The resurgence of dengue in Singapore since 1986 had been associated with a
n adult predominance and a very low incidence in children. No study had bee
n carried out to investigate this finding. Here we report a serological stu
dy of 1068 children aged 0 to 15 years. There is a significant rise in sero
conversion in children aged 6 years and older coinciding with the start of
formal schooling. This suggests that there may be a change in the location
where dengue is acquired.