June 14, Colombo (LNW): Health officials have sounded the alarm over a significant increase in mosquito breeding activity across Sri Lanka, warning that the trend could accelerate the spread of dengue in the coming weeks if preventive measures are not taken urgently.
According to data gathered by the National Dengue Control Unit (NDCU), mosquito larvae indices have risen noticeably during recent months, reflecting a growing number of breeding sites in residential areas, schools and public institutions. Entomology experts attribute the increase to favourable weather conditions, poor waste management and the accumulation of stagnant water in many communities.
Officials reported that the national mosquito larvae density climbed to approximately 12 per cent in May, compared with around 8 per cent recorded a month earlier. The increase has been particularly evident in homes, where breeding site detections rose sharply during the same period.
Schools have emerged as a major area of concern, with inspections revealing a dramatic rise in mosquito breeding locations. Health authorities said the proportion of school premises found to contain larvae increased substantially within a single month, highlighting the need for stronger monitoring and clean-up campaigns in educational institutions.
Elevated mosquito breeding levels have also been detected in government offices, religious establishments and industrial zones. Factory surroundings recorded some of the highest infestation rates, while places of worship and public facilities also showed worrying trends.
The NDCU has called on residents, community organisations and institutions to conduct regular inspections of their premises and eliminate any containers or locations capable of collecting water. Officials stressed that even small amounts of stagnant water can become breeding grounds for dengue-carrying mosquitoes.
Meanwhile, health authorities have urged members of the public to seek immediate medical attention if they develop symptoms such as fever, severe headaches, body aches or persistent fatigue. Early diagnosis and treatment remain critical in preventing complications associated with the disease.
NDCU Director Dr Kapila Kannangara warned that dengue transmission is currently increasing in several parts of the country and emphasised the importance of following medical advice without delay when symptoms appear.
So far this year, more than 40,000 dengue infections have been reported nationwide, while 23 people, including four children, have lost their lives to the disease. Health officials have identified dozens of Medical Officer of Health divisions across multiple districts as high-risk areas, prompting intensified surveillance and vector-control operations.
Authorities are expected to expand awareness campaigns and inspection programmes in the coming weeks as part of a broader effort to curb the spread of dengue and reduce the risk of further outbreaks.