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viral meningoencephalitis

Laurence Ducharme-Crevier, Michele G Mills, Priya M Mehta, Craig M Smith, Mark S Wainwright
BACKGROUND: The primary objective of this study was to characterize changes in cerebral blood flow measured using transcranial Doppler in children with central nervous system infections. We hypothesized that children with central nervous system infections have abnormal cerebral blood flow, associated with a greater frequency of complications and poor neurological outcome. METHODS: We conducted a single-center, retrospective study of children admitted to the neonatal or pediatric intensive care unit with central nervous system infection and undergoing transcranial Doppler as part of routine care between March 2011 and July 2015...
September 4, 2016: Pediatric Neurology
C Hoyer, P Eisele, A D Ebert, S Schneider, A Gass, M Fatar, K Szabo, A Alonso
BACKGROUND: The term "aseptic meningitis" encompasses cases of meningitis with negative bacterial CSF culture, which predominantly are of viral etiology. While the clinical course is usually benign, complications such as encephalitic involvement resulting in a more severe clinical course may occur. Dysfunction of the blood-brain-barrier (BBB), which is a prerequisite for viral entry into the brain parenchyma, can be approximated using the CSF/serum albumin ratio, readily obtainable in routine CSF analysis...
October 6, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
S Grisariu, I Vaxman, M Gatt, S Elias, B Avni, A Arad, O Pasvolsky, P Raanani, O Paltiel
In recent years, anti-CD20 antibodies have been increasingly used to treat lymphoproliferative and immune disorders. Chronic viral infections are infrequently reported in patients receiving these therapies. Enteroviral infection can cause life-threatening meningoencephalitis and other systemic chronic syndromes in immune deficient patients. We describe the clinical courses and outcomes of 6 patients from 2 tertiary care institutions who developed chronic enteroviral infection with neurological manifestations, after combined chemoimmunotherapy with rituximab for B-cell lymphoma...
October 13, 2016: Hematological Oncology
Jolanta Florczak-Wyspiańska, Ewa Nawotczyńska, Wojciech Kozubski
Yellow fever (YF) is a mosquito-borne viral hemorrhagic fever, which is a serious and potentially fatal disease with no specific antiviral treatment that can be effectively prevented by an attenuated vaccine (YEL). Despite the long history of safe and efficacious YF vaccination, sporadic case reports of serious adverse events (SAEs) have been reported, including yellow fever vaccine-associated neurotropic disease (YEL-AND). YEL-AND usually appears within one month of YF vaccination, manifesting as meningoencephalitis, Guillain-Barré syndrome (GBS) or acute disseminated encephalomyelitis (ADEM)...
September 22, 2016: Neurologia i Neurochirurgia Polska
D K Ajithdoss, M K Torchetti, L Badcoe, D S Bradway, T V Baszler
Highly pathogenic avian influenza (HPAI) is a major viral disease of poultry characterized by acute onset, systemic infection, and rapid death. In January 2015, H5N2 HPAI was identified by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and gene sequencing as the cause of rapid death in 40 of 390 ring-necked pheasants (approximately 10% mortality), raised in a game bird farm in Washington State. We report clinicopathologic findings and viral antigen distribution in pheasants that died during the outbreak...
September 30, 2016: Veterinary Pathology
Yuta Aizawa, Akihide Koyama, Tomohiko Ishihara, Osamu Onodera, Akihiko Saitoh
BACKGROUND: Human parechovirus type 3 (HPeV3) is an emerging virus that causes sepsis and meningoencephalitis in neonates and young infants. Correct diagnosis of HPeV3 infection is critical in determining appropriate management and predicting patients' clinical course. Real-time reverse transcription PCR (RT-PCR) analysis of serum and/or cerebrospinal fluid (CSF) has been used to diagnose HPeV3 infection; however, the assay detection limits have not been fully evaluated. OBJECTIVES: We tested the hypothesis that droplet digital RT-PCR (RT-ddPCR)-a novel technique that precisely quantitates low-copy target genes by diluting and partitioning samples into compartments-increases the detection rate of HPeV3 RNA as compared with real-time RT-PCR...
September 23, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
M R Wilson, L L Zimmermann, E D Crawford, H A Sample, P R Soni, A N Baker, L M Khan, J L DeRisi
Solid organ transplant patients are vulnerable to suffering neurologic complications from a wide array of viral infections and can be sentinels in the population who are first to get serious complications from emerging infections like the recent waves of arboviruses, including West Nile virus, Chikungunya virus, Zika virus, and Dengue virus. The diverse and rapidly changing landscape of possible causes of viral encephalitis poses great challenges for traditional candidate-based infectious disease diagnostics that already fail to identify a causative pathogen in approximately 50% of encephalitis cases...
