Sri Lanka is intensifying its efforts to combat a surge in dengue fever cases, with the government expanding a military-supported campaign to control mosquito breeding sites in the worst-affected areas. The initiative, which began last month, involves deploying security forces alongside medical personnel to identify and eliminate mosquito habitats contributing to the spread of the disease.

According to Kapila Kannangara, head of the National Dengue Control Unit, the number of staff involved in the operation will double starting Thursday, focusing primarily on Colombo, the capital, and two neighboring districts where infection rates have been highest. The expansion aims to curb the rapid increase in dengue cases that has overwhelmed parts of the country.

Official statistics indicate that 61,057 people contracted dengue fever in the first half of 2026, more than twice the 30,060 cases reported during the same period last year. The death toll has reached 49, underscoring the severity of the outbreak. More than 15,000 infections have been recorded just in July.

Dengue fever, transmitted by the Aedes mosquito, typically causes high fever, headaches, nausea, vomiting, and muscle pain. In severe instances, it can lead to bleeding and death, particularly if untreated or in vulnerable populations.

The military’s involvement, said to enhance surveillance and eradication of mosquito breeding sites, reflects the government’s commitment to controlling the escalating public health challenge. Health authorities continue to emphasize preventive measures, including eliminating stagnant water sources where mosquitoes breed and raising public awareness to reduce transmission risks.