Isolation of Japanese encephalitis virus from mosquitoes near Bogor, West Java, Indonesia.

Abstract

Studies on the epidemiology of Japanese encephalitis (JE) virus in West Java, Indonesia have shown that a pig-Culex tritaeniorhynchus Giles cycle of transmission exists near the capital city of Jakarta (Koesharjono, Van Peenen, Joseph, Saroso, Irving & Durfee, 1973, Bull. Hlth Stud. Indonesia 1 : 8–18; Van Peenen, Joseph, Atmosoedjono, Irsiana, Saroso & Saaroni, 1974a, SE Asian J. Trop. Med. Pub. Hlth 5 : 1–3; Van Peenen, Joseph, Shope, Irsiana, Saroso & Joseph, 1974b, Milit. Med. 139 : 821–23). C. tritaeniorhynchus was the predominant mosquito in areas of pig husbandry (Atmosoedjono, Van Peenen, Joseph, Sulianti & See, 1973, SE Asian J. Trop Med. Pub. Hlth 4 : 108–12), and JE virus was isolated from pools of this species (Van Peenen et al., 1974b, loc. cit.). Transmission of JE virus was also studied in a rural environment of West Java. Mosquitoes were collected and analyzed for 1 year at an inland area, with results noted herein.