1
|
T AM, Singh B, Rupali P. Central nervous system infections in the tropics. Curr Opin Infect Dis 2024; 37:201-210. [PMID: 38529912 DOI: 10.1097/qco.0000000000001015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
PURPOSE OF REVIEW Emerging and re-emerging central nervous system (CNS) infections are a major public health concern in the tropics. The reasons for this are myriad; climate change, rainfall, deforestation, increased vector density combined with poverty, poor sanitation and hygiene. This review focuses on pathogens, which have emerged and re-emerged, with the potential for significant morbidity and mortality. RECENT FINDINGS In recent years, multiple acute encephalitis outbreaks have been caused by Nipah virus, which carries a high case fatality. Arboviral infections, predominantly dengue, chikungunya and Zika are re-emerging increasingly especially in urban areas due to changing human habitats, vector behaviour and viral evolution. Scrub typhus, another vector borne disease caused by the bacterium Orientia tsutsugamushi , is being established as a leading cause of CNS infections in the tropics. SUMMARY A syndromic and epidemiological approach to CNS infections in the tropics is essential to plan appropriate diagnostic tests and management. Rapid diagnostic tests facilitate early diagnosis and thus help prompt initiation and focusing of therapy to prevent adverse outcomes. Vector control, cautious urbanization and deforestation, and reducing disturbance of ecosystems can help prevent spread of vector-borne diseases. Regional diagnostic and treatment approaches and specific vaccines are required to avert morbidity and mortality.
Collapse
Affiliation(s)
| | - Bhagteshwar Singh
- Tropical and Infectious Diseases Unit, Royal Liverpool University Hospital, Liverpool, United Kingdom; Institute of Infection Veterinary & Ecological Sciences, University of Liverpool, Liverpool, United Kingdom; Department of Infectious Diseases
| | - Priscilla Rupali
- Department of Infectious Diseases, Christian Medical College, Vellore, India
| |
Collapse
|
2
|
Comeau D, Spinato MT, Ojkic D, Foster RA, Caswell JL. Bovine astrovirus and its role in lymphocytic encephalitis in cattle in Ontario, Canada, 1988-2019. J Vet Diagn Invest 2024; 36:447-456. [PMID: 38500024 PMCID: PMC11110778 DOI: 10.1177/10406387241237192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024] Open
Abstract
Astroviruses have been found in cattle and other species with encephalitis. Our objective was to determine the frequency of neurotropic bovine astrovirus (BoAstV) in cases of encephalitis in cattle ≥ 4-mo-old. Of 56 cases of idiopathic lymphocytic encephalitis examined retrospectively (1988-2019), fixed brain from 11 cases (19%) tested positive by semi-quantitative RT-PCR for BoAstV CH13/NeuroS1. None of the control cases tested positive, including 32 with other forms of encephalitis and 40 with no neurologic disease. Most astrovirus-positive cases were 1-2-y-old, with a range of 7 mo to 7 y, and affected both beef and dairy breeds with wide geographic distribution. BoAstV-positive cases had acute onset of neurologic signs of 12 h to 7 d before death or euthanasia. Affected cattle had lymphocytic inflammation throughout the brain including cerebrum, thalamus, midbrain, cerebellum, medulla oblongata, and spinal cord, and affecting gray and white matter. Further PCR testing identified a possible cause in 9 of the 45 (20%) remaining idiopathic cases of lymphocytic encephalitis, including eastern equine encephalitis virus, Listeria monocytogenes, bovine viral diarrhea virus, bovine alphaherpesvirus 1, and ovine gammaherpesvirus 2 (malignant catarrhal fever); we found no cases of infection by West Nile virus, rabies virus, or Chlamydia spp. No cause was identified in 36 of 56 (64%) cases of lymphocytic encephalitis. We frequently identified neurotropic BoAstV in cases of lymphocytic encephalitis that had no previously identified cause. Neurotropic BoAstV infections had gone undetected for decades, but the frequency of BoAstV infections has not increased among contemporary cases.
Collapse
Affiliation(s)
- Dominique Comeau
- Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada
- Animal Health Laboratory, University of Guelph, Guelph, Ontario, Canada
| | - Maria T. Spinato
- Animal Health Laboratory, University of Guelph, Guelph, Ontario, Canada
| | - Davor Ojkic
- Animal Health Laboratory, University of Guelph, Guelph, Ontario, Canada
| | - Robert A. Foster
- Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada
| | - Jeff L. Caswell
- Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada
| |
Collapse
|
3
|
Yu Y, Zhuo B, Xu W, Li L, Jin X, Ji Y, Ge Y. Diagnosis of an immunocompetent adult with acute headache and fever as Epstein-Barr virus encephalitis by mNGS of cerebrospinal fluid. Diagn Microbiol Infect Dis 2024; 109:116213. [PMID: 38359677 DOI: 10.1016/j.diagmicrobio.2024.116213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/31/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
Complicated case with fever or headache of unknown origin is currently one of the main challenges in clinical diagnosis. A retrospective analysis was conducted on a 27-year-old female patient hospitalized with headache and fever, and the pathogen species were ultimately determined by metagenomic next-generation sequencing (mNGS) of cerebrospinal fluid (CSF). The culture results of CSF showed no bacterial or fungal growth. CSF cytology showed a significant increase in nucleated cells. Pathogenic index (corresponded to human gamma herpesvirus 4) of the microorganism after correcting for human background was 12846.77 with a host index (human resource) of 27822.48 by mNGS of CSF. The patient improved through antiviral treatment with ganciclovir. Epstein-Barr virus encephalitis is rare in immunocompetent adults, which can easily cause misdiagnosis and should be paid attention to. mNGS of CSF has significant advantages in the diagnosis of Epstein-Barr virus encephalitis.
Collapse
Affiliation(s)
- Yan Yu
- Center for Rehabilitation Medicine, Department of Ophthalmology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Bingqian Zhuo
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Wei Xu
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Lanhui Li
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Xinyue Jin
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Youqi Ji
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China
| | - Yumei Ge
- Center for Rehabilitation Medicine, Department of Ophthalmology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China; School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, China; Key Laboratory of Precision Medicine for Head and Neck Cancers of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China.
| |
Collapse
|
4
|
Huff HV, Wilson-Murphy M. Neuroinfectious Diseases in Children: Pathophysiology, Outcomes, and Global Challenges. Pediatr Neurol 2024; 151:53-64. [PMID: 38103523 DOI: 10.1016/j.pediatrneurol.2023.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 08/22/2023] [Accepted: 09/24/2023] [Indexed: 12/19/2023]
Abstract
Pathogens with affinity for the central nervous system (CNS) in children are diverse in their mechanisms of infecting and attacking the brain. Infections can reach the CNS via hematogenous routes, transneurally thereby avoiding the blood-brain barrier, and across mucosal or skin surfaces. Once transmission occurs, pathogens can wreak havoc both by direct action on host cells and via an intricate interplay between the protective and pathologic actions of the host's immune system. Pathogen prevalence varies depending on region, and susceptibility differs based on epidemiologic factors such as age, immune status, and genetics. In addition, some infectious diseases are monophasic, whereas others may lie dormant for years, thereby causing a dynamic effect on outcomes. Outcomes in survivors are highly variable for each particular pathogen and depend on the vaccination and immune status of the patient as well as the speed by which the patient receives evidence-based treatments. Given pathogens cause communicable diseases that can cause morbidity and mortality on a population level when spread, the burden is often the greatest and the outcomes the worst in low-resource settings. Here we will focus on the most common infections with a propensity to affect a child's brain, the pathologic mechanisms by which they do so, and what is known about the developmental outcomes in children who are affected by these infections.
Collapse
Affiliation(s)
- Hanalise V Huff
- Department of Neurology, National Institutes of Health, Bethesda, Maryland
| | | |
Collapse
|
5
|
Ter Horst L, van Zeggeren IE, Olie SE, van de Beek D, Brouwer MC. Predictors of unfavourable outcome in adults with suspected central nervous system infections: a prospective cohort study. Sci Rep 2023; 13:21250. [PMID: 38040800 PMCID: PMC10692224 DOI: 10.1038/s41598-023-48472-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/27/2023] [Indexed: 12/03/2023] Open
Abstract
Suspected central nervous system (CNS) infections may pose a diagnostic challenge, and often concern severely ill patients. We aim to identify predictors of unfavourable outcome to prioritize diagnostics and treatment improvements. Unfavourable outcome was assessed on the Glasgow Outcome Scale at hospital discharge, defined by a score of 1 to 4. Of the 1152 episodes with suspected CNS infection, from two Dutch prospective cohorts, the median age was 54 (IQR 37-67), and 563 episodes (49%) occurred in women. The final diagnoses were categorized as CNS infection (N = 358 episodes, 31%), CNS inflammatory disease (N = 113, 10%), non-infectious non-inflammatory neurological disorder (N = 388, 34%), non-neurological infection (N = 252, 22%), and other systemic disorder (N = 41, 4%). Unfavourable outcome occurred in 412 of 1152 (36%), and 99 died (9%). Predictors for unfavourable outcomes included advanced age, absence of headache, tachycardia, altered mental state, focal cerebral deficits, cranial nerve palsies, low thrombocytes, high CSF protein, and the final diagnosis of CNS inflammatory disease (odds ratio 4.5 [95% confidence interval 1.5-12.6]). Episodes suspected of having a CNS infection face high risk of experiencing unfavourable outcome, stressing the urgent need for rapid and accurate diagnostics. Amongst the suspected CNS infection group, those diagnosed with CNS inflammatory disease have the highest risk.
Collapse
Affiliation(s)
- Liora Ter Horst
- Amsterdam UMC, Department of Neurology, Amsterdam Neuroscience, University of Amsterdam, Meibergdreef 9, PO Box 22660, 1105 AZ, Amsterdam, The Netherlands
| | - Ingeborg E van Zeggeren
- Amsterdam UMC, Department of Neurology, Amsterdam Neuroscience, University of Amsterdam, Meibergdreef 9, PO Box 22660, 1105 AZ, Amsterdam, The Netherlands
| | - Sabine E Olie
- Amsterdam UMC, Department of Neurology, Amsterdam Neuroscience, University of Amsterdam, Meibergdreef 9, PO Box 22660, 1105 AZ, Amsterdam, The Netherlands
| | - Diederik van de Beek
- Amsterdam UMC, Department of Neurology, Amsterdam Neuroscience, University of Amsterdam, Meibergdreef 9, PO Box 22660, 1105 AZ, Amsterdam, The Netherlands
| | - Matthijs C Brouwer
- Amsterdam UMC, Department of Neurology, Amsterdam Neuroscience, University of Amsterdam, Meibergdreef 9, PO Box 22660, 1105 AZ, Amsterdam, The Netherlands.
| |
Collapse
|
6
|
Granerod J, Huang Y, Davies NWS, Sequeira PC, Mwapasa V, Rupali P, Michael BD, Solomon T, Easton A. Global Landscape of Encephalitis: Key Priorities to Reduce Future Disease Burden. Clin Infect Dis 2023; 77:1552-1560. [PMID: 37436770 PMCID: PMC10686956 DOI: 10.1093/cid/ciad417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/28/2023] [Accepted: 07/10/2023] [Indexed: 07/13/2023] Open
Abstract
Encephalitis affects people across the lifespan, has high rates of mortality and morbidity, and results in significant neurological sequelae with long-term consequences to quality of life and wider society. The true incidence is currently unknown due to inaccurate reporting systems. The disease burden of encephalitis is unequally distributed across the globe being highest in low- and middle-income countries where resources are limited. Here countries often lack diagnostic testing, with poor access to essential treatments and neurological services, and limited surveillance and vaccination programs. Many types of encephalitis are vaccine preventable, whereas others are treatable with early diagnosis and appropriate management. In this viewpoint, we provide a narrative review of key aspects of diagnosis, surveillance, treatment, and prevention of encephalitis and highlight priorities for public health, clinical management, and research, to reduce the disease burden.
Collapse
Affiliation(s)
- Julia Granerod
- Department of Clinical Infection Microbiology and Immunology, Institute of Infection, Veterinary, and Ecological Science, University of Liverpool, Liverpool, United Kingdom
- Dr JGW Consulting Ltd., London, United Kingdom
| | - Yun Huang
- Department of Clinical Infection Microbiology and Immunology, Institute of Infection, Veterinary, and Ecological Science, University of Liverpool, Liverpool, United Kingdom
- National Institute for Health and Care Research (NIHR) Health Protection Research Unit for Emerging and Zoonotic Infection, Liverpool, United Kingdom
- Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
| | | | | | - Victor Mwapasa
- University of Malawi, College of Medicine, Blantyre, Malawi
| | - Priscilla Rupali
- Department of Infectious Diseases, Christian Medical College Vellore, Vellore, Tamil Nadu, India
| | - Benedict D Michael
- Department of Clinical Infection Microbiology and Immunology, Institute of Infection, Veterinary, and Ecological Science, University of Liverpool, Liverpool, United Kingdom
- National Institute for Health and Care Research (NIHR) Health Protection Research Unit for Emerging and Zoonotic Infection, Liverpool, United Kingdom
- Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - Tom Solomon
- Department of Clinical Infection Microbiology and Immunology, Institute of Infection, Veterinary, and Ecological Science, University of Liverpool, Liverpool, United Kingdom
- National Institute for Health and Care Research (NIHR) Health Protection Research Unit for Emerging and Zoonotic Infection, Liverpool, United Kingdom
- Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
- The Pandemic Institute, Liverpool, United Kingdom
| | - Ava Easton
- Department of Clinical Infection Microbiology and Immunology, Institute of Infection, Veterinary, and Ecological Science, University of Liverpool, Liverpool, United Kingdom
- The Encephalitis Society, Malton, United Kingdom
| |
Collapse
|
7
|
Perlejewski K, Radkowski M, Pawełczyk A, Rydzanicz M, Dzieciątkowski T, Makowiecki M, Paciorek M, Welc-Falęciak R, Horban A, Laskus T. Enteroviral central nervous system infections in patients with Lyme neuroborreliosis. Ticks Tick Borne Dis 2023; 14:102253. [PMID: 37729847 DOI: 10.1016/j.ttbdis.2023.102253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/21/2023] [Accepted: 09/10/2023] [Indexed: 09/22/2023]
Abstract
Patients with Lyme neuroborreliosis (LNB) are rarely tested for the presence of neurovirulent viruses other than tick-borne encephalitis virus (TBEV); however, such coinfections could be of clinical importance. The aim of the study was to search for the presence of neurotropic viruses in a LNB patients. Fourteen patients admitted with signs and symptoms of neuroinfection who were eventually diagnosed to have LNB (according to the guidelines of the European Federation of Neurological Societies) were subjects of the study. Sera and cerebrospinal fluid (CSF) collected at the time of initial presentation were tested for viral pathogens most common in our geographical area: human enteroviruses (EV), herpes simplex virus type 1 and 2, varicella-zoster virus, Epstein-Barr virus, cytomegalovirus, human herpesvirus type 6, human adenoviruses, and TBEV using PCR/RT-PCR and serological assays. RNA and DNA-based metagenomic next-generation sequencing (mNGS) was used to detect other viral pathogens. EV was detected in CSF from two (14 %) LNB patients and viral loads were similar (220 and 270 copies/ml). The mMGS analysis were performed on CSFs from 10 patients and generated a total 213,750,885 NGS reads, 0.05 % of which were viral. However, none of potential pathogens fulfilled the criteria for positive viral detection by mNGS. Using a number of PCR/RT-PCR assays and mNGS we identified EV infection in two out of 14 LNB patients. The possible co-occurrence of enterovirus and Lyme neuroborreliosis infections may warrant further research.
