INTRODUCTION: Demographic factors, such as age and sex, are associated with the likelihood of exposure to Aedes aegypti, the vector for dengue. However, dengue data disaggregated by both sex and age are not routinely reported or analysed by national surveillance systems. This study analysed the reported number of incident dengue cases by age and sex for six countries in Asia.METHODS: Data for the Lao People's Democratic Republic, the Philippines, Singapore and Sri Lanka were obtained from DengueNet; the number of male and female dengue cases was available for four age groups (