Subclinical infection is common in-

Inapparent infection is one where the clinical effects are not apparent. the term subclinical infection is often used as synonym. Japanese encephalitis is a serious illness and there have been outbreaks in india.the disesa is abrupt in onset with fever,headache and vomiting,followed by signs of encephalitis. In epidemic the moality may approach 50%. convalescence maytake many weeks with residual neurological damage in up to 50% of cases. The disease is prevented by control of mosquitoes and locating pig farms far from human habitation. there is no satisfactory vaccine REF:Ananthanarayan & Panicker's Textbook of Microbiology 8th Edition pg no :76 & 523