Collapse
Affiliation(s)
- Karol Perlejewski
- Department of Immunopathology of Infectious and Parasitic Diseases, Medical University of Warsaw, Pawińskiego 3c, Warsaw 02-106, Poland.
| | - Marek Radkowski
- Department of Immunopathology of Infectious and Parasitic Diseases, Medical University of Warsaw, Pawińskiego 3c, Warsaw 02-106, Poland
| | - Agnieszka Pawełczyk
- Department of Immunopathology of Infectious and Parasitic Diseases, Medical University of Warsaw, Pawińskiego 3c, Warsaw 02-106, Poland
| | - Małgorzata Rydzanicz
- Department of the Medical Genetics, Medical University of Warsaw, Pawińskiego 3c, Warsaw 02-106, Poland
| | - Tomasz Dzieciątkowski
- Department of Microbiology, Medical University of Warsaw, Chalubińskiego 5, Warsaw 02-004, Poland
| | - Michał Makowiecki
- Department of Adults Infectious Diseases, Medical University of Warsaw, Wolska 37, Warsaw 01-201, Poland
| | - Marcin Paciorek
- Department of Adults Infectious Diseases, Medical University of Warsaw, Wolska 37, Warsaw 01-201, Poland
| | - Renata Welc-Falęciak
- Department of Parasitology, Faculty of Biology, University of Warsaw, Miecznikowa 1, Warsaw 02-096, Poland
| | - Andrzej Horban
- Department of Adults Infectious Diseases, Medical University of Warsaw, Wolska 37, Warsaw 01-201, Poland
| | - Tomasz Laskus
- Department of Adults Infectious Diseases, Medical University of Warsaw, Wolska 37, Warsaw 01-201, Poland
| |
Collapse
|
8
|
Pankovics P, Nagy A, Nyul Z, Juhász A, Takáts K, Boros Á, Reuter G. Human cases of lymphocytic choriomeningitis virus (LCMV) infections in Hungary. Arch Virol 2023; 168:275. [PMID: 37853289 PMCID: PMC10584706 DOI: 10.1007/s00705-023-05905-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/07/2023] [Indexed: 10/20/2023]
Abstract
Lymphocytic choriomeningitis (LCM) is a "neglected" rodent-borne viral zoonotic disease caused by lymphocytic choriomeningitis virus (LCMV) (family Arenaviridae). The aim of this retrospective clinical and laboratory study was to detect LCMV RNA, using RT-PCR, in cerebrospinal fluid samples collected from patients with central nervous system (CNS) infections of unknown aetiology from over a 12-year period in Hungary. Between 2009 and 2020, a total of 74 cerebrospinal fluid samples were tested using an in-house LCMV-specific RT-PCR-based method at the Department of Medical Microbiology and Immunology, University of Pécs. The mean age of the 74 patients included in our study was 24 years (min. 5, max. 74), with a predominance of men (44 [59.5%]; women, 30 [40.5%]). Two (2.7%) cerebrospinal fluid samples were found to be positive for LCMV RNA by RT-PCR and sequencing. The first LCMV case was a 5-year-old preschool boy who had a hamster bite on his left-hand finger, and the second LCMV case was a 74-year-old man who was living in a village and had incipient dementia and a previous permanent functional CNS impairment. The two detected LCMV strains (MW558451 and OM648933) from the year 2020 belonged to two different genetic lineages (I and II). These two cases of CNS inflammation of unknown origin represent the first published human LCMV infections confirmed by molecular methods in Hungary.
Collapse
Affiliation(s)
- Péter Pankovics
- Department of Medical Microbiology and Immunology Medical School, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary.
| | - Arnold Nagy
- Department of Paediatrics, Medical School, Medical School, University of Pécs, Pécs, Hungary
| | - Zoltán Nyul
- Department of Paediatrics, Medical School, Medical School, University of Pécs, Pécs, Hungary
| | - Annamária Juhász
- Department of Neurology, Medical School, University of Pécs, Pécs, Hungary
| | - Károly Takáts
- Department of Medical Microbiology and Immunology Medical School, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary
| | - Ákos Boros
- Department of Medical Microbiology and Immunology Medical School, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary
| | - Gábor Reuter
- Department of Medical Microbiology and Immunology Medical School, University of Pécs, Szigeti út 12, Pécs, H-7624, Hungary
| |
Collapse
|
9
|
Bakal JA, Rivera R, Charlton C, Plitt S, Power C. Evolving etiologies, comorbidities, survival, and costs of care in adult encephalitis. J Neurovirol 2023; 29:605-613. [PMID: 37581843 DOI: 10.1007/s13365-023-01165-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/10/2023] [Accepted: 07/27/2023] [Indexed: 08/16/2023]
Abstract
Encephalitis is a central nervous system disorder, often caused by infectious agents or aberrant immune responses. We investigated causes, comorbidities, costs, and outcomes of encephalitis in a population-based cohort. ICD-10 codes corresponding to encephalitis were used to identify health services records for all adults from 2004 to 2019. Data were cross-validated for identified diagnoses based on laboratory confirmation using univariate and multivariate statistical analyses. We identified persons with a diagnosis of encephalitis and abnormal cerebrospinal fluid (CSF) results (n = 581) in whom viral genome was detected (n = 315) in a population of 3.2 million adults from 2004 to 2019. Viral genome-positive CSF samples included HSV-1 (n = 133), VZV (n = 116), HSV-2 (n = 34), enterovirus (n = 4), EBV (n = 5), and CMV (n = 3) with the remaining viruses included JCV (n = 12) and HHV-6 (n = 1). The mean Charlson Comorbidity Index (2.0) and mortality rate (37.6%) were significantly higher in the CSF viral genome-negative encephalitis group although the mean costs of care were significantly higher for the CSF viral genome-positive group. Cumulative incidence rates showed increased CSF VZV detection in persons with encephalitis, which predominated in persons over 65 years with a higher mean Charlson index. We detected HSV-2 and VZV more frequently in CSF from encephalitis cases with greater material-social deprivation. The mean costs of care were significantly greater for HSV-1 encephalitis group. Encephalitis remains an important cause of neurological disability and death with a viral etiology in 54.2% of affected adults accompanied by substantial costs of care and mortality. Virus-associated encephalitis is evolving with increased VZV detection, especially in older persons.
Collapse
Affiliation(s)
- J A Bakal
- Provincial Research Data Services-Alberta Health Services, Edmonton, AB, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
| | - R Rivera
- School of Public Health, University of Alberta, Edmonton, AB, Canada
| | - C Charlton
- Public Health Laboratory, Alberta Precision Laboratories, Edmonton, AB, Canada
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
- Li Ka Shing Institute of Virology, Edmonton, AB, Canada
| | - S Plitt
- Public Health Laboratory, Alberta Precision Laboratories, Edmonton, AB, Canada
| | - C Power
- Division of Neurology, Department of Medicine, Medical Research Centre, University of Alberta, 6-11 Heritage, Edmonton, AB, Canada.
- Department of Microbiology, Immunology & Infectious Diseases, University of Calgary, Calgary, AB, Canada.
| |
Collapse
|
10
|
Etter EJ, Trivitt SJ, Bosse BL, McWilliams A. Abnormal Presentation of Bartonella henselae Encephalopathy in a Pediatric Patient. Cureus 2023; 15:e43535. [PMID: 37719525 PMCID: PMC10500953 DOI: 10.7759/cureus.43535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2023] [Indexed: 09/19/2023] Open
Abstract
Cat scratch disease (CSD) is a zoonotic infection caused by the transmission of gram-negative bacteria Bartonella henselae through a scratch or bite of a feline carrying B. henselae-infected fleas. CSD often presents clinically as a self-limited flu-like infection with painful regional lymphadenopathy appearing one to two weeks following initial transmission. However, a growing body of literature highlights abnormal presentations of Bartonella infections within the pediatric population. In this case report, we describe an atypical presentation of a B. henselae infection in an 11-year-old female with seizures, prolonged encephalopathy, agitation, and truncal instability. With an atypical presentation, a delay in diagnosis can result in potentially permanent organ damage, particularly as traditional empiric antibiotics fail to cover Bartonella infections. As such, proper treatment and complete resolution of symptoms require astute clinical recognition to make the correct diagnosis promptly.
Collapse
Affiliation(s)
- Emily J Etter
- Pediatrics, University of Nevada, Reno School of Medicine, Reno, USA
| | - Spencer J Trivitt
- Pediatrics, University of Nevada, Reno School of Medicine, Reno, USA
| | - Benjamin L Bosse
- Radiology, University of Nevada, Reno School of Medicine, Reno, USA
| | - Alison McWilliams
- Pediatrics, University of Nevada, Reno School of Medicine, Reno, USA
| |
Collapse
|
11
|
Reimer-Mcatee M, Ramirez D, Mcatee C, Granillo A, Hasbun R. Encephalitis in HIV-infected adults in the antiretroviral therapy era. J Neurol 2023; 270:3914-3933. [PMID: 37115358 DOI: 10.1007/s00415-023-11735-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023]
Abstract
INTRODUCTION Encephalitis presents with high morbidity and mortality in both HIV-infected and HIV-negative patients. There are currently no studies comparing HIV-infected and HIV-negative patients admitted to the hospital with acute encephalitis. METHODS We conducted a multicenter, retrospective study of adults admitted to the hospital with a diagnosis of encephalitis in Houston, Texas between 2005 and 2020. We describe the clinical manifestations, etiology, and outcomes of these patients with a focus on those infected with HIV. RESULTS We identified 260 patients with encephalitis, 40 of whom were infected with HIV. Viral etiology was identified in 18 of the 40 HIV-infected patients (45.0%); bacterial in 9 (22.5%); parasitic in 5 (12.5%); fungal in 3 (7.5%); immune-mediated in 2 (5.0%). Eleven cases had unclear etiology (27.5%). More than one disease process was identified in 12 (30.0%) patients. HIV-infected persons were more likely to have neurosyphilis (8/40 vs. 1/220; OR 55; 95%CI 6.6-450), CMV encephalitis [5/18 vs. 1/30; OR 11.2 (1.18-105)], or VZV encephalitis (8/21 vs. 10/89; OR 4.82; 1.62-14.6) compared to the HIV-negative patients. Inpatient mortality was similar in the HIV-infected and HIV-negative patients, 15.0% vs 9.5% [p = 0.4, OR 1.67 (0.63-4.44)], but one-year mortality was higher for the HIV-infected patients, 31.3% vs 16.0% [p = 0.04, OR 2.40 (1.02-5.55)]. CONCLUSION This large, multicenter study shows that HIV-infected patients with encephalitis have a distinct pattern of disease when compared with HIV-negative patients, and that this population has nearly twice the odds of mortality in the year following hospitalization.
Collapse
Affiliation(s)
- Melissa Reimer-Mcatee
- Section of Infectious Diseases, UT Health McGovern Medical School, Houston, TX, USA.
- Institute for Global Health and Infectious Diseases, University of North Carolina UNC Project Malawi, Lilongwe, Malawi.
- Washington University in St. Louis, ACHIEVE Fogarty Global Health Program, Lilongwe, Malawi.
| | - Denisse Ramirez
- Section of Infectious Diseases, UT Health McGovern Medical School, Houston, TX, USA
| | | | - Alejandro Granillo
- Section of Infectious Diseases, UT Health McGovern Medical School, Houston, TX, USA
| | - Rodrigo Hasbun
- Section of Infectious Diseases, UT Health McGovern Medical School, Houston, TX, USA.
| |
Collapse
|
12
|
Gillon S, Chan M, Chen J, Guterman EL, Wu X, Glastonbury CM, Li Y. MR Imaging Findings in a Large Population of Autoimmune Encephalitis. AJNR Am J Neuroradiol 2023:ajnr.A7907. [PMID: 37385678 PMCID: PMC10337613 DOI: 10.3174/ajnr.a7907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 05/24/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND AND PURPOSE Autoimmune encephalitis is a rare condition in which autoantibodies attack neuronal tissue, causing neuropsychiatric disturbances. This study sought to evaluate MR imaging findings associated with subtypes and categories of autoimmune encephalitis. MATERIALS AND METHODS Cases of autoimmune encephalitis with specific autoantibodies were identified from the medical record (2009-2019). Cases were excluded if no MR imaging of the brain was available, antibodies were associated with demyelinating disease, or >1 concurrent antibody was present. Demographics, CSF profile, antibody subtype and group (group 1 intracellular antigen or group 2 extracellular antigen), and MR imaging features at symptom onset were reviewed. Imaging and clinical features were compared across antibody groups using χ2 and Wilcoxon rank-sum tests. RESULTS Eighty-five cases of autoimmune encephalitis constituting 16 distinct antibodies were reviewed. The most common antibodies were anti-N-methyl-D-aspartate (n = 41), anti-glutamic acid decarboxylase (n = 7), and anti-voltage-gated potassium channel (n = 6). Eighteen of 85 (21%) were group 1; and 67/85 (79%) were group 2. The median time between MR imaging and antibody diagnosis was 14 days (interquartile range, 4-26 days). MR imaging had normal findings in 33/85 (39%), and 20/33 (61%) patients with normal MRIs had anti-N-methyl-D-aspartate receptor antibodies. Signal abnormality was most common in the limbic system (28/85, 33%); 1/68 (1.5%) had susceptibility artifacts. Brainstem and cerebellar involvement were more common in group 1, while leptomeningeal enhancement was more common in group 2. CONCLUSIONS Sixty-one percent of patients with autoimmune encephalitis had abnormal brain MR imaging findings at symptom onset, most commonly involving the limbic system. Susceptibility artifact is rare and makes autoimmune encephalitis less likely as a diagnosis. Brainstem and cerebellar involvement were more common in group 1, while leptomeningeal enhancement was more common in group 2.
Collapse
Affiliation(s)
- S Gillon
- From the School of Medicine (S.G., J.C.)
| | - M Chan
- Department of Radiology (M.C.), University of Toronto, Toronto, Ontario, Canada
| | - J Chen
- From the School of Medicine (S.G., J.C.)
| | | | - X Wu
- Department of Radiology and Biomedical Imaging (X.W., C.M.G., Y.L.), University of California San Francisco, San Francisco, California
| | - C M Glastonbury
- Department of Radiology and Biomedical Imaging (X.W., C.M.G., Y.L.), University of California San Francisco, San Francisco, California
| | - Y Li
- Department of Radiology and Biomedical Imaging (X.W., C.M.G., Y.L.), University of California San Francisco, San Francisco, California
| |
Collapse
|
13
|
Yong HYF, Pastula DM, Kapadia RK. Diagnosing viral encephalitis and emerging concepts. Curr Opin Neurol 2023; 36:175-184. [PMID: 37078655 DOI: 10.1097/wco.0000000000001155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
PURPOSE OF REVIEW This review offers a contemporary clinical approach to the diagnosis of viral encephalitis and discusses recent advances in the field. The neurologic effects of coronaviruses, including COVID-19, as well as management of encephalitis are not covered in this review. RECENT FINDINGS The diagnostic tools for evaluating patients with viral encephalitis are evolving quickly. Multiplex PCR panels are now in widespread use and allow for rapid pathogen detection and potentially reduce empiric antimicrobial exposure in certain patients, while metagenomic next-generation sequencing holds great promise in diagnosing challenging and rarer causes of viral encephalitis. We also review topical and emerging infections pertinent to neuroinfectious disease practice, including emerging arboviruses, monkeypox virus (mpox), and measles. SUMMARY Although etiological diagnosis remains challenging in viral encephalitis, recent advances may soon provide the clinician with additional tools. Environmental changes, host factors (such as ubiquitous use of immunosuppression), and societal trends (re-emergence of vaccine preventable diseases) are likely to change the landscape of neurologic infections that are considered and treated in clinical practice.
