Cambodian health ministry warns of rise in dengue cases during rainy season

Preah Vihear health department officials spraying insecticide to prevent mosquitoes from breeding, as dengue fever cases rise. The Aedes mosquito, commonly called the tiger mosquito, is a known vector for dengue. Unusually, they are active during the day. -Health department

PHNOM PENH: The Health Ministry has issued a warning to the public and urged stronger preventive action in response to the rising trend of dengue fever cases during the 2025 rainy season.

On Thursday (July 10), the ministry announced that cases have been increasing since late April and are expected to continue rising. This is due to increased rainfall which leads to more standing water in containers and items such as used tyres, coconut shells, bottles, jars, plant vases, water tanks, buckets, flowerpots, table stands, cupboards and cups – all of which become breeding grounds for Aedes mosquitoes.