September 20, 2016: American Journal of Transplantation
Derek Dc Ireland, Cecilia Tami, Joao Pedras-Vasconcelos, Daniela Verthelyi
Neonates are at increased risk of viral encephalopathies that can result in neurological dysfunction, seizures, permanent disability and even death. The neurological damage results from the combined effect of the virus and the immune response it elicits, thus finding tools to facilitate viral clearance from central nervous system (CNS) while minimizing neuron damage remains a critical challenge. Neonatal mice inoculated intraperitoneally with Tacaribe virus (TCRV) develop seizures, hindlimb paralysis and death within 15 days of inoculation...
August 29, 2016: Cellular & Molecular Immunology
Theresia Monica Rahardjo, Tinni Trihartini Maskoen, Ike Sri Redjeki
BACKGROUND: Recovery from cytomegalovirus meningoencephalitis with brain stem death in an immunocompetent patient is almost impossible. We present a remarkable recovery from a possible cytomegalovirus infection in an immunocompetent man who had severe neurological syndromes, suggesting brain stem death complicated by pneumonia and pleural effusion. CASE PRESENTATION: A 19-year-old Asian man presented at our hospital's emergency department with reduced consciousness and seizures following high fever, headache, confusion, and vomitus within a week before arrival...
2016: Journal of Medical Case Reports
Aline Aparecida Silva Barbosa, Alice Freitas Versiani, Larissa Fonseca da Cunha Sousa, Aline Silva de Miranda, Marcela Ribeiro Gasparini, Fátima Brant, Daniele Gonçalves Silva, Iracema Luisa Quintino-de-Carvalho, Frederico Marianetti Soriani, Flávio Guimarães da Fonseca, Anilton César Vasconcelos, Lucíola da Silva Barcelos, Mauro Martins Teixeira, Antônio Lúcio Teixeira, Fabiana Simão Machado, Edel Figueiredo Barbosa-Stancioli, Milene Alvarenga Rachid
The role of suppressors of cytokine signaling (SOCS) in meningoencephalitis caused by Bovine herpesvirus 5 (BoHV-5) was evaluated by intracranial infection in C57BL/6 wild-type mice (WT) and SOCS2 deficient mice (SOCS2(-/-)). Both infected groups presented weight loss, ruffled fur and hunched posture. Additionally, infected SOCS2(-/-) mice showed swollen chamfer and progressive depression. Infected WT animals developed mild meningitis, characterized by infiltration of mononuclear cells. Moreover, viral DNA was detected in liver and lung from infected WT group...
August 2016: Comparative Immunology, Microbiology and Infectious Diseases
Ioannis N Mammas, Demetrios A Spandidos
Hippocrates (Island of Kos, 460 B.C.-Larissa, 370 B.C.) is the founder of the most famous Medical School of the classical antiquity. In acknowledgement of his pioneering contribution to the new scientific field of Paediatric Virology, this article provides a systematic analysis of the Hippocratic Corpus, with particular focus on viral infections predominating in neonates and children. A mumps epidemic, affecting the island of Thasos in the 5th century B.C., is described in detail. 'Herpes', a medical term derived from the ancient Greek word 'ἕρπειν', meaning 'to creep' or 'crawl', is used to describe the spreading of cutaneous lesions in both childhood and adulthood...
August 2016: Experimental and Therapeutic Medicine
Carolina Carballo, Magdalena Cabana, Francisca Ledezma, Carolina Pascual, Claudia Cazes, Alicia Mistchenko, Eduardo López
Saint Louis encephalitis is transmitted by Culex mosquitoes. In Argentina sporadic cases are registered. Symptomatic illness is unusual in children. We present a case of meningoencephalitis caused by an uncommon viral infection. The clinical signs and symptoms are unusual for pediatric patients and the bilateral thalamic compromise showed on magnetic resonance has not been described previously. An 8-year-old girl consulted due to fever, behavior disorders and ataxia. Clonus and neck stiffness were detected at physical exam...
August 1, 2016: Archivos Argentinos de Pediatría
James J Dunn
Infections with enteroviruses and human parechoviruses are highly prevalent, particularly in neonates, where they may cause substantial morbidity and mortality. Individuals with B-cell-related immunodeficiencies are at risk for severe enteroviral infections, usually a chronic and fatal meningoencephalitis. In transplant recipients and patients with malignancy, enterovirus infections typically involve the respiratory tract, but cases of severe, disseminated infection have been described. The mainstay of diagnosis for enterovirus and human parechovirus infections involves the use of molecular diagnostic techniques...
June 2016: Microbiology Spectrum
Laura Krogh Jørgensen, Lars Skov Dalgaard, Lars Jørgen Østergaard, Nanna Skaarup Andersen, Mette Nørgaard, Trine Hyrup Mogensen
BACKGROUND: Large health care databases are a valuable source of infectious disease epidemiology if diagnoses are valid. The aim of this study was to investigate the accuracy of the recorded diagnosis coding of herpes simplex encephalitis (HSE) in the Danish National Patient Registry (DNPR). METHODS: The DNPR was used to identify all hospitalized patients, aged ≥15 years, with a first-time diagnosis of HSE according to the International Classification of Diseases, tenth revision (ICD-10), from 2004 to 2014...