Collapse
Affiliation(s)
- Heather Y F Yong
- Division of Neurology, Department of Clinical Neurosciences, University of Calgary, Cummings School of Medicine, Calgary, Alberta, Canada
| | - Daniel M Pastula
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado School of Medicine
- Department of Epidemiology, Colorado School of Public Health, Aurora, Colorado, USA
| | - Ronak K Kapadia
- Division of Neurology, Department of Clinical Neurosciences, University of Calgary, Cummings School of Medicine, Calgary, Alberta, Canada
| |
Collapse
|
14
|
Tamzali Y, Scemla A, Bonduelle T, Garandeau C, Gilbert M, Randhawa S, De Nattes T, Hachad H, Pourcher V, Taupin P, Kaminski H, Hazzan M, Moal V, Matignon M, Fihman V, Levi C, Le Quintrec M, Chemouny JM, Rondeau E, Bertrand D, Thervet E, Tezenas Du Montcel S, Savoye E, Barrou B, Kamar N, Tourret J. Specificities of Meningitis and Meningo-Encephalitis After Kidney Transplantation: A French Retrospective Cohort Study. Transpl Int 2023; 36:10765. [PMID: 36744053 PMCID: PMC9889366 DOI: 10.3389/ti.2023.10765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 01/03/2023] [Indexed: 01/20/2023]
Abstract
Kidney transplant recipients develop atypical infections in their epidemiology, presentation and outcome. Among these, meningitis and meningoencephalitis require urgent and adapted anti-infectious therapy, but published data is scarce in KTRs. The aim of this study was to describe their epidemiology, presentation and outcome, in order to improve their diagnostic and management. We performed a retrospective, multicentric cohort study in 15 French hospitals that included all 199 cases of M/ME in KTRs between 2007 and 2018 (0.9 case per 1,000 KTRs annually). Epidemiology was different from that in the general population: 20% were due to Cryptococcus neoformans, 13.5% to varicella-zoster virus, 5.5% to Mycobacterium tuberculosis, and 4.5% to Enterobacteria (half of which produced extended spectrum beta-lactamases), and 5% were Post Transplant Lymphoproliferative Disorders. Microorganisms causing M/ME in the general population were infrequent (2%, for Streptococcus pneumoniae) or absent (Neisseria meningitidis). M/ME caused by Enterobacteria, Staphylococci or filamentous fungi were associated with high and early mortality (50%-70% at 1 year). Graft survival was not associated with the etiology of M/ME, nor was impacted by immunosuppression reduction. Based on these results, we suggest international studies to adapt guidelines in order to improve the diagnosis and the probabilistic treatment of M/ME in SOTRs.
Collapse
Affiliation(s)
- Y. Tamzali
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Medical and Surgical Department of Kidney Transplantation, Paris, France,Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Department of Infectious and Tropical Diseases, Paris, France,*Correspondence: Y. Tamzali,
| | - A. Scemla
- Université Paris-Descartes, Assistance Publique-Hôpitaux de Paris (AP-HP), Department of Nephrology and Kidney Transplantation, Hôpital Necker, Paris, France
| | - T. Bonduelle
- Neurology Department, Epilepsy Unit, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - C. Garandeau
- Nephrology Department, Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - M. Gilbert
- Nephrology and Transplantation Department, Centre Hospitalier Universitaire de Lille, Lille, France
| | - S. Randhawa
- Aix-Marseille Université, Hôpitaux Universitaires de Marseille, Hôpital Conception, Center of Nephrology and Kidney Transplantation, Marseille, France
| | - T. De Nattes
- Department of Nephrology Dialysis and Kidney Transplantation, Centre Hospitalier Universitaire de Rouen, Rouen, France
| | - H. Hachad
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Medical and Surgical Department of Kidney Transplantation, Paris, France
| | - V. Pourcher
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Department of Infectious and Tropical Diseases, Paris, France
| | - P. Taupin
- University Paris-Descartes, Assistance Publique-Hôpitaux de Paris (AP-HP), Department of Biostatistics, Necker Hospital, Paris, France
| | - H. Kaminski
- Department of Nephrology, Transplantation, Dialysis and Apheresis, CHU Bordeaux, Bordeaux, France
| | - M. Hazzan
- Nephrology and Transplantation Department, Centre Hospitalier Universitaire de Lille, Lille, France
| | - V. Moal
- Aix-Marseille Université, Hôpitaux Universitaires de Marseille, Hôpital Conception, Center of Nephrology and Kidney Transplantation, Marseille, France
| | - M. Matignon
- Université Paris Est Créteil, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Mondor de Recherche Biomédicale (IMRB), Créteil, France,Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpitaux Universitaires Henri Mondor, Service de Néphrologie et Transplantation, Fédération Hospitalo-Universitaire, Innovative Therapy for Immune Disorders, Créteil, France
| | - V. Fihman
- Bacteriology and Infection Control Unit, Department of Prevention, Diagnosis, and Treatment of Infections, Henri-Mondor University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Créteil, France,EA 7380 Dynamyc, EnvA, Paris-Est University (UPEC), Créteil, France
| | - C. Levi
- Department of Nephrology Immunology and Kidney Transplantation, Centre Hospitalier Univeristaire Edouard Herriot, Lyon, France
| | - M. Le Quintrec
- Department of Nephrology Dialysis and Kidney Transplantation, Centre Hospitalier Universitaire de Montpellier, Montpellier, France
| | - J. M. Chemouny
- Université de Rennes, CHU Rennes, INSERM, EHESP, IRSET—UMR_S 1085, CIC‐P 1414, Rennes, France
| | - E. Rondeau
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Department of Nephrology, SINRA, Hôpital Tenon, GHEP, Paris, France
| | - D. Bertrand
- Department of Nephrology Dialysis and Kidney Transplantation, Centre Hospitalier Universitaire de Rouen, Rouen, France
| | - E. Thervet
- Université Paris-Descartes, Assistance Publique-Hôpitaux de Paris (AP-HP), Department of Nephrology, Hôpital Europeen Georges Pompidou, Paris, France
| | - S. Tezenas Du Montcel
- Sorbonne Université, INSERM, Pierre Louis Epidemiology and Public Health Institute, Assistance Publique-Hopitaux de Paris (AP-HP), Medical Information Department, Pitié Salpêtrière-Charles Foix University Hospital, Paris, France
| | - E. Savoye
- Agence de la Biomédecine, Saint Denis, France
| | - B. Barrou
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Medical and Surgical Department of Kidney Transplantation, INSERM, UMR 1082, Paris, France
| | - N. Kamar
- Department of Nephrology and Organ, INFINITY-INSERM U1291-CNRS U5051, Université Paul Sabatier, Toulouse, France
| | - J. Tourret
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Medical and Surgical Department of Kidney Transplantation, INSERM, UMR 1138, Paris, France
| |
Collapse
|
15
|
Abdelrahim NA, Mohammed N, Evander M, Ahlm C, Fadl-Elmula IM. Viral meningitis in Sudanese children: Differentiation, etiology and review of literature. Medicine (Baltimore) 2022; 101:e31588. [PMID: 36401437 PMCID: PMC9678499 DOI: 10.1097/md.0000000000031588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Diagnosis of viral meningitis (VM) is uncommon practice in Sudan and there is no local viral etiological map. We therefore intended to differentiate VM using standardized clinical codes and determine the involvement of herpes simplex virus types-1 and 2 (HSV-1/2), varicella zoster virus, non-polio human enteroviruses (HEVs), and human parechoviruses in meningeal infections in children in Sudan. This is a cross-sectional hospital-based study. Viral meningitis was differentiated in 503 suspected febrile attendee of Omdurman Hospital for Children following the criteria listed in the Clinical Case Definition for Aseptic/Viral Meningitis. Patients were children age 0 to 15 years. Viral nucleic acids (DNA/RNA) were extracted from cerebrospinal fluid (CSF) specimens using QIAamp® UltraSens Virus Technology. Complementary DNA was prepared from viral RNA using GoScriptTM Reverse Transcription System. Viral nucleic acids were amplified and detected using quantitative TaqMan® Real-Time and conventional polymerase chain reactions (PCRs). Hospital diagnosis of VM was assigned to 0%, when clinical codes were applied; we considered 3.2% as having VM among the total study population and as 40% among those with proven infectious meningitis. Two (0.4%) out of total 503 CSF specimens were positive for HSV-1; Ct values were 37.05 and 39.10 and virus copies were 652/PCR run (261 × 103/mL CSF) and 123/PCR run (49.3 × 103/mL CSF), respectively. Other 2 (0.4%) CSF specimens were positive for non-polio HEVs; Ct values were 37.70 and 38.30, and the approximate virus copies were 5E2/PCR run (~2E5/mL CSF) and 2E2/PCR run (~8E4/mL CSF), respectively. No genetic materials were detected for HSV-2, varicella zoster virus, and human parechoviruses. The diagnosis of VM was never assigned by the hospital despite fulfilling the clinical case definition. Virus detection rate was 10% among cases with proven infectious meningitis. Detected viruses were HSV-1 and non-polio HEVs. Positive virus PCRs in CSFs with normal cellular counts were seen.
Collapse
Affiliation(s)
- Nada Abdelghani Abdelrahim
- Department of Pathology-Medical Microbiology, Faculty of Medicine, University of Medical Sciences and Technology, Khartoum, Sudan
- * Correspondence: Nada Abdelghani Abdelrahim, Department of Pathology-Medical Microbiology, Faculty of Medicine, University of Medical Sciences and Technology (UMST), P.O. Box 12810, Khartoum, Sudan (e-mail: )
| | - Nahla Mohammed
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Magnus Evander
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Clas Ahlm
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Imad Mohammed Fadl-Elmula
- Department of Pathology & Clinical Genetics, Al-Neelain University & Assafa Academy, Khartoum, Sudan
| |
Collapse
|
16
|
Kalchev Y, Murdjeva M. Current methods for microbiological diagnosis of acute central nervous system infections. Folia Med (Plovdiv) 2022; 64:709-715. [PMID: 36876544 DOI: 10.3897/folmed.64.e72257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/04/2021] [Indexed: 11/06/2022] Open
Abstract
The incidence of infections affecting the central nervous system has increased in recent years, making neuroinfections a current global health problem. The central nervous system is quite well protected from the external and internal environments, although it is susceptible to infection by a wide variety of pathogens. The etiological diversity further complicates the management of such infections because it is important to identify correctly the specific cause in order to choose the most appropriate antimicrobial therapy. Diagnosis is made not only based on clinical and epidemiological data but also on the results of clinical laboratory and microbiological examination of cerebrospinal fluid. This article aims to review current microbiological methods in the diagnosis of acute central nervous system infections and help healthcare providers to recognize their advantages and limitations in order to manage their patients appropriately.
Collapse
|
17
|
Feng W, Jiang X, Zhang R, Guo Z, Gao D. Diagnosis of an Acinetobacter pittii from a patient in China with a multiplex PCR-based targeted gene sequencing platform of the cerebrospinal fluid: A case report with literature review. Medicine (Baltimore) 2022; 101:e31130. [PMID: 36281177 PMCID: PMC9592278 DOI: 10.1097/md.0000000000031130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The traditional diagnosis model has great challenges for the etiological diagnosis of the central nervous system (CNS) diseases with similar clinical manifestations, especially for the diagnosis of rare pathogens. It is very important to make rapid and accurate identification of pathogens for guiding clinical choices in administering countermeasures. CASE SUMMARY On August 22, 2020, a 49 years old Chinese male patient had a headache for two days, and then the computed tomography (CT) scan of the brain showed subarachnoid hemorrhage. Subsequently, he underwent twice craniotomy and about 3 weeks of hospitalization. Since September 20, the patient was in the local rehabilitation hospital for hyperbaric oxygen therapy for about three weeks. Then the patient developed acute purulent meningoencephalitis. In the absence of diagnosis of specific pathogenic bacteria, vancomycin (1 g every 12 hours), ceftazidime (2 g every 8 hours), mannitol dehydration (125 mL, every 8 hours), and sodium valproate (0.4 g tid) was used timely according to cerebrospinal fluid (CSF) examination and clinical manifestations. CSF smear and routine culture test were negative during hospitalization. We used the metagenomic next-generation sequencing (mNGS) analysis of CSF for quick and accurate diagnosis, which identified human herpesvirus type 4 (EBV), Corynebacterium corynebacterium, Achromobacter xylose oxidation, and Acinetobacter baumannii, But the mapping degree was not high. Then, we used the modified method-multiplex PCR-based targeted gene sequencing platform (ptNGS) to detect CSF samples and found that the sequences detected were Acinetobacter pittii (A. pittii) and Staphylococcus epidermidis. S. epidermidis might come from skin colonization during lumbar puncture, so it was excluded from the etiological diagnosis. Therefore, we highly suspected that A. pittii was the pathogen in this case. After about three weeks of hospitalization treatment, the patient's symptoms were relieved. CONCLUSION In conclusion, empirical medication before the identification of pathogens is very important. The ptNGS may be an effective method for the diagnosis of pathogens.
Collapse
Affiliation(s)
- Wenliang Feng
- Department of Critical Care Medicine, Fengtai Youanmen Hospital, Beijing, China
| | - Xuebin Jiang
- Intensive Care Unit, Renhe Hospital, Beijing, China
| | - Rujiang Zhang
- Department of Neurology, Yunnan St John’s Hospital, Yunnan, China
| | - Zhendong Guo
- Department of Science and Technology, Shanghai, China
| | - Daiquan Gao
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- *Correspondence: Daiquan Gao, Department of Neurology, Xuanwu Hospital of Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing 100053, China (e-mail: )
| |
Collapse
|
18
|
Etiology and Risk Factors for Admission to the Pediatric Intensive Care Unit in Children With Encephalitis in a Developing Country. Pediatr Infect Dis J 2022; 41:806-812. [PMID: 35830514 DOI: 10.1097/inf.0000000000003637] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To describe a cohort of pediatric patients with encephalitis and their risk factors for admission to the pediatric intensive care unit (PICU). STUDY DESIGN Children (<18 years old), with encephalitis evaluated by conventional microbiology and syndromic, multiplex test in cerebrospinal fluid (CSF) between July 2017 and July 2020, were recruited from 14 hospitals that comprise the Colombian Network of Encephalitis in Pediatrics. Multivariate analyses were used to evaluate risk factors associated with the need for PICU admission. RESULTS Two hundred two children were included, of which 134 (66.3%) were male. The median age was 23 months (IQR 5.7-73.2). The main etiologies were bacteria (n = 55, 27%), unspecified viral encephalitis (n = 44, 22%) and enteroviruses (n = 27, 13%), with variations according to age group. Seventy-eight patients (38.6%) required management in the PICU. In multivariate analysis, factors associated with admission to the PICU were the presence of generalized seizures (OR 2.73; 95% CI: 1.82-4.11), status epilepticus (OR 3.28; 95% CI: 2.32-4.62) and low leukocyte counts in the CSF (OR 2.86; 95% CI: 1.47-5.57). Compared with enterovirus, bacterial etiology (OR 7.50; 95% CI: 1.0-56.72), herpes simplex encephalitis (OR 11.81; 95% CI: 1.44-96.64), autoimmune encephalitis (OR 22.55; 95% CI: 3.68-138.16) and other viral infections (OR 5.83; 95% CI: 1.09-31.20) increased the risk of PICU admission. CONCLUSIONS Data from this national collaborative network of pediatric patients with encephalitis allow early identification of children at risk of needing advanced care and can guide the risk stratification of admission to the PICU.
