Background:The severity of clinical manifestation of dengue infection depends on the 4 virus serotypes. The aim of the study is to explore the distribution of dengue virus serotypes in 3 cities (Pontianak, Medan and Jakarta) in 2008. Methods: The study was across-sectional designed; data were obtained from each 2 hospitals in Pontianak, Medan and Jakarta. Sera samples were collected from patiā¦