| transmission profile of hepatitis b virus infection in the batam region, indonesia. evidence for a predominantly horizontal transmission profile. | the aim of this study was to describe the distribution of hepatitis b virus markers among the autochthonous and immigrant multicultural populations of riau province, indonesia, in order to define the groups at risk and their infrastructure. this investigation was part of a large hepatitis b vaccination study. a total of 9701 healthy individuals, aged 5 years or older and living in the urbanised area of batam, near singapore, and on the surrounding islands were included. socio-epidemiological dat ... | 2003 | 12916789 |