Collapse
|
19
|
Wang J, Ye J, Yang L, Chen X, Fang H, Liu Z, Xia G, Zhang Y, Zhang Z. Inconsistency analysis between metagenomic next-generation sequencing results of cerebrospinal fluid and clinical diagnosis with suspected central nervous system infection. BMC Infect Dis 2022; 22:764. [PMID: 36180859 PMCID: PMC9523998 DOI: 10.1186/s12879-022-07729-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 09/09/2022] [Indexed: 12/02/2022] Open
Abstract
Background Recently, with the rapid progress of metagenomic next-generation sequencing (mNGS), inconsistency between mNGS results and clinical diagnoses has become more common. There is currently no reasonable explanation for this, and the interpretation of mNGS reports still needs to be standardised. Methods A retrospective analysis was conducted on 47 inpatients with suspected central nervous system (CNS) infections, and clinical data were recorded. The final diagnosis was determined by an expert group based on the patient’s clinical manifestation, laboratory examination, and response to treatment. mNGS results were compared with the final diagnosis, and any inconsistencies that occurred were investigated. Finally, the credibility of mNGS results was evaluated using the integral approach, which consists of three parts: typical clinical features, positive results with the traditional method, and cerebrospinal fluid cells ≥ 100 (× 106/L) or protein ≥ 500 mg/L, with one point for each item. Results Forty-one patients with suspected CNS infection were assigned to infected (ID, 31/41, 75.61%) and non-infected groups (NID, 10/41, 24.39%) after assessment by a panel of experts according to the composite diagnostic criteria. For mNGS-positive results, 20 of the 24 pathogens were regarded as contaminants when the final score was ≤ 1. The remaining 11 pathogens detected by mNGS were all true positives, which was consistent with the clinical diagnosis when the score was ≥ 2. For mNGS negative results, when the score was ≥ 2, the likelihood of infection may be greater than when the score is ≤ 1. Conclusion The integral method is effective for evaluating mNGS results. Regardless of whether the mNGS result was positive or negative, the possibility of infection was greater when the score was ≥ 2. A negative mNGS result does not necessarily indicate that the patient was not clinically infected, and, therefore, clinical features are more important. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07729-0.
Collapse
Affiliation(s)
- Jin Wang
- Department of Infectious Diseases, The Second Hospital of Anhui Medical University, Hefei, 230601, China
| | - Jun Ye
- Department of Infectious Diseases, The Second Hospital of Anhui Medical University, Hefei, 230601, China
| | - Liqi Yang
- Department of Infection Management, The Second Hospital of Anhui Medical University, Hefei, China
| | - Xiangfeng Chen
- Department of Infection Management, The Second Hospital of Anhui Medical University, Hefei, China
| | - Haoshu Fang
- Department of Pathophysiology, Anhui Medical University, Hefei, China
| | - Zhou Liu
- Department of Clinical Laboratory, The Second Hospital of Anhui Medical University, Hefei, China
| | - Guomei Xia
- Department of Infectious Diseases, The Second Hospital of Anhui Medical University, Hefei, 230601, China
| | - Yafei Zhang
- Department of Infectious Diseases, The Second Hospital of Anhui Medical University, Hefei, 230601, China
| | - Zhenhua Zhang
- Department of Infectious Diseases, The Second Hospital of Anhui Medical University, Hefei, 230601, China.
| |
Collapse
|
20
|
Bami S, Hidinger J, Madni A, Hargest V, Schultz-Cherry S, Cortez V, Cross SJ, Ward DA, Hayden RT, Rubnitz J, Pui CH, Khan RB, Hijano DR. Human Astrovirus VA1 Encephalitis in Pediatric Patients With Cancer: Report of 2 Cases and Review of the Literature. J Pediatric Infect Dis Soc 2022; 11:408-412. [PMID: 35849135 DOI: 10.1093/jpids/piac045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 05/25/2022] [Indexed: 11/14/2022]
Abstract
Novel human astroviruses (HAstVs) have recently been implicated as rare causes of fatal encephalitis in immunocompromised patients, for which there is no proven treatment. We report 2 cases from our institution in which HAstV-VA1 was detected in the cerebrospinal fluid by metagenomic next-generation sequencing after the initial evaluation revealed no etiology.
Collapse
Affiliation(s)
- Sakshi Bami
- Hospitalist Medicine Program, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Jennifer Hidinger
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Arshia Madni
- Hospitalist Medicine Program, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.,Division of Quality of Life and Palliative Care, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Virginia Hargest
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Stacey Schultz-Cherry
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Valerie Cortez
- Department of Molecular and Cell & Developmental Biology, University of California, Santa Cruz, California, USA
| | - Shane J Cross
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Deborah A Ward
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Randall T Hayden
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Jeffrey Rubnitz
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Ching-Hon Pui
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.,Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Raja B Khan
- Division of Neurology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Diego R Hijano
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| |
Collapse
|
21
|
Chen JH, Wu J, Yang XY, Li J, Huang NQ, Shi SP, Feng F, Li Q, Yu CY, Luo Y. Diagnostic Value of the Electroencephalogram and Cerebrospinal Fluid in Viral Encephalitis. Neurologist 2022; 27:225-229. [PMID: 35184121 DOI: 10.1097/nrl.0000000000000395] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Electroencephalogram (EEG) and cerebrospinal fluid (CSF) are widely used in the clinical diagnosis of viral encephalitis (VE), but their value in the diagnosis of VE and the detection rate of abnormal indicators need to be further supported by more clinical data. METHODS In this study, routine laboratory testing, biochemical examinations of cerebrospinal fluid (CSF) and EEG characteristics were performed in patients with VE to guide the diagnosis and treatment of VE in clinical settings. A total of 330 patients with VE were enrolled in the Department of Neurology of the Third Affiliated Hospital of Zunyi Medical University from January 1, 2015 to January 30, 2020. EEG, routine testing and assessment of biochemical indicators of CSF were performed within 10 days after admission, and the results were analyzed by paired χ 2 test to compare the diagnostic value of EEG and CSF for VE. RESULTS In 330 cases of VE, 283 cases (85.76%) had abnormal EEG, and 189 cases (57.27%) had abnormal CSF indicators. The incidence of EEG abnormalities was higher than that of CSF indicators, and the difference was statistically significant ( P <0.05). CONCLUSIONS Both the EEG and CSF analysis are valuable indicators in the diagnosis of VE patients. Compared with the CSF examination, the EEG examination had a better diagnostic efficacy for the diagnosis of VE. In addition, a normal EEG or a normal CSF level cannot exclude VE, and it is still necessary to develop new diagnostic indicators to cover all viral encephalitides.
Collapse
Affiliation(s)
| | - Jie Wu
- Scientific Research Center
| | | | | | | | - Shang-Peng Shi
- Department of Quality Management, The First People's Hospital of Zunyi (The Third Affiliated Hospital of Zunyi Medical University)
| | | | | | - Chang-Yin Yu
- Department of Neurology, The Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | | |
Collapse
|
22
|
Billeter SA. A Review of Bartonella Infections in California-Implications for Public and Veterinary Health. JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:1154-1163. [PMID: 35535811 DOI: 10.1093/jme/tjac056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Bartonella are vector-transmitted, intracellular bacteria that infect a wide variety of blood-feeding arthropods and their vertebrate hosts. In California, more than 13 species of Bartonella have been described from companion animals, livestock, and wildlife, of which four have been associated with human disease. Infections in humans cause a range of symptoms from relatively mild to severe, especially in immunocompromised individuals. Exposure to infected domestic animals and wildlife, and their ectoparasites, may increase the risk of cross-species transmission. The objective of this review was to compile and summarize published materials on human and animal Bartonella infections in California. Medical and veterinary case reports of bartonellosis were highlighted in an effort to increase the awareness of this poorly understood and potentially under-recognized disease among healthcare professionals and veterinarians.
Collapse
Affiliation(s)
- Sarah A Billeter
- California Department of Public Health, Vector Borne Disease Section, 2151 Convention Center Way, Suite 226, Ontario, CA 91764, USA
| |
Collapse
|
23
|
Karaaslan A, Çetin C, Köle MT, Çağ Y, Tekol SD, Akın Y. Investigation of the Etiological Causes of Central Nervous System Infection in Children with Multiplex PCR. J PEDIAT INF DIS-GER 2022. [DOI: 10.1055/s-0042-1749647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Objective The aim of this study is to investigate the causative agents of central nervous system (CNS) infection in hospitalized pediatric patients by multiplex polymerase chain reaction.
Methods We retrospectively reviewed the medical records of children who underwent lumbar puncture with suspected CNS infection between September 2019 and September 2021. The cerebrospinal fluid (CSF) samples were evaluated by the BioFire FilmArray Meningitis/Encephalitis (ME) Panel.
Results The etiology of the infection was established in 13,02% (n = 25) cases. Human herpesvirus (HHV) type 6 was the most commonly identified pathogen 60% (n = 15), followed by enterovirus 20% (n = 5), Streptococcus pneumoniae 8% (n = 2), Streptococcus agalactiae 4% (n = 1), HHV type 1 4% (n = 1), and Listeria monocytogenes 4% (n = 1). The statistical analysis showed that the age of the group with enterovirus was younger than the age of the group with other causative microorganisms and the group with HHV-6 (respectively p: 0.032; p: 0.011). The hospitalization periods of the group with enterovirus and HHV-6 were shorter than the hospitalization periods of the other causative microorganisms (respectively p: 0.016; p: 0.000) and the absolute neutrophil count values of the group with HHV-6 were lower than the group of other causative microorganisms (p: 0.015).
Conclusion Our study identified HHV-6 as the main cause of CNS infection in Istanbul during coronavirus disease 2019 pandemic when isolation measures were taken. The duration of hospital stay was found to be shorter in CNS infection caused by viral agents. Revealing the causative agent in the CSF is a fast and effective method that prevents unnecessary antibiotic treatment and shortens the hospitalization period of patients.
Collapse
Affiliation(s)
- Ayşe Karaaslan
- Department of Pediatric Infectious Diseases, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Ceren Çetin
- Department of Pediatric Infectious Diseases, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Mehmet Tolga Köle
- Department of Pediatrics, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Yakup Çağ
- Department of Pediatrics, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Serap Demir Tekol
- Department of Microbiology, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| | - Yasemin Akın
- Department of Pediatrics, University of Health Sciences, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
| |
Collapse
|
24
|
Pommier JD, Gorman C, Crabol Y, Bleakley K, Sothy H, Santy K, Tran HTT, Nguyen LV, Bunnakea E, Hlaing CS, Aye AMM, Cappelle J, Herrant M, Piola P, Rosset B, Chevalier V, Tarantola A, Channa M, Honnorat J, Pinto AL, Rattanavong S, Vongsouvath M, Mayxay M, Phangmanixay S, Phongsavath K, Tin OS, Kyaw LL, Tin HH, Linn K, Tran TMH, Pérot P, Thuy NTT, Hien N, Phan PH, Buchy P, Dussart P, Laurent D, Eloit M, Dubot-Pérès A, Lortholary O, de Lamballerie X, Newton PN, Lecuit M. Childhood encephalitis in the Greater Mekong region (the SouthEast Asia Encephalitis Project): a multicentre prospective study. Lancet Glob Health 2022; 10:e989-e1002. [PMID: 35714649 PMCID: PMC9210261 DOI: 10.1016/s2214-109x(22)00174-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 03/09/2022] [Accepted: 03/23/2022] [Indexed: 12/11/2022]
Abstract
BACKGROUND Encephalitis is a worldwide public health issue, with a substantially high burden among children in southeast Asia. We aimed to determine the causes of encephalitis in children admitted to hospitals across the Greater Mekong region by implementing a comprehensive state-of-the-art diagnostic procedure harmonised across all centres, and identifying clinical characteristics related to patients' conditions. METHODS In this multicentre, observational, prospective study of childhood encephalitis, four referral hospitals in Cambodia, Vietnam, Laos, and Myanmar recruited children (aged 28 days to 16 years) who presented with altered mental status lasting more than 24 h and two of the following minor criteria: fever (within the 72 h before or after presentation), one or more generalised or partial seizures (excluding febrile seizures), a new-onset focal neurological deficit, cerebrospinal fluid (CSF) white blood cell count of 5 per mL or higher, or brain imaging (CT or MRI) suggestive of lesions of encephalitis. Comprehensive diagnostic procedures were harmonised across all centres, with first-line testing was done on samples taken at inclusion and results delivered within 24 h of inclusion for main treatable causes of disease and second-line testing was done thereafter for mostly non-treatable causes. An independent expert medical panel reviewed the charts and attribution of causes of all the included children. Using multivariate analyses, we assessed risk factors associated with unfavourable outcomes (ie, severe neurological sequelae and death) at discharge using data from baseline and day 2 after inclusion. This study is registered with ClinicalTrials.gov, NCT04089436, and is now complete. FINDINGS Between July 28, 2014, and Dec 31, 2017, 664 children with encephalitis were enrolled. Median age was 4·3 years (1·8-8·8), 295 (44%) children were female, and 369 (56%) were male. A confirmed or probable cause of encephalitis was identified in 425 (64%) patients: 216 (33%) of 664 cases were due to Japanese encephalitis virus, 27 (4%) were due to dengue virus, 26 (4%) were due to influenza virus, 24 (4%) were due to herpes simplex virus 1, 18 (3%) were due to Mycobacterium tuberculosis, 17 (3%) were due to Streptococcus pneumoniae, 17 (3%) were due to enterovirus A71, 74 (9%) were due to other pathogens, and six (1%) were due to autoimmune encephalitis. Diagnosis was made within 24 h of admission to hospital for 83 (13%) of 664 children. 119 (18%) children had treatable conditions and 276 (42%) had conditions that could have been preventable by vaccination. At time of discharge, 153 (23%) of 664 children had severe neurological sequelae and 83 (13%) had died. In multivariate analyses, risk factors for unfavourable outcome were diagnosis of M tuberculosis infection upon admission (odds ratio 3·23 [95% CI 1·04-10·03]), coma on day 2 (2·90 [1·78-4·72]), supplementary oxygen requirement (1·89 [1·25-2·86]), and more than 1 week duration between symptom onset and admission to hospital (3·03 [1·68-5·48]). At 1 year after inclusion, of 432 children who were discharged alive from hospital with follow-up data, 24 (5%) had died, 129 (30%) had neurological sequelae, and 279 (65%) had completely recovered. INTERPRETATION In southeast Asia, most causes of childhood encephalitis are either preventable or treatable, with Japanese encephalitis virus being the most common cause. We provide crucial information that could guide public health policy to improve diagnostic, vaccination, and early therapeutic guidelines on childhood encephalitis in the Greater Mekong region. FUNDING Institut Pasteur, Institut Pasteur International Network, Fondation Merieux, Aviesan Sud, INSERM, Wellcome Trust, Institut de Recherche pour le Développement (IRD), and Fondation Total.
