Seroepidemiological study of Japanese encephalitis in Dimapur, Nagaland.

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dc.contributor.authorAngami, Ken_US
dc.contributor.authorChakravarty, S Ken_US
dc.contributor.authorDas, M Sen_US
dc.contributor.authorChakraborty, M Sen_US
dc.contributor.authorMukherjee, K Ken_US
dc.date.accessioned1989-06-01en_US
dc.date.accessioned2009-06-01T18:17:58Z
dc.date.available1989-06-01en_US
dc.date.available2009-06-01T18:17:58Z
dc.date.issued1989-06-01en_US
dc.description.abstractA seroepidemiological study of Japanese encephalitis (JE) in Dimapur, Nagaland was carried out following an outbreak of the disease between July, 1985 and February, 1986. Altogether 50 persons were affected with 30 (60 per cent) deaths. The attack and death rates per 1000 were more in Nagas viz. 0.55 and 0.34 than non-Nagas viz. 0.33 and 0.20 respectively. All ages and both sexes were affected. Of the nine mosquito species encountered Culex vishnui showed the highest density (44.5/MH). Culture of mosquito pool did not yield any viral agent. A total of 311 serum samples comprising 95 humans, 166 animals and 50 birds were tested for the presence of haemagglutination inhibition (HI) antibodies against Chikungunya and three flavirus antigens, viz. JE, WN and DEN-2. The overall flavivirus HI antibody in humans was positive in 26 (27.3 per cent) almost identical to JE antibody prevalence. The per cent positivity of HI antibodies to JE, WN and DEN-2 were 42.2 per cent, 22.2 per cent and 13.3 per cent in the affected and 14.2 per cent, 10 per cent and 6 per cent in the unaffected area. The activity of Alpha (Chikungunya) virus though very low was significantly higher (chi 2 = 5.57) in the affected area. The prevalence of JE antibody was 77.7 per cent in dogs, 52 per cent in cattle, 34 per cent in pigs and 21.1 per cent in goats. Of the five species of birds, flavivirus and JE antibodies were detected in 21.4 per cent pigeons and 22.2 per cent heron egrettes. Neutralisation test established the distinct role of JE virus over other related flavivirus antigens.en_US
dc.identifier.citationAngami K, Chakravarty SK, Das MS, Chakraborty MS, Mukherjee KK. Seroepidemiological study of Japanese encephalitis in Dimapur, Nagaland. Journal of Communicable Diseases. 1989 Jun; 21(2): 87-95en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/112123
dc.language.isoengen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshChilden_US
dc.subject.meshChild, Preschoolen_US
dc.subject.meshDisease Outbreaksen_US
dc.subject.meshEncephalitis, Japanese --epidemiologyen_US
dc.subject.meshFemaleen_US
dc.subject.meshHemagglutination Inhibition Testsen_US
dc.subject.meshHumansen_US
dc.subject.meshIndia --epidemiologyen_US
dc.subject.meshInfanten_US
dc.subject.meshInfant, Newbornen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshSeroepidemiologic Studiesen_US
dc.titleSeroepidemiological study of Japanese encephalitis in Dimapur, Nagaland.en_US
dc.typeJournal Articleen_US
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