2024
Tilføjet 15.08.2024
Abstract Background In mid-2018, the Australian childhood 13-valent pneumococcal conjugate vaccine schedule changed from 3+0 to 2+1, moving the third dose to 12 months of age, to address increasing breakthrough cases of invasive pneumococcal disease (IPD), predominantly in children aged >12 months. This study assessed the impact of this change using national IPD surveillance data.Methods Pre- and postschedule change 3-dose 13-valent pneumococcal conjugate vaccine breakthrough cases were compared by age group, serotype, and clinical syndrome. Annual rates of breakthrough cases were calculated (per 100 000) using respective birth cohort sizes and 3-dose vaccine coverage. Using time-series modelling, observed IPD rates in children aged 12 months was 2.8 per 100 000 (n = 557; 11 birth cohorts). Serotype 3 replaced 19A as predominant breakthrough serotype (respectively, 24% and 65% in 2013 to 60% and 20% in 2022) followed by 19F. In breakthrough cases, the most frequent clinical phenotype was bacteremic pneumonia (69%), with meningitis accounting for 3%–4%. In cohorts eligible for 2+1 versus 3+0 schedules, rate of breakthrough cases was lower for all vaccine serotypes, except type 3 (incidence rate ratio, 0.50 [95% confidence interval, .28–.84] and 1.12 [0.71–1.76], respectively). Observed compared to expected IPD was 51.7% lower (95% confidence interval, −60.9 to −40.7%) for vaccine serotypes, but the change for nonvaccine types was not significant 12% (−9.6 to 39.7).Interpretations The 2+1 schedule is likely superior to 3+0 for overall IPD control, a finding that may be worth consideration for other countries considering or using 3+0 PCV schedules.
Læs mere Tjek på PubMedMusa Mohammed Ali
PLoS One Infectious Diseases, 10.08.2024
Tilføjet 10.08.2024
by Musa Mohammed Ali Background Meningitis poses a significant challenge to public health in low-income nations, such as Ethiopia, with a particular impact on newborns. The magnitude and etiologies of meningitis vary based on geographic location and age of patients. There is limited data regarding the magnitude and etiology of meningitis from Sidama Regional State, Ethiopia. This study aimed to determine the magnitude and bacterial profile of meningitis among newborns aged less than 90 days at Hawassa University Comprehensive Specialized Hospital (HUCSH). Methods A retrospective cross-sectional study was conducted among newborns under 90 days who were suspected of meningitis at HUCSH from January 2019 to July 2023, and for whom Cerebrospinal fluid (CSF) culture was performed. At HUCSH, bacteria are isolated and identified using standard microbiological techniques. Socio-demographic characteristics and culture results were extracted from the laboratory register. Data were entered into Excel and exported it to SPSS version 20 for analysis. Results Overall 1061 newborns suspected of meningitis were included in the study. Among the participants, 767 individuals (72.3%) fell within the age range of 8 to 90 days. Of the total participants, 437 (41.2%) were females. The magnitude of culture-confirmed meningitis was 90(8.5%) 95% CI: 6.8%−10.1%. The magnitude of culture-confirmed meningitis among newborns aged 0−7 days and 8−90 days were 1.6% and 6.9% respectively. The proportion of bacteria among newborns aged 0−7 days and 8−90 days were 18.9% and 81.1% respectively. Coagulase-negative Staphylococci (CONS) were the most common bacteria (n = 26; 28.9%) recovered followed by Acinetobacter species (n = 12, 13.3%), Escherichia coli (n = 9; 10%), and Klebsiella pneumoniae (n = 7; 7.8%). K. pneumoniae was the predominant bacteria among newborns within the age group of 0 to 7 days while Acinetobacter species was the most common among newborns within the 8 to 90 days age group. The prevalence of culture-confirmed neonatal meningitis was found to be greater in male newborns (x2 = 1.74, p = 0.18), newborns aged between 8 to 90 days (x2 = 0.07, p = 3.4), and newborns admitted in 2022 (x2 = 2.4, p = 0.66), Conclusions In this study, the overall magnitude of culture-confirmed meningitis was relatively high. Culture-confirmed meningitis was high in newborns within the age range of 8 to 90 days. The most common bacteria were CONS in both age groups followed by Acinetobacter species, E. coli, and K. pneumoniae.
