West Bengal's dengue caseload has surpassed 5,000 this year, prompting the state health department to formally designate 29 municipalities, 85 community development blocks, and 278 village panchayats as active hotspots. The latest bulletin, published on Sunday, 14 September 2026, recorded 5,002 affected individuals as of 11 September — more than double the figure logged at the same point in August, when total cases stood below 2,500.

How Hotspots Are Being Identified

The health department is applying a specific threshold-based formula to classify hotspot zones. A village panchayat is flagged if it records 10 or more dengue patients; a community block is marked if more than 30 people test positive; and a municipality qualifies when the majority of its wards each report five or more dengue-affected persons. Officials say this structured classification allows health workers to concentrate intensive and randomised blood-sample testing where transmission risk is highest.

Districts Bearing the Heaviest Burden

According to departmental data, Murshidabad district has recorded the highest caseload at 1,072 confirmed cases so far. Kolkata follows at 500, and North 24 Parganas accounts for 450 cases. Together, these three zones represent a significant share of the statewide total, underscoring the urban-rural spread of the current outbreak.

Self-Medication a Growing Concern

Health officials say one of the most alarming trends is that residents in several hotspot areas with fever lasting two or more days are opting for self-medication rather than seeking clinical consultation. 'What has kept us especially worried is that in many of these hotspots, people having fever for two or more days are often resorting to self-medication instead of consulting any medical practitioner. This is aggravating the crisis,' an official from the state health department said. Authorities are conducting mass awareness drives urging residents to visit the nearest health centre or consult a doctor instead of self-medicating.

Surveillance and Prevention Measures on the Ground

Health workers are carrying out door-to-door surveillance across affected areas, advising households to keep water tanks and cisterns covered, use mosquito nets where covers are unavailable, and prevent water from stagnating in flowerpots and abandoned containers on rooftops. The department is also monitoring ponds, drains, pools, dry canals, unused wells, and factories for mosquito breeding sites. Larvicides are being deployed in line with standard health guidelines.

What the Surge Signals

The near-doubling of cases within a single month — from under 2,500 in August to over 5,000 by mid-September — points to a sharp seasonal acceleration consistent with post-monsoon dengue patterns across eastern India. This comes amid broader concerns about waterlogging and inadequate vector-control infrastructure in rural panchayat areas. How quickly the hotspot-focused testing and awareness drives contain transmission will determine whether the outbreak stabilises before the end of the season.