Increased rainfall this season could raise dengue infection risk

KATHMANDU: The Epidemiology and Disease Control Division has warned that this year’s above-average monsoon rainfall may lead to a rise in dengue infections.

The Department of Hydrology and Meteorology has predicted heavier than usual rainfall during this monsoon season, prompting concerns about increased dengue transmission.

Dr. Gokarna Prasad Dahal, Head of the Vector-Borne Disease Section at the division, stated, “Currently, the number of dengue cases is lower compared to last year, but with the expected heavy rainfall, the risk of infection is likely to increase.”

He explained that stagnant water accumulated due to excessive rainfall creates ideal breeding grounds for dengue-carrying mosquitoes.

Dr. Dahal urged the public to remain vigilant by properly managing water collection points such as old tires and flower pots to prevent mosquito breeding.

According to Dr. Dahal, Aedes aegypti and Aedes albopictus mosquitoes breed in clean, stagnant water. Once larvae mature into adult mosquitoes and bite humans, they transmit dengue fever.

Since Poush 17, 1,081 dengue cases have been reported across 71 districts.

The division has issued warnings and control measures to 30 local governments where more than five cases have been recorded.

In 2024, dengue infections spread to 76 districts, affecting 41,865 people and causing 15 deaths.