A large outbreak of Japanese encephalitis predominantly among adults in northern region of West Bengal, India

Unusual rise of acute encephalitis syndrome cases (AES) were reported in July 2014 in the northern region of West Bengal, India. Investigations were carried out to characterize the outbreak and to identify the associated virus etiology. This observational study is based on 398 line listed AES cases,...

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Bibliographic Details
Published in:Journal of medical virology 2016-11, Vol.88 (11), p.2004-2011
Main Authors: Gurav, Yogesh K., Bondre, Vijay P., Tandale, Babasaheb V., Damle, Rekha G., Mallick, Sanjay, Ghosh, Uday S., Nag, Shankha S.
Format: Article
Language:English
Subjects:
Acute Disease
Acute encephalitis syndrome
Adolescent
Adult
adults
Child
disease outbreak
Disease Outbreaks
Eastern India
Encephalitis Virus, Japanese - genetics
Encephalitis Virus, Japanese - isolation & purification
Encephalitis, Japanese - epidemiology
Encephalitis, Japanese - mortality
Encephalitis, Japanese - virology
Female
Genotype
genotype II
Humans
India - epidemiology
Japanese encephalitis virus
Male
Virology
Young Adult
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Summary:Unusual rise of acute encephalitis syndrome cases (AES) were reported in July 2014 in the northern region of West Bengal, India. Investigations were carried out to characterize the outbreak and to identify the associated virus etiology. This observational study is based on 398 line listed AES cases, mostly (70.8%, 282/398) adults, with case fatality ratio of 28.9% (115/398). Japanese encephalitis virus infection was detected in 134 (49.4%) among 271 AES cases tested and most of them (79.1%, 106/134) were adults. The study reports a large outbreak of genotype III Japanese encephalitis among adults in northern region of West Bengal, India. J. Med. Virol. 88:2004–2011, 2016. © 2016 Wiley Periodicals, Inc.
ISSN:0146-6615
1096-9071
DOI:10.1002/jmv.24556