Abstract

A serological study had been conducted on 1329 specimens collected from DHF suspected cases admitted to 18 hospitals in Jakarta during 1990. Analysis of data were done in 978 paired specimens including: sex, age, hospital origin. The clinical diagnosis accuracy for DHF from the whole specimens were 50,41% compared with 70,13% in 1986-1987. Number of DHF cases were fluctuating from January to September 1990 with three peaks in May, July, September. There was no sex difference. Mode of age group of DHF cases were 5-10 year old. There were also DHF cases among older age group (15-20). This finding confirmed the previous report and might be due to Dengue virus virulence differences and decreasing of endemicity.