Why India’s deadly dengue crisis is now no longer confined to the monsoons
Summary
Dengue fever in India is no longer limited to the rainy monsoon season. Rising temperatures, unpredictable rainfall, and growing cities are helping mosquitoes spread the disease throughout the year.Key Facts
- Dengue infections are now appearing before the monsoon season, earlier than usual.
- India reported 6,927 dengue cases by the end of February 2026, a high number for that time of year.
- Traditionally, dengue cases rose during and just after the monsoon rains, then dropped as temperatures cooled.
- Rising temperatures and erratic rainfall help the mosquitoes that carry dengue survive longer and spread wider.
- Urban areas with rapid growth are increasing mosquito breeding sites.
- Southern Indian states like Tamil Nadu, Maharashtra, Kerala, and Karnataka have reported the highest dengue cases in early 2026.
- Health experts warn that dengue is becoming a year-round health threat instead of a seasonal illness.
- Doctors report more dengue patients in months that were previously considered safe from the disease.
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