Epidemiology of subperiodic Wuchereria bancrofti infection in the Nicobar Islands, India

摘要: Abstract Diurnally subperiodic filariasis due to Wuchereria bancrofti has been reported from tribal populations in the Nancowry group of islands Andaman and Nicobar Islands, India. This was confirmed a survey carried out during monsoon season 1993. Microfilariae were detected peripheral blood throughout 24 h period with peak at 18:00. The microfilaria (mf) rate ranged 1·2% 18·7%, low disease (mean = 1·9%). Incidence mf children less than 10 years old (3·5%), but increased increasing age. Culex (Culex) quinquefasciatus present very density. Aedes (Finlaya) niveus (Stegomyia) malayensis only species commonly biting man. former incriminated as vector, found naturally infected W. (infection infectivity rates 1·1% 0·9% respectively). After experimental feeding on donors, developed L3 stage larvae A. failed develop aegypti.