Collapse
Affiliation(s)
- Jean David Pommier
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia; Institut Pasteur, Biology of Infection Unit, Paris, France; Inserm U1117, Paris, France; Intensive Care Department, University Hospital of Guadeloupe, Guadeloupe, France
| | - Chris Gorman
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Yoann Crabol
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Kevin Bleakley
- Université Paris-Saclay, CNRS, Inria, Laboratoire de Mathématiques d'Orsay, Orsay, France
| | - Heng Sothy
- Kantha Bopha IV Children's Hospital, Phnom Penh, Cambodia
| | - Ky Santy
- Kantha Bopha IV Children's Hospital, Phnom Penh, Cambodia
| | | | | | - Em Bunnakea
- Kantha Bopha IV Children's Hospital, Phnom Penh, Cambodia
| | | | | | - Julien Cappelle
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia; French Agricultural Research Centre for International Development (CIRAD), Montpellier, France
| | - Magali Herrant
- International Department, Institut Pasteur, Paris, France
| | - Patrice Piola
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Bruno Rosset
- French Agricultural Research Centre for International Development (CIRAD), Montpellier, France
| | - Veronique Chevalier
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia; French Agricultural Research Centre for International Development (CIRAD), Montpellier, France
| | - Arnaud Tarantola
- Epidemiology and Public Health Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Mey Channa
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Jerome Honnorat
- French Reference Center for Paraneoplastic Neurological Syndromes and Autoi mmune Encephalitis, Hospices Civils de Lyon, Synatac Team, NeuroMyoGene Institute, Inserm U1217/CNRS UMR5310, Université de Lyon, Lyon, France
| | - Anne Laure Pinto
- French Reference Center for Paraneoplastic Neurological Syndromes and Autoi mmune Encephalitis, Hospices Civils de Lyon, Synatac Team, NeuroMyoGene Institute, Inserm U1217/CNRS UMR5310, Université de Lyon, Lyon, France
| | - Sayaphet Rattanavong
- Lao-Oxford-Mahosot Hospital, Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
| | - Manivanh Vongsouvath
- Lao-Oxford-Mahosot Hospital, Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos
| | - Mayfong Mayxay
- Lao-Oxford-Mahosot Hospital, Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos; Unité des Virus Émergents, Marseille, France
| | | | | | | | | | | | - Kyaw Linn
- Yangon Children's Hospital, Yangon, Myanmar
| | | | - Philippe Pérot
- Laboratory for Pathogen Discovery, Institut Pasteur, Paris, France
| | | | - Nguyen Hien
- National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
| | | | - Philippe Buchy
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Philippe Dussart
- Virology Unit, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Denis Laurent
- Kantha Bopha IV Children's Hospital, Phnom Penh, Cambodia
| | - Marc Eloit
- Laboratory for Pathogen Discovery, Institut Pasteur, Paris, France; Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Audrey Dubot-Pérès
- Lao-Oxford-Mahosot Hospital, Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos; Unité des Virus Émergents, Marseille, France; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - Olivier Lortholary
- Université Paris Cité, Department of Infectious Diseases and Tropical Medicine, Necker-Enfants Malades University Hospital, Institut Imagine, Assistance Publique-Hôpitaux de Paris, Paris, France; Institut Pasteur, CNRS, Molecular Mycology Unit, National Reference Center for Mycoses and Antifungals, UMR 2000, Paris, France
| | | | - Paul N Newton
- Lao-Oxford-Mahosot Hospital, Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Laos; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Churchill Hospital, Oxford, UK
| | - Marc Lecuit
- Institut Pasteur, Biology of Infection Unit, Paris, France; Inserm U1117, Paris, France; Université Paris Cité, Department of Infectious Diseases and Tropical Medicine, Necker-Enfants Malades University Hospital, Institut Imagine, Assistance Publique-Hôpitaux de Paris, Paris, France.
| |
Collapse
|
25
|
Gandhi S, Narasimhan S, Workineh A, Mamula M, Yoon J, Krause PJ, Farhadian SF. Borrelia miyamotoi Meningoencephalitis in an Immunocompetent Patient. Open Forum Infect Dis 2022; 9:ofac295. [PMID: 35873293 PMCID: PMC9301576 DOI: 10.1093/ofid/ofac295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/09/2022] [Indexed: 12/01/2022] Open
Abstract
Borrelia miyamotoi is an underdiagnosed cause of tick-borne illness in endemic regions and, in rare cases, causes neurological disease in immunocompetent patients. Here, we present a case of serologically confirmed Borrelia miyamotoi meningoencephalitis in an otherwise healthy patient who rapidly improved following initiation of antibiotic therapy.
Collapse
Affiliation(s)
- Shiv Gandhi
- Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Sukanya Narasimhan
- Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Aster Workineh
- Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Mark Mamula
- Section of Rheumatology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Jennifer Yoon
- Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Peter J Krause
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health and Yale School of Medicine, New Haven, Connecticut, USA
| | - Shelli F Farhadian
- Correspondence: Shelli Farhadian, 135 College St, New Haven, CT 06510 ()
| |
Collapse
|
26
|
Patients with Infections of The Central Nervous System Have Lowered Gut Microbiota Alpha Diversity. Curr Issues Mol Biol 2022; 44:2903-2914. [PMID: 35877424 PMCID: PMC9318043 DOI: 10.3390/cimb44070200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 11/17/2022] Open
Abstract
There are multiple lines of evidence for the existence of communication between the central nervous system (CNS), gut, and intestinal microbiome. Despite extensive analysis conducted on various neurological disorders, the gut microbiome was not yet analyzed in neuroinfections. In the current study, we analyzed the gut microbiome in 47 consecutive patients hospitalized with neuroinfection (26 patients had viral encephalitis/meningitis; 8 patients had bacterial meningitis) and in 20 matched for age and gender health controls. Using the QIIME pipeline, 16S rRNA sequencing and classification into operational taxonomic units (OTUs) were performed on the earliest stool sample available. Bacterial taxa such as Clostridium, Anaerostipes, Lachnobacterium, Lachnospira, and Roseburia were decreased in patients with neuroinfection when compared to controls. Alpha diversity metrics showed lower within-sample diversity in patients with neuroinfections, though there were no differences in beta diversity. Furthermore, there was no significant change by short-term (1-3 days) antibiotic treatment on the gut microbiota, although alpha diversity metrics, such as Chao1 and Shannon's index, were close to being statistically significant. The cause of differences between patients with neuroinfections and controls is unclear and could be due to inflammation accompanying the disease; however, the effect of diet modification and/or hospitalization cannot be excluded.
Collapse
|
27
|
Safavi M, Taghipour S, Vasei M, Eshaghi H, Haghi Ashtiani MT. Evaluation of human bocavirus as well as other well-known viral etiologic agents by PCR in the cerebrospinal fluid of children with clinical impression of viral meningoencephalitis referred to the Children's Medical Center in Tehran, Iran, from 2019 to 2020. J Med Virol 2022; 94:4944-4949. [PMID: 35689362 DOI: 10.1002/jmv.27930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 11/08/2022]
Abstract
Viral meningoencephalitis is one of the most important diseases that most commonly affect children. In many cases of viral meningoencephalitis, the underlying cause of the disease is not identified, raising the possibility of a variety of pathogens that are not routinely tested. Bocaviruses belong to a newly identified class of viruses that have been reported in some studies to be associated with viral encephalitis. In the present study, we investigated the prevalence of bocaviruses and other viruses in the patients suspected of having viral encephalitis and their associations with various demographic and clinical variables. Two hundred patients with suspected viral meningoencephalitis referred to Children's Medical Center were studied from 2019 to 2020. Age, sex, length of hospitalization, and course of the disease were gathered. Cerebrospinal fluid (CSF) samples were taken from the patients and subjected to biochemical examinations and PCR to identify the underlying cause. Bocaviruses were detected in none of the DNA samples extracted from the CSF specimens. The most identified organisms were mumps and enteroviruses. In 92% of cases, the underlying cause was not identified. PCR-based identification of the underlying causes of viral meningoencephalitis in CSF specimens was not successful in most cases. Bocavirus was not found in any of the collected CSF samples. Further studies are required for drawing more accurate conclusions.
Collapse
Affiliation(s)
- Moeinadin Safavi
- Molecular Pathology and Cytogenetics Division, Pathology Department, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Salameh Taghipour
- Molecular Pathology and Cytogenetics Division, Pathology Department, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Vasei
- Molecular Pathology and Cytogenetics Division, Pathology Department, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Cell-based Therapies Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Eshaghi
- Department of Infectious, Diseases, Pediatric's Center of Excellence, Children's Medical, Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Taghi Haghi Ashtiani
- Molecular Pathology and Cytogenetics Division, Pathology Department, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
28
|
Bani-Sadr A, Ruitton-Allinieu MC, Brisset JC, Ducray F, Joubert B, Picard G, Cotton F. Contribution of diffusion-weighted imaging to distinguish herpetic encephalitis from auto-immune encephalitis at an early stage. J Neuroradiol 2022; 50:288-292. [PMID: 35662572 DOI: 10.1016/j.neurad.2022.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To determine whether diffusion-weighted imaging (DWI) can help to distinguish early stage autoimmune (AI) and herpes simplex virus (HSV) encephalitides. METHODS This case-control study included patients from a multi-center cohort of AI encephalitides whose initial MRI including DWI was performed within ten days after symptoms onset. They were compared with patients with HSV encephalitis enrolled prospectively in a single-center from June, 2020 to December, 2020. The final diagnosis of AI encephalitis required a positive autoantibody assay, and that of HSV encephalitis required a positive HSV polymerase chain reaction based on cerebrospinal fluid. Brain MRI were evaluated for restricted diffusion, fluid-inversion recovery (FLAIR) abnormalities, lesion topography, hemorrhagic changes, and contrast enhancement. RESULTS Forty-nine patients were included of which, 19 (38.8%) had AI encephalitis. Twenty-seven patients (55.1%) were males and the median age was 46.0 years (interquartile range (IQR):[22.0; 65.0]). Brain MRI were performed after a median of 4 days (IQR:[2.0; 7.0]) of symptom onset and time between symptom onset and MRI was not significantly different (p=0.60). Twenty-six patients had restricted diffusion lesions in the medial temporal lobe, including 25/30 in the HSV encephalitis group (p<0.001). FLAIR abnormalities were observed in 36 patients, including 29/30 in the HSV encephalitis group (p<0.001). Lesion topography, hemorrhagic changes, and contrast enhancement did not differ significantly between the two groups. CONCLUSION Our results suggest that restricted diffusion lesions in the medial temporal lobe are a hallmark of HSV encephalitis and may help distinguish it from early-stage AI encephalitis.
Collapse
Affiliation(s)
- Alexandre Bani-Sadr
- Service de Radiologie, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France; Service de Radiologie, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Pierre-Bénite, France
| | - Marie-Camille Ruitton-Allinieu
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, F-69495, Pierre-Bénite, France
| | | | - François Ducray
- Centre National de Référence pour les Syndromes Neurologiques Paranéoplasiques, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France
| | - Bastien Joubert
- Centre National de Référence pour les Syndromes Neurologiques Paranéoplasiques, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France
| | - Géraldine Picard
- Centre National de Référence pour les Syndromes Neurologiques Paranéoplasiques, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron, France
| | - François Cotton
- Service de Radiologie, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Pierre-Bénite, France; Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, F-69495, Pierre-Bénite, France.
| |
Collapse
|
29
|
Surveillance of Viral Encephalitis in the Context of COVID-19: A One-Year Observational Study among Hospitalized Patients in Dakar, Senegal. Viruses 2022; 14:v14050871. [PMID: 35632613 PMCID: PMC9145710 DOI: 10.3390/v14050871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 02/05/2023] Open
Abstract
The burden of encephalitis and its associated viral etiology is poorly described in Africa. Moreover, neurological manifestations of COVID-19 are increasingly reported in many countries, but less so in Africa. Our prospective study aimed to characterize the main viral etiologies of patients hospitalized for encephalitis in two hospitals in Dakar. From January to December 2021, all adult patients that met the inclusion criteria for clinical infectious encephalitis were enrolled. Cerebrospinal fluids, blood, and nasopharyngeal swabs were taken and tested for 27 viruses. During the study period, 122 patients were enrolled. Viral etiology was confirmed or probable in 27 patients (22.1%), with SARS-CoV-2 (n = 8), HSV-1 (n = 7), HHV-7 (n = 5), and EBV (n = 4) being the most detected viruses. Age groups 40–49 was more likely to be positive for at least one virus with an odds ratio of 7.7. The mortality was high among infected patients, with 11 (41%) deaths notified during hospitalization. Interestingly, SARS-CoV-2 was the most prevalent virus in hospitalized patients presenting with encephalitis. Our results reveal the crucial need to establish a country-wide surveillance of encephalitis in Senegal to estimate the burden of this disease in our population and implement strategies to improve care and reduce mortality.
Collapse
|
30
|
Genetic variation in genes of inborn errors of immunity in children with unexplained encephalitis. Genes Immun 2022; 23:235-239. [PMID: 36198812 PMCID: PMC9533258 DOI: 10.1038/s41435-022-00185-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 01/07/2023]
Abstract
Pediatric encephalitis has significant morbidity and mortality, yet 50% of cases are unexplained. Host genetics plays a role in encephalitis' development; however, the contributing variants are poorly understood. One child with anti-NMDA receptor encephalitis and ten with unexplained encephalitis underwent whole genome sequencing to identify rare candidate variants in genes known to cause monogenic immunologic and neurologic disorders, and polymorphisms associated with increased disease risk. Using the professional Human Genetic Mutation Database (Qiagen), we divided the candidate variants into three categories: monogenic deleterious or potentially deleterious variants (1) in a disease-consistent inheritance pattern; (2) in carrier states; and (3) disease-related polymorphisms. Six patients (55%) had a deleterious or potentially deleterious variant in a disease-consistent inheritance pattern, five (45%) were heterozygous carriers for an autosomal recessive condition, and six (55%) carried a disease-related polymorphism. Finally, seven (64%) had more than one variant, suggesting possible polygenetic risk. Among variants identified were those implicated in atypical hemolytic uremic syndrome, common variable immunodeficiency, hemophagocytic lymphohistiocytosis, and systemic lupus erythematosus. This preliminary study shows genetic variation related to inborn errors of immunity in acute pediatric encephalitis. Future research is needed to determine if these variants play a functional role in the development of unexplained encephalitis.
Collapse
|
31
|
Ai J, Zhang H, Yu S, Li J, Chen S, Zhang W, Mao R. A case of fatal amoebic encephalitis caused by Balamuthia mandrillaris, China. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 97:105190. [PMID: 34954104 DOI: 10.1016/j.meegid.2021.105190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 12/05/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
We reported a case of B.mandrillaris amoebic encephalitis in mainland China. Metagenomics next-generation sequencing helped initial diagnosis and then polymerase chain reaction of the B.mandrillaris in the infected nasal skin tissues reported positive and amoeba cysts were found in the tissue under microscopic observation.
Collapse
Affiliation(s)
- Jingwen Ai
- Huashan Hospital of Fudan University, Shanghai, China
| | - Hanyue Zhang
- Huashan Hospital of Fudan University, Shanghai, China.
| | - Shenglei Yu
- Huashan Hospital of Fudan University, Shanghai, China
| | - Jian Li
- Huashan Hospital of Fudan University, Shanghai, China
| | - Shu Chen
- Huashan Hospital of Fudan University, Shanghai, China.
| | - Wenhong Zhang
- Huashan Hospital of Fudan University, Shanghai, China
| | - Richeng Mao
- Huashan Hospital of Fudan University, Shanghai, China.
| |
Collapse
|
32
|
Graff K, Dominguez SR, Messacar K. Metagenomic Next-Generation Sequencing for Diagnosis of Pediatric Meningitis and Encephalitis: A Review. J Pediatric Infect Dis Soc 2021; 10:S78-S87. [PMID: 34951470 PMCID: PMC8703254 DOI: 10.1093/jpids/piab067] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Metagenomic next-generation sequencing is a novel diagnostic test with the potential to revolutionize the diagnosis of pediatric meningitis and encephalitis through unbiased detection of bacteria, viruses, parasites, and fungi in cerebrospinal fluid. Current literature is mostly observational with variable indications, populations, and timing of testing with resulting variability in diagnostic yield and clinical impact. Diagnostic stewardship strategies are needed to direct testing toward high-impact pediatric populations, to optimize timing of testing, to ensure appropriate interpretation of results, and to guide prompt optimization of antimicrobials. This review highlights the high clinical potential of this test, though future studies are needed to gather clinical impact and cost-effectiveness data for specific indications in pediatric populations.
