Essay: High Risk Groups

The high risk groups for JEV are children and young adults, where children between 3 to 15 years are 10 times more likely to get infected than adults. The elderly, chronically sick, those with immunosuppressant diseases are also more likely to get infected[1]. The infected will often show symptoms ranging from malaise, meningoencephalitis, seizures and death.

JEV infection also characterized by febrile illness that is non-specific or by aseptic meningitis. The most serious type of JEV is Meningo-encephalitis that has a death rate of 5 to 35 percent; survivors of this type end up with serious neurological sequelae depicted by ataxia, paralysis, tremors, loss of memory, behavior disorder and impaired cognition[2]. After infection, humans are exposed to a 4 to 14 day incubation period where they suffer a few days of fever, coryza and rigors[3].


[1] Solomon, T., Dung, M.N., Kneen, R., Gainsborough, M., Vaughn, D.W. and Khanh, V.T. Japanese Encephalitis (J. Neurol. Neurosurg. Psychiatry, 68, 2000) 414.

[2] Tiroumourougane, S.V., Raghava, P. and Srinivasan, S. Japaneseviral Encephalitis (Postgrad. Med. J. 78, 2002) 207.

[3] Kabilan, et al., Japanese Encephalitis, 506.

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