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A clinico-epidemiological study of Chikungunya outbreak in Maharashtra State, India.

The year 2006 witnessed an extensive outbreak of Chikungunya fever in Maharashtra state. Out of 6467 sera of suspected patients sent to National Institute of Virology, Pune, 804 were serologically confirmed. This retrospective study was carried out by interrogating all those patients for their sickness experience. Adult females from rural area were more affected than males. In 68.2% families, there were multiple cases. Fever and multiple joint involvement were almost invariable. In 36.5% patients, there was history of recurrence. Along with pain, slight swelling was noticed in 55% patients. The commonest joints involved were wrist, inter-phalangeal, elbow, knee and ankle, in that order. The pain and swelling persisted for more than a month. After health education during outbreak, there was positive improvement in behavior pertaining to source reduction of vector. Inter-personal communication was best remembered. In health education, the role of paramedical workers and government doctors was prominent.