Chennai boosts dengue prevention efforts amid a surge in cases, with the Greater Chennai Corporation (GCC) intensifying vector control measures citywide. From January to July 8, 2025, the city recorded 522 cases, up from 381 in the same period last year. Adyar emerged as the worst-hit zone, reporting 111 cases, followed by Shollinganallur with 63.
In June alone, over 23 tonnes of mosquito-breeding waste — including tyres, broken pots, and drums — was cleared, with Adyar accounting for the largest share. Officials stressed that Aedes mosquitoes, which spread dengue, breed in stagnant clean water found in homes, such as in unused tyres, sunshades, and refrigerator trays.
Dengue cases in Chennai usually peak between August and October, particularly during the intermittent rains of the southwest monsoon. Public health experts warn the next breeding cycle begins within days, calling for urgent action. Historical outbreaks in Tamil Nadu, like those in 2012 and 2017, serve as reminders of the risk.
While some blame infrastructure projects for hindering vector control, the GCC asserts that 2,400 domestic breeding checkers inspect hundreds of homes weekly, backed by fogging and fines. Officials stress that public cooperation and cleanliness remain key to fighting dengue.
