Guwahati, May 21 -- After heavy rains, stagnant water often stands still on streets, rooftops, and empty spaces in cities, appearing harmless but actually causing serious health problems that many people don't realize.

While rain usually feels fresh and clean, water that stays in one place for a long time can become a home for harmful germs and insects that spread diseases.

In many cities, drains and gutters get blocked, causing rainwater to collect and stay for days or even weeks during the rainy season. This still water is perfect for mosquitoes to breed.

When these mosquitoes multiply, more people, especially children, older adults, and those with weak immune systems, can get sick.

Stagnant rainwater doesn't just bring mosquito pro...