Dengue cases in Tamil Nadu dropped for the third consecutive year, with the state recording 17,049 cases up to September 19, 2026.
Reported cases previously fell by 17% between 2023 and 2024, followed by a 46% decline in 2025 according to state health department data.
The state reported nine dengue-related deaths up to September 19, 2026, compared to 12 fatalities recorded during the previous year.