, Nov. 25 -- In Naogaon municipality, the relentless rise of dengue cases is exposing a deeper public health crisis, as residents confront swarms of mosquitoes amid longstanding urban sanitation failures.

For weeks, communities across the town have battled insects invading homes, schools, businesses and offices-pestering residents even in daylight hours. Coils, sprays and smoke have become everyday essentials, yet the relentless buzzing and painful bites continue.

Locals said what was once a seasonal nuisance has transformed into a source of fear, frustration and growing anger at local authorities.

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A Town on Edge

Naogaon Municipality, home to over 268,000 people acro...