2016: Clinical Epidemiology
G W Kang, H L Hong, I H Lee, K S Ahn, J D Kim, D L Choi
Cytomegalovirus (CMV) infection in patients with liver transplantation (LT) remains a highly prevalent complication with a significant increase in morbidity and mortality. However, CMV-associated meningoencephalitis is rarely diagnosed, and treatment is very difficult. The aim of the present report is to review the experience of successful treatment with combined ganciclovir and foscarnet of CMV-associated meningoencephalitis refractory to ganciclovir alone in a hemodialysis (HD) patient after LT. A 54-year-old woman with end-stage renal disease on HD developed a seizure with loss of consciousness...
May 2016: Transplantation Proceedings
G Rimoldi, A Mete, J M Adaska, M L Anderson, K P Symmes, S Diab
West Nile virus (WNV) infection has been detected in many species of birds and mammals, but scant information is available about the disease in small ruminants. West Nile virus was diagnosed in 6 sheep with neurological signs and encephalitis, in California between 2002 and 2014. All sheep had severe lymphoplasmacytic meningoencephalitis. Lymphoplasmacytic myelitis was also detected in 2 sheep where the spinal cord was examined. Brain tissue was positive for WNV detected by polymerase chain reaction in 6 of 6 sheep and by immunohistochemistry (IHC) in 5 of 6 sheep...
June 16, 2016: Veterinary Pathology
Heng Gee Lee, Timothy William, Jayaram Menon, Anna P Ralph, Eng Eong Ooi, Yan'an Hou, October Sessions, Tsin Wen Yeo
BACKGROUND: Central nervous system (CNS) infections are a significant contributor to morbidity and mortality globally. However, most published studies have been conducted in developed countries where the epidemiology and aetiology differ significantly from less developed areas. Additionally, there may be regional differences due to variation in the socio-economic levels, public health services and vaccination policies. Currently, no prospective studies have been conducted in Sabah, East Malaysia to define the epidemiology and aetiology of CNS infections...
2016: BMC Infectious Diseases
Xiaodan Shi, Rui Wu, Ming Shi, Linfu Zhou, Mengli Wu, Yining Yang, Xinyue An, Wen Dai, Liang Tian, Chen Zhang, Xuejun Ma, Gang Zhao
BACKGROUND: The early detection and identification of pathogens in central nervous system viral infections associated with neurological disease increases the survival rate. However, the limitations of current diagnostic methods contribute to a lack of proper diagnosis in 62% of patients. Therefore, a robust method for detecting multiple viruses in a single reaction with high specificity, throughput, and speed is required. METHODS: A multiplex PCR Mag-Array (MPMA) system was developed that integrates three strategies: chimeric primer design, temperature switch PCR, and MagPlex-TAG techniques...
August 2016: International Journal of Infectious Diseases: IJID
R Kaiser
Tick-borne encephalitis (TBE) is one of the most important viral infections of the human central nervous system. Approximately 10,000 cases of TBE are referred to hospitals in Europe and Asia each year. The TBE virus (TBEV) is mainly transmitted by tick bites but also occasionally by unpasteurized goat's milk. As in endemic areas on average only 1-3 % of ticks are infected with the TBEV and the clinical manifestation rate is approximately 33 %, only approximately 1 in every 100-300 tick bites leads to disease...
June 2016: Der Nervenarzt
Michael Jacobs, Alison Rodger, David J Bell, Sanjay Bhagani, Ian Cropley, Ana Filipe, Robert J Gifford, Susan Hopkins, Joseph Hughes, Farrah Jabeen, Ingolfur Johannessen, Drosos Karageorgopoulos, Angie Lackenby, Rebecca Lester, Rebecca S N Liu, Alisdair MacConnachie, Tabitha Mahungu, Daniel Martin, Neal Marshall, Stephen Mepham, Richard Orton, Massimo Palmarini, Monika Patel, Colin Perry, S Erica Peters, Duncan Porter, David Ritchie, Neil D Ritchie, R Andrew Seaton, Vattipally B Sreenu, Kate Templeton, Simon Warren, Gavin S Wilkie, Maria Zambon, Robin Gopal, Emma C Thomson
BACKGROUND: There are thousands of survivors of the 2014 Ebola outbreak in west Africa. Ebola virus can persist in survivors for months in immune-privileged sites; however, viral relapse causing life-threatening and potentially transmissible disease has not been described. We report a case of late relapse in a patient who had been treated for severe Ebola virus disease with high viral load (peak cycle threshold value 13.2). METHODS: A 39-year-old female nurse from Scotland, who had assisted the humanitarian effort in Sierra Leone, had received intensive supportive treatment and experimental antiviral therapies, and had been discharged with undetectable Ebola virus RNA in peripheral blood...
July 30, 2016: Lancet
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