Læs mere Tjek på PubMedGroeneveld, N. S., Bijlsma, M. W., van Zeggeren, I. E., Staal, S. L., Tanck, M. W. T., van de Beek, D., Brouwer, M. C.
BMJ Open, 8.08.2024
Tilføjet 8.08.2024
ObjectivesDiagnostic prediction models exist to assess the probability of bacterial meningitis (BM) in paediatric patients with suspected meningitis. To evaluate the diagnostic accuracy of these models in a broad population of children suspected of a central nervous system (CNS) infection, we performed external validation. MethodsWe performed a systematic literature review in Medline to identify articles on the development, refinement or validation of a prediction model for BM, and validated these models in a prospective cohort of children aged 0–18 years old suspected of a CNS infection. Primary and secondary outcome measuresWe calculated sensitivity, specificity, predictive values, the area under the receiver operating characteristic curve (AUC) and evaluated calibration of the models for diagnosis of BM. ResultsIn total, 23 prediction models were validated in a cohort of 450 patients suspected of a CNS infection included between 2012 and 2015. In 75 patients (17%), the final diagnosis was a CNS infection including 30 with BM (7%). AUCs ranged from 0.69 to 0.94 (median 0.83, interquartile range [IQR] 0.79–0.87) overall, from 0.74 to 0.96 (median 0.89, IQR 0.82–0.92) in children aged ≥28 days and from 0.58 to 0.91 (median 0.79, IQR 0.75–0.82) in neonates. ConclusionsPrediction models show good to excellent test characteristics for excluding BM in children and can be of help in the diagnostic workup of paediatric patients with a suspected CNS infection, but cannot replace a thorough history, physical examination and ancillary testing.
Læs mere Tjek på PubMedAmerican Journal of Tropical Medicine and Hygiene, 8.08.2024
Tilføjet 8.08.2024
Journal Name: The American Journal of Tropical Medicine and Hygiene Volume: 111 Issue: 2 Pages: 251-258
Læs mere Tjek på PubMedBMC Infectious Diseases, 7.08.2024
Tilføjet 7.08.2024
Abstract Introduction Intracranial fungal infections’ (IcFIs) varying clinical manifestations lead to difficulties in diagnosis and treatment. African populations are disproportionately affected by the high burden of the disease. There is a lack of clarity as to the diagnostic and treatment modalities employed across the continent. In this review, we aim to detail the management, and outcome of IcFIs across Africa. Methods This scoping review was conducted using the Arksey and O\'Malley framework. MEDLINE, EMBASE, Cochrane Library, African Index Medicus, and African Journals Online were searched for relevant articles from database inception to August 10th, 2021. The Preferred Reporting Items for Systematic Review and Meta-Analysis extension for Scoping Reviews guidelines were used to report the findings of the review. Results Of the 5,779 records identified, 131 articles were included. The mean age was 35.6 years, and the majority (56.4%) were males. The majority (n = 8,433/8,693, 97.0%) of IcFIs presented as a meningitis, the most common communicable predisposing factor of IcFIs was HIV/AIDS (n = 7,815/8,693, 89.9%), and the most common non-communicable risk factor was diabetes mellitus (n = 32/8,693, 0.4%). Cryptococcus species was the most common (n = 8,428/8,693, 97.0%) causative organism. The most commonly used diagnostic modality was cerebrospinal (CSF) cultures (n = 4,390/6,830, 64.3%) for diffuse IcFIs, and MRI imaging (n = 12/30, 40%) for focal IcFIs. The most common treatment modality was medical management with antifungals only (n = 4,481/8,693, 51.6%). The most commonly used antifungal agent in paediatric, and adult patients was amphotericin B and fluconazole dual therapy (51.5% vs 44.9%). The overall mortality rate was high (n = 3,475/7,493, 46.3%), and similar for both adult and paediatric patients (47.8% vs 42.1%). Conclusion Most IcFIs occurred in immunosuppressed individuals, and despite the new diagnostic techniques, CSF culture was mostly used in Africa. Antifungals regimens used was similar between children and adults. The outcome of IcFIs in Africa was poor for both paediatric and adult patients.