Collapse
Affiliation(s)
- Kelly Graff
- Section of Infectious Diseases, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA,Corresponding Author: Kelly E. Graff, MD, Pediatric Infectious Diseases, Children’s Hospital Colorado, B055, 13123 E 16th Ave, Aurora, CO 80045, USA. E-mail:
| | - Samuel R Dominguez
- Section of Infectious Diseases, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA,Department of Pathology and Laboratory Medicine, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Kevin Messacar
- Section of Infectious Diseases, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
| |
Collapse
|
33
|
Ungureanu A, van der Meer J, Bicvic A, Abbuehl L, Chiffi G, Jaques L, Suter-Riniker F, Leib SL, Bassetti CLA, Dietmann A. Meningitis, meningoencephalitis and encephalitis in Bern: an observational study of 258 patients. BMC Neurol 2021; 21:474. [PMID: 34872509 PMCID: PMC8647376 DOI: 10.1186/s12883-021-02502-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 11/25/2021] [Indexed: 12/05/2022] Open
Abstract
Background Depending on geographic location, causes of encephalitis, meningoencephalitis and meningitis vary substantially. We aimed to identify the most frequent causes, clinical presentation and long-term outcome of encephalitis, meningoencephalitis and meningitis cases treated in the Inselspital University Hospital Bern, Switzerland. Methods In this monocentric, observational study, we performed a retrospective review of clinical patient records for all patients treated within a 3-year period. Patients were contacted for a telephone follow-up interview and to fill out questionnaires, especially related to disturbances of sleep and wakefulness. Results We included 258 patients with the following conditions: encephalitis (18%), nonbacterial meningoencephalitis (42%), nonbacterial meningitis (27%) and bacterial meningoencephalitis/meningitis (13%). Herpes simplex virus (HSV) was the most common cause of encephalitis (18%); tick-borne encephalitis virus (TBEV) was the most common cause of nonbacterial meningoencephalitis (46%), enterovirus was the most common cause of nonbacterial meningitis (21%) and Streptococcus pneumoniae was the most common cause of bacterial meningoencephalitis/meningitis (49%). Overall, 35% patients remained without a known cause. After a median time of 16 months, 162 patients participated in the follow-up interview; 56% reported suffering from neurological long-term sequelae such as fatigue and/or excessive daytime sleepiness (34%), cognitive impairment and memory deficits (22%), headache (14%) and epileptic seizures (11%). Conclusions In the Bern region, Switzerland, TBEV was the overall most frequently detected infectious cause, with a clinical manifestation of meningoencephalitis in the majority of cases. Long-term neurological sequelae, most importantly cognitive impairment, fatigue and headache, were frequently self-reported not only in encephalitis and meningoencephalitis survivors but also in viral meningitis survivors up to 40 months after acute infection. Supplementary Information The online version contains supplementary material available at 10.1186/s12883-021-02502-3.
Collapse
Affiliation(s)
- Anamaria Ungureanu
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | - Julia van der Meer
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | - Antonela Bicvic
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | - Lena Abbuehl
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | - Gabriele Chiffi
- Institute for Infectious Disease, University of Bern, Bern, Switzerland
| | - Léonore Jaques
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | | | - Stephen L Leib
- Institute for Infectious Disease, University of Bern, Bern, Switzerland
| | - Claudio L A Bassetti
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland
| | - Anelia Dietmann
- Department of Neurology, University Hopsital and University of Bern, Inselspital, Bern, Switzerland.
| |
Collapse
|
34
|
Cengiz AB, Günbey C, Ceyhan M, Korukluoğlu G, Tanır Başaranoğlu S, Eroğlu Ertuğrul NG, Coşgun Y, Konuşkan B, Özsürekci Y, Anlar B. Etiological and Clinical Profile of Acute Nonbacterial Encephalitis in Children: A Single-Center Prospective Study. Neuropediatrics 2021; 52:448-454. [PMID: 33578438 DOI: 10.1055/s-0041-1723954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Encephalitis is a serious neurological syndrome caused by inflammation of the brain. The diagnosis can be challenging and etiology remains unidentified in about half of the pediatric cases. We aimed to investigate demographic, clinical, laboratory, electroencephalographic and neuroimaging findings, and outcome of acute encephalitis of nonbacterial etiology. This prospective study included children hospitalized with the diagnosis of acute encephalitis between 2017 and 2019. Microbiological investigations of the cerebrospinal fluid (CSF) were recorded. All CSF specimens were tested for anti-N methyl D-aspartate receptor (NMDAR) antibodies. In total, 31 children aged 10 months to 17 years (median = 6 years) were included. Pathogens were confirmed in CSF in three patients (9.7%): varicella zoster virus, herpes simplex virus type 1 (HSV-1), and both HSV-1 and NMDAR antibodies. Presenting features included encephalopathy (100%), fever (80.6%), seizure (45.2%), focal neurological signs (29%), and ataxia (19.4%). On clinical follow-up of median 9 (6-24) months, six patients showed neurological deficits: together with two patients who died in hospital, total eight (25.8%) patients were considered to have unfavorable outcome. Need for intubation, receiving immunomodulatory treatment, prolonged hospitalization, and high erythrocyte sedimentation rate at admission were associated with unfavorable outcome. The etiology of encephalitis remains unexplained in the majority of children. HSV-1 is the most frequently detected virus, consistent with the literature. The fact that anti-NMDAR encephalitis was detected in one child suggests autoimmune encephalitis not being rare in our center. The outcome is favorable in the majority while about one-fifth of cases suffer from sequelae.
Collapse
Affiliation(s)
- Ali Bülent Cengiz
- Department of Pediatric Infectious Diseases, Hacettepe University Medical Faculty, Ankara, Turkey
| | - Ceren Günbey
- Department of Pediatric Neurology, Hacettepe University Medical Faculty, Ankara, Turkey
| | - Mehmet Ceyhan
- Department of Pediatric Infectious Diseases, Hacettepe University Medical Faculty, Ankara, Turkey
| | | | - Sevgen Tanır Başaranoğlu
- Department of Pediatric Infectious Diseases, Hacettepe University Medical Faculty, Ankara, Turkey
| | | | - Yasemin Coşgun
- Department of Virology, Public Health Institution, Ankara, Turkey
| | - Bahadır Konuşkan
- Department of Pediatric Neurology, Hacettepe University Medical Faculty, Ankara, Turkey
| | - Yasemin Özsürekci
- Department of Pediatric Infectious Diseases, Hacettepe University Medical Faculty, Ankara, Turkey
| | - Banu Anlar
- Department of Pediatric Neurology, Hacettepe University Medical Faculty, Ankara, Turkey
| |
Collapse
|
35
|
Lee GH, Kim J, Kim HW, Cho JW. Herpes simplex viruses (1 and 2) and varicella-zoster virus infections in an adult population with aseptic meningitis or encephalitis: A nine-year retrospective clinical study. Medicine (Baltimore) 2021; 100:e27856. [PMID: 34797322 PMCID: PMC8601327 DOI: 10.1097/md.0000000000027856] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 11/01/2021] [Indexed: 01/05/2023] Open
Abstract
Three α-herpesviruses are known to be associated with central nervous system (CNS) infection; however, there are limited data on the incidence and clinical characteristics of α-herpesviruses CNS infections. This study aimed to assess the clinical manifestations, laboratory findings, and outcomes in patients with human herpes simplex virus 1 (HSV-1), human herpes simplex virus 2 (HSV-2), and varicella-zoster virus (VZV) CNS infections.We identified cases of HSV-1, HSV-2, and VZV CNS infections and reviewed their clinical and laboratory characteristics. The study population was drawn from patients with HSV-1, HSV-2, and VZV polymerase chain reaction positivity in cerebrospinal fluid (CSF) who visited Pusan National University Hospital between 2010 and 2018.During the 9-year study period, a total of 727 CSF samples were examined, with 72.2% (525/727) patients identified as having a CNS infection. Of 471 patients with aseptic meningitis and encephalitis, the causative virus was identified in 145 patients, and no virus was detected in 337 patients. A total of 15.2% (80/525) were diagnosed with one of the 3 herpesviruses as causative agents, 59 patients had meningitis, and 21 patients had encephalitis. Eleven patients with HSV-1, 27 patients with HSV-2, and 42 patients with VZV CNS infections were included. The distribution of cases by age showed different patterns depending on the type of herpesvirus infection. Compared with the HSV-1 group, the median age in the HSV-2 group was younger (HSV-1: 58 years; HSV-2: 38 years; P = .004), and patients with VZV infections showed a bimodal age distribution. Encephalitis was more common in the HSV-1 group, and HSV-1 infection was associated with a poor prognosis at discharge. CSF white blood cell counts were significantly lower in patients infected with HSV-1 (117 × 106 cells/L) than in patients infected with VZV (301 × 106 cells/L) (P = .008).These 3 herpesviruses are important causes of CNS infections regardless of immunologic status. HSV-1 infection was commonly associated with encephalitis and poor prognosis; HSV-2 and VZV CNS infections were associated with a low risk of mortality and neurological sequelae.
Collapse
Affiliation(s)
- Gha-Hyun Lee
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Jiyoung Kim
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun-Woo Kim
- Department of Neurology, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Republic of Korea
| | - Jae Wook Cho
- Department of Neurology, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Republic of Korea
| |
Collapse
|
36
|
Gao D, Hu Y, Jiang X, Pu H, Guo Z, Zhang Y. Applying the pathogen-targeted next-generation sequencing method to pathogen identification in cerebrospinal fluid. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1675. [PMID: 34988184 PMCID: PMC8667110 DOI: 10.21037/atm-21-5488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/22/2021] [Indexed: 11/10/2022]
Abstract
Background The cerebrospinal fluid (CSF) culture is a widely used method for the diagnosis of meningitis, but its detection sensitivity is low. Several new methods have been developed for pathogen detection, including metagenomic next-generation sequencing (mNGS) and pathogen-targeted NGS (ptNGS). In this study, we aimed to evaluate the performance of ptNGS in pathogen detection in CSF. Methods CSF specimens were acquired from 38 patients with meningitis who were diagnosed at Xuanwu Hospital, Capital Medical University between October 2020 and February 2021. DNA was extracted from the CSF samples, and pathogens were identified using both ptNGS and mNGS. SPSS 22.0 software was used to compare the pathogen detection performance of ptNGS and mNGS in CSF. Results Among the 38 patients with meningitis, 14 had a non-infectious disease (NID) and 24 had an infectious disease (ID). Of the 38 samples, both ptNGS and mNGS detected 9 (23.7%) positive samples, and 12 (31.6%) negative samples. Thirteen (34.2%) samples were detected to be positive by ptNGS only, and 4 (10.5%) were detected to be positive by mNGS only. The positivity rate detected by ptNGS for the ID group was higher than that detected by mNGS (P=0.080), and the positivity rates detected by ptNGS and mNGS for the NID group were comparable. The positive predictive value (PPV) and negative predictive value (NPV) of diagnosing an ID by ptNGS were 77.3% and 56.3%, respectively. While, the PPV and NPV of diagnosing an ID by mNGS were 76.9% and 44.0%, respectively. ptNGS increased the sensitivity rate by approximately 70%. The sensitivity rate of ptNGS was higher than that of mNGS (70.8% vs. 41.7%), while the specificity rate of mNGS was higher than that of ptNGS (78.6% vs. 64.3%). Additionally, ptNGS required a shorter time for pathogen diagnosis (15 vs. 24 hrs) and had lower costs than mNGS. Conclusions ptNGS has a number of advantages over mNGS, including its sensitivity, timeliness, and economy, all factors that are important considerations in clinical use.
Collapse
Affiliation(s)
- Daiquan Gao
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yongqiang Hu
- Department of Critical Care Medicine, Beijing Fengtai You'anmen Hospital, Beijing, China
| | - Xuebin Jiang
- Intensive Care Unit, Renhe Hospital, Beijing, China
| | - Hao Pu
- Department of Science and Technology, Shanghai Pathogeno Medical Technology Co., Ltd., Shanghai, China
| | - Zhendong Guo
- Department of Science and Technology, Shanghai Pathogeno Medical Technology Co., Ltd., Shanghai, China
| | - Yunzhou Zhang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| |
Collapse
|
37
|
Bodilsen J, Larsen L, Brandt CT, Wiese L, Hansen BR, Andersen CØ, Lüttichau HR, Helweg-Larsen J, Storgaard M, Nielsen H. Existing Data Sources for Clinical Epidemiology: The Danish Study Group of Infections of the Brain Database (DASGIB). Clin Epidemiol 2021; 13:921-933. [PMID: 34675681 PMCID: PMC8500496 DOI: 10.2147/clep.s326461] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/27/2021] [Indexed: 11/29/2022] Open
Abstract
Central nervous system (CNS) infections are rare diseases that are associated with considerable morbidity and mortality. Increased knowledge based on contemporary data is a prerequisite for improved management and prevention of these serious conditions. Yet, population-based databases of patients hospitalized with CNS infections remain scarce. The Danish Study Group of Infections of the Brain (DASGIB) has prospectively registered information on all adults ≥18 years of age admitted with CNS infections at departments of infectious diseases in Denmark since 2015. The main variables collected are baseline demographics, blood and cerebrospinal fluid tests, imaging results, and outcome using the Glasgow Outcome Scale score. To investigate important aspects for each type of CNS infections, additional variables are included specifically for bacterial meningitis, viral meningitis, encephalitis, brain abscess, neurosyphilis, and Lyme neuroborreliosis. From 2015 to 2020, a total of 3579 cases of CNS infections have been recorded in the DASGIB database. Using the unique civil registration number assigned to all Danish residents, the database can be unambiguously linked with nationwide healthcare registries at the individual level. This enables researchers to conduct detailed population-based and longitudinal observational studies of risk and prognosis of CNS infections and to compare them with matched population cohorts. The database is well-suited for epidemiological research and the DASGIB network forms a solid infrastructure for future national and international collaborations.
Collapse
Affiliation(s)
- Jacob Bodilsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, 9000, Denmark
| | - Lykke Larsen
- Department of Infectious Diseases, Odense University Hospital, Odense, 5000, Denmark
| | - Christian Thomas Brandt
- Department of Infectious Diseases, Nordsjællands Hospital, Hillerød, 3400, Denmark.,Department of Infectious Diseases, Sjælland University Hospital, Roskilde, 4000, Denmark
| | - Lothar Wiese
- Department of Infectious Diseases, Sjælland University Hospital, Roskilde, 4000, Denmark
| | - Birgitte Rønde Hansen
- Department of Infectious Diseases, Hvidovre University Hospital, Copenhagen, 2650, Denmark
| | | | - Hans Rudolf Lüttichau
- Department of Infectious Diseases, Herlev Gentofte Hospital, Copenhagen, 2730, Denmark
| | | | - Merete Storgaard
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, 8200, Denmark
| | - Henrik Nielsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, 9000, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, 9000, Denmark
| |
Collapse
|
38
|
Histopathology of new-onset refractory status epilepticus (NORSE) in adults. Seizure 2021; 93:95-101. [PMID: 34740145 DOI: 10.1016/j.seizure.2021.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE new-onset refractory status epilepticus (NORSE) is defined as de novo refractory seizures occurring in previously healthy adults, without a clear underlying etiology. Due to refractory seizures and insufficient understanding of pathophysiology, management of these patients remains challenging and often leads to poor clinical outcomes. Various infectious and autoimmune mechanisms have been proposed but have not been validated and a large number of patients are thus labeled 'cryptogenic'. Moreover, histopathological findings have rarely been described in NORSE and are usually autopsy evaluations. In this paper, we describe the clinical correlates and histopathological findings in patients presenting with NORSE. METHODS A case series of five patients with NORSE who underwent neurosurgical intervention and had histopathological examination during their acute clinical course. RESULTS In all patients,status epileptics was refractory to treatment with antiseizure drugs (ASDs) and anesthetic agents. Autoimmune work-up revealed elevated titer of anti-GAD antibody in one patient but was unremarkable in others. Empiric use of immunomodulation therapy in three patients did not lead to cessation of status epilepticus (SE). Due to failure of prolonged medical management, three patients underwent palliative surgery for resection of epileptogenic tissue whereas the other two had diagnostic brain biopsy. Histopathology obtained during biopsy revealed evidence of vasculitis in one and necrotizing vasculopathy in another. The patient with anti-GAD antibodies had evidence of lymphocytic infiltration in limbic structures. The remaining two had nonspecific histopathological findings. SIGNIFICANCE Although our findings are limited by a small number of patients, it adds to the growing premise of NORSE being related to an underlying autoimmune process. Additional studies, especially with histopathological data are needed to better understand this devastating disorder.
Collapse
|
39
|
Miller AC, Koeneman SH, Arakkal AT, Cavanaugh JE, Polgreen PM. Incidence, Duration, and Risk Factors Associated With Missed Opportunities to Diagnose Herpes Simplex Encephalitis: A Population-Based Longitudinal Study. Open Forum Infect Dis 2021; 8:ofab400. [PMID: 34514018 PMCID: PMC8415533 DOI: 10.1093/ofid/ofab400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/25/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Delays in diagnosing herpes simplex encephalitis (HSE) are associated with increased morbidity and mortality. The purpose of this paper is to determine the frequency and duration of diagnostic delays for HSE and risk factors for diagnostic delays. METHODS Using data from the IBM Marketscan Databases, 2001-2017, we performed a retrospective cohort study of patients with HSE. We estimated the number of visits with HSE-related symptoms before diagnosis that would be expected to occur in the absence of delays and compared this estimate to the observed pattern of visits. Next, we used a simulation-based approach to compute the number of visits representing a delay, the number of missed diagnostic opportunities per case patient, and the duration of delays. We also investigated potential risk factors for delays. RESULTS We identified 2667 patients diagnosed with HSE. We estimated 45.9% (95% confidence interval [CI], 43.6%-48.1%) of patients experienced at least 1 missed opportunity; 21.9% (95% CI, 17.3%-26.3%) of these patients had delays lasting >7 days. Risk factors for delays included being seen only in the emergency department, age <65, or a history of sinusitis or schizophrenia. CONCLUSIONS Many patients with HSE experience multiple missed diagnostic opportunities before diagnosis.
Collapse
Affiliation(s)
- Aaron C Miller
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Scott H Koeneman
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Alan T Arakkal
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Joseph E Cavanaugh
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa, USA
| | - Philip M Polgreen
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA
- Division of Infectious Diseases, Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| |
Collapse
|
40
|
Piantadosi A, Mukerji SS, Ye S, Leone MJ, Freimark LM, Park D, Adams G, Lemieux J, Kanjilal S, Solomon IH, Ahmed AA, Goldstein R, Ganesh V, Ostrem B, Cummins KC, Thon JM, Kinsella CM, Rosenberg E, Frosch MP, Goldberg MB, Cho TA, Sabeti P. Enhanced Virus Detection and Metagenomic Sequencing in Patients with Meningitis and Encephalitis. mBio 2021; 12:e0114321. [PMID: 34465023 PMCID: PMC8406231 DOI: 10.1128/mbio.01143-21] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/02/2021] [Indexed: 01/21/2023] Open
Abstract
Meningitis and encephalitis are leading causes of central nervous system (CNS) disease and often result in severe neurological compromise or death. Traditional diagnostic workflows largely rely on pathogen-specific tests, sometimes over days to weeks, whereas metagenomic next-generation sequencing (mNGS) profiles all nucleic acid in a sample. In this single-center, prospective study, 68 hospitalized patients with known (n = 44) or suspected (n = 24) CNS infections underwent mNGS from RNA and DNA to identify potential pathogens and also targeted sequencing of viruses using hybrid capture. Using a computational metagenomic classification pipeline based on KrakenUniq and BLAST, we detected pathogen nucleic acid in cerebrospinal fluid (CSF) from 22 subjects, 3 of whom had no clinical diagnosis by routine workup. Among subjects diagnosed with infection by serology and/or peripheral samples, we demonstrated the utility of mNGS to detect pathogen nucleic acid in CSF, importantly for the Ixodes scapularis tick-borne pathogens Powassan virus, Borrelia burgdorferi, and Anaplasma phagocytophilum. We also evaluated two methods to enhance the detection of viral nucleic acid, hybrid capture and methylated DNA depletion. Hybrid capture nearly universally increased viral read recovery. Although results for methylated DNA depletion were mixed, it allowed the detection of varicella-zoster virus DNA in two samples that were negative by standard mNGS. Overall, mNGS is a promising approach that can test for multiple pathogens simultaneously, with efficacy similar to that of pathogen-specific tests, and can uncover geographically relevant infectious CNS disease, such as tick-borne infections in New England. With further laboratory and computational enhancements, mNGS may become a mainstay of workup for encephalitis and meningitis. IMPORTANCE Meningitis and encephalitis are leading global causes of central nervous system (CNS) disability and mortality. Current diagnostic workflows remain inefficient, requiring costly pathogen-specific assays and sometimes invasive surgical procedures. Despite intensive diagnostic efforts, 40 to 60% of people with meningitis or encephalitis have no clear cause of CNS disease identified. As diagnostic uncertainty often leads to costly inappropriate therapies, the need for novel pathogen detection methods is paramount. Metagenomic next-generation sequencing (mNGS) offers the unique opportunity to circumvent these challenges using unbiased laboratory and computational methods. Here, we performed comprehensive mNGS from 68 prospectively enrolled patients with known (n = 44) or suspected (n = 24) CNS viral infection from a single center in New England and evaluated enhanced methods to improve the detection of CNS pathogens, including those not traditionally identified in the CNS by nucleic acid detection. Overall, our work helps elucidate how mNGS can become integrated into the diagnostic toolkit for CNS infections.
Collapse
Affiliation(s)
- Anne Piantadosi
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Emory University School of Medicine, Atlanta, Georgia, USA
| | - Shibani S. Mukerji
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Simon Ye
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Harvard-MIT Program of Health Sciences and Technology, Cambridge, Massachusetts, USA
| | - Michael J. Leone
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Lisa M. Freimark
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Daniel Park
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Gordon Adams
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jacob Lemieux
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Sanjat Kanjilal
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Isaac H. Solomon
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Asim A. Ahmed
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Children’s Hospital, Boston, Massachusetts, USA
| | - Robert Goldstein
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Vijay Ganesh
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Neurology, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Bridget Ostrem
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Kaelyn C. Cummins
- Division of Infectious Diseases, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Jesse M. Thon
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Cormac M. Kinsella
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Eric Rosenberg
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Matthew P. Frosch
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Marcia B. Goldberg
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Tracey A. Cho
- Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- University of Iowa, Department of Neurology, Iowa City, Iowa, USA
| | - Pardis Sabeti
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
- Department of Immunology and Infectious Disease, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| |
Collapse
|
41
|
Le Maréchal M, Mailles A, Seigneurin A, Tattevin P, Stahl JP, Épaulard O. A Prospective Cohort Study to Identify Clinical, Biological, and Imaging Features That Predict the Etiology of Acute Encephalitis. Clin Infect Dis 2021; 73:264-270. [PMID: 32433723 DOI: 10.1093/cid/ciaa598] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/19/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND New diagnostic tools have been developed to improve the diagnosis of infectious encephalitis. Using a prospective cohort of encephalitis patients, our objective was to identify possible clusters of patients with similar patterns among encephalitis of unknown cause (EUC) and to describe to what extent a patient's initial presentation may be predictive of encephalitis etiology, particularly herpes simplex virus (HSV) and varicella-zoster virus (VZV). METHODS The National Cohort of Infectious Encephalitis in France is an ongoing prospective cohort study implemented in France in 2016. Patients who present with documented or suspected acute infectious encephalitis were included. Focusing on the variables that describe the initial presentation, we performed a factor analysis of mixed data (FAMD) to investigate a pattern of association between the initial presentation of a patient and the etiologic pathogen. RESULTS As of 1 August 2018, data from 349 patients were analyzed. The most frequent pathogens were HSV (25%), VZV (11%), tick-borne encephalitis virus (6%), Listeria (5%), influenza virus (3%), and EUC (34%). Using the FAMD, it was not possible to identify a specific pattern related to the group of EUC. Age, temporal or hemorrhagic lesions, and cerebral spinal fluid lymphocytosis were significantly associated with HSV/VZV encephalitis. CONCLUSIONS No initial clinical/imaging/biology pattern was identified at admission among EUC, despite the improvement in diagnostic tools. In this context, the recommendation for a universal, early, probabilistic, initial treatment against HSV and VZV is still relevant, regardless of the initial clinical presentation of the encephalitis.
Collapse
Affiliation(s)
- Marion Le Maréchal
- Maladies infectieuses, CHUGA, Grenoble, France.,ESCMID Study Group on Infections of the Brain, Saint Maurice, France
| | - Alexandra Mailles
- ESCMID Study Group on Infections of the Brain, Saint Maurice, France.,Santé Publique France, direction des maladies infectieuses, Saint Maurice, France
| | - Arnaud Seigneurin
- Service d'évaluation médicale, Pôle Santé Publique, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France.,Université Grenoble Alpes, Laboratoire Techniques de l'Ingénierie Médicale et de la Complexité-Informatique Mathématiques et Applications, Grenoble, France
| | - Pierre Tattevin
- ESCMID Study Group on Infections of the Brain, Saint Maurice, France.,Maladies Infectieuses, CHU Rennes, France
| | - Jean-Paul Stahl
- Maladies infectieuses, CHUGA, Grenoble, France.,ESCMID Study Group on Infections of the Brain, Saint Maurice, France
| | - Olivier Épaulard
- Maladies infectieuses, CHUGA, Grenoble, France.,ESCMID Study Group on Infections of the Brain, Saint Maurice, France.,Team "HIV and Other Persistent Human Viruses," Institut de Biologie Structurale, Grenoble, France
| |
Collapse
|
42
|
Characterization of the Blood and Cerebrospinal Fluid Microbiome in Children with Bacterial Meningitis and Its Potential Correlation with Inflammation. mSystems 2021; 6:e0004921. [PMID: 34100633 PMCID: PMC8269202 DOI: 10.1128/msystems.00049-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bacterial meningitis shows a higher incidence in children than adults, but signs may be scarce. Although some pathogenic microorganisms of meningitis from cerebrospinal fluid (CSF) have been reported, the signature of the representative microbiota in CSF and blood samples from patients remains incompletely revealed. To extend the understanding of the microbiome in patients, we recruited 32 children with bacterial meningitis, 30 undiagnosed infectious children, and 10 matched healthy individuals, which was followed by untargeted metagenomic next-generation sequencing (mNGS) and bioinformatic analysis. Our results showed that children with bacterial meningitis exhibited different microbiome signatures in their CSF and blood compared with undiagnosed and healthy children, and patients could be divided into varied subsets according to these signatures, including Escherichia coli, Klebsiella pneumoniae, Thermothelomyces thermophila, Lactobacillus acidophilus, and Staphylococcus haemolyticus. To further explore their potential role in patients’ conditions, we examined their correlation with clinical parameters. Importantly, microbiome signatures with compositional changes were correlated with the C-reactive protein (CRP) level in blood and granulocyte percentage in CSF. Moreover, the blood in subsets of patients with a predominance of Klebsiella pneumoniae could replace CSF as the main specimen for clinical monitoring. IMPORTANCE This study revealed the microbial compositions in children with bacterial meningitis who were treated with antibiotics and made a comprehensive comparison between blood and CSF specimens for the risk and prognosis assessment. We found that microbiome signatures could distinguish patient subsets in the children and were correlated with the CRP level in blood and granulocyte percentage in CSF. The compositional changes in representative microbiota constituents could provide guidance for clinical monitoring and antibiotic intervention.
Collapse
|
43
|
Garcia E, Fajardo QF, Figueroa R, Chavarría V, Castañeda AV, Salazar A, de la Cruz VP, Sotelo J, Pineda B. Herpesvirus encephalitis diagnosed by polymerase chain reaction at the National Institute of Neurology of Mexico. J Neurovirol 2021; 27:397-402. [PMID: 33830465 DOI: 10.1007/s13365-020-00839-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/28/2020] [Accepted: 03/31/2020] [Indexed: 11/27/2022]
Abstract
The frequency of central nervous system infections due to herpesvirus have been studied in various populations; however, studies in Mexican mestizo patients are scant. This paper documents the frequency of herpesvirus encephalitis in Mexican mestizo patients from the National Institute of Neurology and Neurosurgery (NINN) of Mexico. To study the frequency of herpetic viral encephalitis at the NINN in the period from 2004 to 2009. We reviewed clinical records from patients with clinically suspected encephalitis; polymerase chain reaction assays were done for detection of herpesviruses in cerebrospinal fluid (CSF) samples. The total number of patients studied was 502; in 59 (12%), the diagnosis of herpetic encephalitis was confirmed by PCR-based testing of CSF. Of them, 21 (36%) were positive for herpes simplex virus type 1, 15 (25%) for Epstein-Barr virus, 10 (17%) for varicella zoster virus, 8 (14%) for cytomegalovirus, 3 (5%) for human herpesvirus 6, and 2 (3%) for herpes simplex virus 2. Our results show a varied frequency of viral encephalitis in mestizo patients due to herpesviruses in a tertiary neurological center and point out the importance of modern molecular technology to reach the etiological diagnosis in cases of encephalitis.
Collapse
Affiliation(s)
- Esperanza Garcia
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico
| | | | - Rubén Figueroa
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico
| | - Víctor Chavarría
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico
| | | | - Aleli Salazar
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico
| | - Verónica Pérez de la Cruz
- Neurobiochemistry laboratory, National Institute of Neurology and Neurosurgery (NINN), Mexico City, Mexico
| | - Julio Sotelo
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico
| | - Benjamín Pineda
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery of Mexico (NINN), Insurgentes sur 3877, 14269, Mexico City, Mexico.
| |
Collapse
|
44
|
Krishnan P, Glenn OA, Samuel MC, Sheriff H, Foster-Barber A, Sejvar JJ, Roy-Burman A, Wadford DA, Preas CP, Tureen JH, Glaser CA. Acute Fulminant Cerebral Edema: A Newly Recognized Phenotype in Children With Suspected Encephalitis. J Pediatric Infect Dis Soc 2021; 10:289-294. [PMID: 32667036 DOI: 10.1093/jpids/piaa063] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 05/20/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Encephalitis is a severe neurological syndrome associated with significant morbidity and mortality. The California Encephalitis Project (CEP) enrolled patients for more than a decade. A subset of patients with acute and fulminant cerebral edema was noted. METHODS All pediatric encephalitis patients with cerebral edema referred to the CEP between 1998 and 2012 were reviewed. A case definition was developed for acute fulminant cerebral edema (AFCE) that included the CEP case definition for encephalitis and progression to diffuse cerebral edema on neuroimaging and/or autopsy, and no other recognized etiology for cerebral edema (eg, organic, metabolic, toxin). Prodromic features, demographic and laboratory data, neuroimaging, and outcomes were compared with non-AFCE encephalitis cases. RESULTS Of 1955 pediatric cases referred to the CEP, 30 (1.5%) patients met the AFCE case definition. The median age for AFCE and non-AFCE cases was similar: 8.2 years (1-18 years) and 8.0 years (0.5-18 years), respectively. Asian-Pacific Islanders comprised a larger proportion of AFCE cases (44%) compared with non-AFCE cases (14%, P < .01). AFCE cases often had a prodrome of high fever, vomiting, and profound headache. Mortality among AFCE patients was significantly higher than among non-AFCE patients (80% vs 13%, P < .01). A confirmed etiology was identified in only 2 cases (enterovirus, human herpes virus type 6), while 10 others had evidence of a respiratory pathogen.Thirty pediatric patients referred to the California Encephalitis Project with a unique, and often fatal, form of encephalitis are reported. Demographic and clinical characteristics, possible etiologies and a proposed case definition for acute fulminant cerebral edema (AFCE) are described. CONCLUSIONS AFCE is a recently recognized phenotype of encephalitis with a high mortality. AFCE may be triggered by common pediatric infections. Here, we propose a case definition.