Læs mere Tjek på PubMedClinical Infectious Diseases, 25.07.2024
Tilføjet 25.07.2024
Abstract Background Cryptococcal meningitis is a leading cause of AIDS-related mortality. Cryptococcal antigen (CrAg) predicts the development of meningitis. Historically, despite standard- of-care fluconazole, 25%–30% of asymptomatic CrAg-positive persons develop breakthrough meningitis or death. We evaluated whether adding single high-dose liposomal amphotericin B to standard pre-emptive fluconazole therapy could improve meningitis-free survival.Methods Participants with human immunodeficiency virus (HIV) and asymptomatic cryptococcal antigenemia in Uganda were randomized to liposomal amphotericin B (10 mg/kg once) with fluconazole or fluconazole alone through 24 weeks. We compared 24-week, meningitis-free survival time between treatment groups. After the second interim review, the Data Safety and Monitoring Board recommended no further enrollment of participants with low plasma CrAg lateral flow assay titers (≤1:80) due to futility. Herein, we present the results of participants with low plasma CrAg titers.Results 168 participants enrolled into the ACACIA trial had low plasma CrAg titers (≤1:80). During 24 weeks of follow-up, meningitis or death occurred in 14.5% (12/83) of participants randomized to liposomal amphotericin B with fluconazole versus 10.6% (9/85) assigned to fluconazole alone (hazard ratio, 1.42; 95% CI, .60–3.36; P = .431). Adverse events were more frequent in participants assigned to the intervention versus standard-of-care (28% vs 12%; P = .011).Conclusions Among CrAg-positive persons with low titers (≤1:80), the addition of single-dose liposomal amphotericin B to fluconazole as pre-emptive therapy provided no additional clinical benefit. This trial provides supportive evidence that, in asymptomatic populations with low plasma CrAg titers, lumbar punctures are likely unnecessary as administration of meningitis treatment did not improve outcomes.Clinical Trials Registration Clinicaltrials.gov (NCT03945448).
Læs mere Tjek på PubMedSean WassermanRosleine Antilus-SainteNoha AbdelgawadNarineh M. OdjourianMelissa CristaldoMaureen DougherFirat KayaMatthew ZimmermanPaolo DentiMartin Gengenbacher1Institute for Infection and Immunity, St. George’s, University of London, London, United Kingdom2Center for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa3Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, New Jersey, USA4Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa5Hackensack Meridian School of Medicine, Nutley, New Jersey, USAJared A. Silverman
Antimicrobial Agents And Chemotherapy, 20.07.2024
Tilføjet 20.07.2024
Journal of Infectious Diseases, 14.07.2024
Tilføjet 14.07.2024
Abstract Follow-up of previously healthy patients surviving cryptococcal meningitis found that cryptococcal antigen could be detected for more than one year in serum from 38 of 44 (86%) patients and in CSF from 20 of 31 patients (67%), far beyond the time of culture conversion. The speed of titer decline, measured as the number of days for a two fold drop in titer to occur, was slower in serum than in CSF. Speed of decline of antigen titers was much slower in serum and CSF for patients infected with C. gattii than C. neoformans. The speed of decline in CSF and serum titers was also much slower in patients who had received a ventriculoperitoneal shunt for increased intracranial pressure. The variable and extraordinarily slow rate of clearance in our patients did not appear to reflect differences in disease control but rather differences in species and shunting for increased intracranial pressure.
Læs mere Tjek på PubMed