Collapse
Affiliation(s)
- Preetha Krishnan
- Pediatric Critical Care Medicine, Randall Children's Hospital, Portland, Oregon, USA
| | - Orit A Glenn
- Department of Radiology, University of California-San Francisco, San Francisco, California, USA
| | - Michael C Samuel
- California Department of Public Health, Richmond, California, USA
| | - Heather Sheriff
- Viral and Rickettsial Disease Laboratory, California Department of Public Health, Richmond, California, USA
| | - Audrey Foster-Barber
- Department of Neurology, Benioff Children's Hospital, University of California-San Francisco, San Francisco, California, USA
| | - James J Sejvar
- Division of High Consequence Pathogens and Pathology, National Center for Emerging Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Arup Roy-Burman
- Univeristy of California-San Francisco, San Francisco, California, USA
| | - Debra A Wadford
- Viral and Rickettsial Disease Laboratory, California Department of Public Health, Richmond, California, USA
| | - Christopher P Preas
- Viral and Rickettsial Disease Laboratory, California Department of Public Health, Richmond, California, USA
| | - Jay H Tureen
- Department of Pediatrics, University of California-San Francisco, San Francisco, California, USA
| | - Carol A Glaser
- Pediatric Infectious Diseases, Kaiser Permanente, Oakland, California, USA
| |
Collapse
|
45
|
Erdem G, Kaptsan I, Sharma H, Kumar A, Aylward SC, Kapoor A, Shimamura M. Cerebrospinal Fluid Analysis for Viruses by Metagenomic Next-Generation Sequencing in Pediatric Encephalitis: Not Yet Ready for Prime Time? J Child Neurol 2021; 36:350-356. [PMID: 33206020 DOI: 10.1177/0883073820972232] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Metagenomic next-generation sequencing offers an unbiased approach to identifying viral pathogens in cerebrospinal fluid of patients with meningoencephalitis of unknown etiology. METHODS In an 11-month case series, we investigated the use of cerebrospinal fluid metagenomic next-generation sequencing to diagnose viral infections among pediatric hospitalized patients presenting with encephalitis or meningoencephalitis of unknown etiology. Cerebrospinal fluid from patients with known enterovirus meningitis were included as positive controls. Cerebrospinal fluid from patients with primary intracranial hypertension were included to serve as controls without known infections. RESULTS Cerebrospinal fluid metagenomic next-generation sequencing was performed for 37 patients. Among 27 patients with encephalitis or meningoencephalitis, 4 were later diagnosed with viral encephalitis, 6 had non-central nervous system infections with central nervous system manifestations, 6 had no positive diagnostic tests, and 11 were found to have a noninfectious diagnosis. Metagenomic next-generation sequencing identified West Nile virus (WNV) in the cerebrospinal fluid of 1 immunocompromised patient. Among the 4 patients with known enterovirus meningitis, metagenomic next-generation sequencing correctly identified enteroviruses and characterized the viral genotype. No viral sequences were detected in the cerebrospinal fluid of patients with primary intracranial hypertension. Metagenomic next-generation sequencing also identified sequences of nonpathogenic torque Teno virus in cerebrospinal fluid specimens from 13 patients. CONCLUSIONS Our results showed viral detection by cerebrospinal fluid metagenomic next-generation sequencing only in 1 immunocompromised patient and did not offer a diagnostic advantage over conventional testing. Viral phylogenetic characterization by metagenomic next-generation sequencing could be used in epidemiologic investigations of some viral pathogens, such as enteroviruses. The finding of torque Teno viruses in cerebrospinal fluid by metagenomic next-generation sequencing is of unknown significance but may merit further exploration for a possible association with noninfectious central nervous system disorders.
Collapse
Affiliation(s)
- Guliz Erdem
- Division of Infectious Diseases, Department of Pediatrics, 2650Nationwide Children's Hospital and The Ohio State University, Columbus, OH, USA
| | - Irina Kaptsan
- Center for Vaccines and Immunity, the Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Himanshu Sharma
- Center for Vaccines and Immunity, the Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Arvind Kumar
- Center for Vaccines and Immunity, the Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Shawn C Aylward
- Division of Neurology, Department of Pediatrics, 2650Nationwide Children's Hospital and The Ohio State University, Columbus, OH, USA
| | - Amit Kapoor
- Center for Vaccines and Immunity, the Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Masako Shimamura
- Division of Infectious Diseases, Department of Pediatrics, 2650Nationwide Children's Hospital and The Ohio State University, Columbus, OH, USA.,Center for Vaccines and Immunity, the Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| |
Collapse
|
46
|
Taravaud A, Fechtali-Moute Z, Loiseau PM, Pomel S. Drugs used for the treatment of cerebral and disseminated infections caused by free-living amoebae. Clin Transl Sci 2021; 14:791-805. [PMID: 33650319 PMCID: PMC8212752 DOI: 10.1111/cts.12955] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/25/2020] [Accepted: 11/25/2020] [Indexed: 01/29/2023] Open
Abstract
Free‐living amoebae (FLAs) are protozoa developing autonomously in diverse natural or artificial environments. The FLAs Acanthamoeba spp., Balamuthia mandrillaris, and Naegleria fowleri represent a risk for human health as they can become pathogenic and cause severe cerebral infections, named granulomatous amoebic encephalitis (GAE), Balamuthia amoebic encephalitis (BAE), and primary amoebic meningoencephalitis (PAM), respectively. Additionally, Acanthamoeba sp. can also rarely disseminate to diverse organs, such as the skin, sinuses, or bones, and cause extracerebral disseminated acanthamebiasis (EDA). No consensus treatment has been established for cerebral FLA infections or EDA. The therapy of cerebral and disseminated FLA infections often empirically associates a large diversity of drugs, all exhibiting a high toxicity. Nevertheless, these pathologies lead to a high mortality, above 90% of the cases, even in the presence of a treatment. In the present work, a total of 474 clinical cases of FLA infections gathered from the literature allowed to determine the frequency of usage, as well as the efficacy of the main drugs and drug combinations used in the treatment of these pathologies. The efficacy of drug usage was determined based on the survival rate after drug administration. The most efficient drugs, drug combinations, and their mechanism of action were discussed in regard to the present recommendations for the treatment of GAE, EDA, BAE, and PAM. At the end, this review aims to provide a useful tool for physicians in their choice to optimize the treatment of FLA infections.
Collapse
Affiliation(s)
- Alexandre Taravaud
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Zineb Fechtali-Moute
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Philippe M Loiseau
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Sébastien Pomel
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| |
Collapse
|
47
|
Epidemiology, Etiology and Clinical Aspects of Childhood Acute Encephalitis in a Tertiary Pediatric Hospital in Costa Rica. Pediatr Infect Dis J 2021; 40:186-190. [PMID: 33060517 DOI: 10.1097/inf.0000000000002950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Limited data are available on childhood encephalitis in Latin America. Our study aimed to increase insight on clinical presentation, etiology and outcome of children with acute encephalitis in Costa Rica. METHODS We conducted a prospective, observational study during an 8-month period at the Hospital Nacional de Niños "Dr. Carlos Sáenz Herrera" in Costa Rica. Case definition was according to "International Encephalitis Consortium" in children <13 years. We analyzed demographic characteristics, clinical symptoms, neurologic imaging, etiology, treatment and mortality. RESULTS Forty patients were identified. Mean age was 5 years and 57.5% were male. Most frequently neurologic symptoms were altered mental status (100.0%), headache (57.5%) and seizures (52.5%). Etiology was determined in 52.5% of cases. Probable or confirmed viral etiology was identified in 6 cases (15.0%) and bacterial etiology in also 6 cases (15.0%). A possible etiology was identified in 7 cases (17.5%). Autoimmune encephalitis was diagnosed in 2 patients (5.0%). Enterovirus and Streptococcus pneumoniae were the most common confirmed agents. No cases of herpes simplex virus were found. Etiology of 19 cases (47.5%) remained unknown. Sequelae were reported in 45.0% of patients. Mortality rate was 15.0% (6 cases), 3 caused by virus (adenovirus, human herpesvirus 6, enterovirus), 2 by bacteria (S. pneumoniae, Haemophilus influenzae type b) and 1 of unknown etiology. Diffuse cerebral edema was the most important mortality predictor (P < 0.001). CONCLUSIONS Acute encephalitis in our study was associated with significant morbidity and mortality. Early and aggressive antiviral, antibiotic and anticerebral edema treatment is necessary when acute encephalitis is suspected.
Collapse
|
48
|
Allana A, Samannodi M, Hansen MA, DeSantis S, Ho LT, Hasbun R. Adjunctive steroids in adults with encephalitis: a propensity score analysis. J Neurol 2021; 268:2151-2160. [PMID: 33475823 DOI: 10.1007/s00415-021-10398-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 01/02/2021] [Accepted: 01/04/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Adjuvant steroids have been used for the treatment of encephalitis, although there is limited data regarding its benefit. We described the use and impact of adjunctive steroids on adverse clinical outcomes (ACO) in adults with encephalitis. METHODS Retrospective observational study of 230 adults with encephalitis at two tertiary care hospital systems in Houston, Texas, between August 2008 and September 2017. An ACO was assessed at the time of death or discharge and defined as a Glasgow Outcome Scale 1-4. A propensity score analysis was performed. RESULTS Out of 230 adult encephalitis patients enrolled, 121 (52.6%) received steroids. Adjunctive steroids were given more frequently to those who had focal neurological deficits (P = 0.01), required mechanical ventilation (MV) (P = 0.01), had intensive care unit admission (P < 0.001), had white matter abnormalities (P = 0.01) or cerebral edema on magnetic resonance imaging of the brain (P = 0.003). An ACO was seen in 135 (58.7%) of patients. The use of adjunctive steroids did not impact ACOs (P = 0.52) on univariate analyses or after propensity score matching. Predictors for an ACO in logistic regression analyses included a Glasgow Coma Score (GCS) < 8, fever, MV, and cerebral edema. INTERPRETATION Adjunctive steroids are used more frequently in sicker patients and are not associated with improved clinical outcomes.
Collapse
Affiliation(s)
- Ambreen Allana
- Division of Infectious Diseases, UT Health Science Center At Houston, McGovern Medical School, 6431 Fannin St. MSB 2.112, Houston, TX, 77030, USA
| | - Mohammed Samannodi
- Division of Infectious Diseases, UT Health Science Center At Houston, McGovern Medical School, 6431 Fannin St. MSB 2.112, Houston, TX, 77030, USA.,Department of Medicine, College of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Michael A Hansen
- Department of Family and Community Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Stacia DeSantis
- Department of Biostatistics, UT School of Public Health, Dallas, TX, 75235, USA
| | | | - Rodrigo Hasbun
- Division of Infectious Diseases, UT Health Science Center At Houston, McGovern Medical School, 6431 Fannin St. MSB 2.112, Houston, TX, 77030, USA.
| |
Collapse
|
49
|
Lee GH, Kim J, Kim HW, Cho JW. Clinical significance of Epstein-Barr virus in the cerebrospinal fluid of immunocompetent patients. Clin Neurol Neurosurg 2021; 202:106507. [PMID: 33493883 DOI: 10.1016/j.clineuro.2021.106507] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Polymerase chain reaction (PCR)-based testing of cerebrospinal fluid (CSF) samples has greatly facilitated the diagnosis of central nervous system (CNS) infections. However, the clinical significance of Epstein-Barr virus (EBV) DNA in CSF of individuals with suspected CNS infection remains unclear. We wanted to gain a better understanding of EBV as an infectious agent in immunocompetent patients with CNS disorders. METHODS We identified cases of EBV-associated CNS infections and reviewed their clinical and laboratory characteristics. The study population was drawn from patients with EBV PCR positivity in CSF who visited Pusan National University Hospital between 2010 and 2019. RESULTS Of the 780 CSF samples examined during the 10-year study period, 42 (5.4 %) were positive for EBV DNA; 9 of the patients (21.4 %) were diagnosed with non-CNS infectious diseases, such as optic neuritis, Guillain-Barré syndrome, and idiopathic intracranial hypotension, and the other 33 cases were classified as CNS infections (22 as encephalitis and 11 as meningitis). Intensive care unit admission (13/33 patients, 39.3 %) and presence of severe neurological sequelae at discharge (8/33 patients, 24.2 %) were relatively frequent. In 10 patients (30.3 %), the following pathogens were detected in CSF in addition to EBV: varicella-zoster virus (n = 3), cytomegalovirus (n = 2), herpes simplex virus 1 (n = 1), herpes simplex virus 2 (n = 1), Streptococcus pneumomiae (n = 2), and Enterococcus faecalis (n = 1). The EBV-only group (n = 23) and the co-infection group (n = 10) did not differ in age, gender, laboratory data, results of brain imaging studies, clinical manifestations, or prognosis; however, the co-infected patients had higher CSF protein levels. CONCLUSION EBV DNA in CSF is occasionally found in the immunocompetent population; the virus was commonly associated with encephalitis and poor prognosis, and frequently found together with other microbes in CSF.
Collapse
Affiliation(s)
- Gha-Hyun Lee
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
| | - Jiyoung Kim
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun-Woo Kim
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea; Department of Neurology, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Republic of Korea
| | - Jae Wook Cho
- Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea; Department of Neurology, Pusan National University Yangsan Hospital, Pusan National University, Yangsan, Republic of Korea
| |
Collapse
|
50
|
Dehority W, Janowski AB, Messacar K, Polgreen PM, Beekmann SE. Variability in the Use of Novel Diagnostic Technology in Children With Suspected Encephalitis and in the Management of Emerging Encephalitides by Pediatric Infectious Disease Providers. J Pediatric Infect Dis Soc 2020; 10:529-532. [PMID: 33347568 PMCID: PMC8087119 DOI: 10.1093/jpids/piaa149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/18/2020] [Indexed: 11/14/2022]
Abstract
We surveyed pediatric infectious disease physicians through the Infectious Disease Society of America's Emerging Infections Network regarding the diagnosis and management of encephalitis. We identified practice variations, particularly with the use of new diagnostic modalities and management of autoimmune encephalitides. These findings may inform the creation of updated management guidelines.
Collapse
Affiliation(s)
- Walter Dehority
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA,Corresponding Author: Walter Dehority, MD, MSc, Department of Pediatrics, Division of Infectious Diseases, The University of New Mexico School of Medicine, MSC10 5590. Albuquerque, NM 87131-0001, USA. E-mail:
| | - Andrew B Janowski
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Kevin Messacar
- Department of Pediatrics, University of Colorado, Aurora, Colorado, USA,Department of Pediatrics, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Philip M Polgreen
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Susan E Beekmann
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa, USA
| |
Collapse
|