The total number of dengue-affected individuals in West Bengal during the current calendar year has surpassed the 5,000 mark, according to the latest bulletin issued by the state Health Department. As of 11 September 2026, the cumulative count stands at 5,002, with the sharpest surge recorded in just the past month.

A Month of Rapid Spread

The pace of the outbreak is what has alarmed public health officials. Until the end of August 2026, total dengue cases in the state were under 2,500. That figure more than doubled within the following two weeks, meaning over 2,500 fresh cases were recorded in roughly 30 days.

'The alarming factor is that the total number of dengue-affected people till the same date in August was less than 2,500. This means that over the last month, over 2,500 additional individuals have been freshly affected by dengue,' a senior Health Department official said.

Districts Worst Affected

Murshidabad district leads the tally with 1,072 cases, followed by Kolkata at 500 and North 24 Parganas at 450. Officials noted that this geographic pattern is consistent with previous years.

'This is as per the trend every year, since in almost all the last few years these three districts have witnessed the maximum number of dengue-affected people,' the official added. The recurring concentration in these districts points to structural challenges — drainage patterns, population density, and stagnant water bodies — that have not been fully addressed despite repeated seasonal warnings.

The SOP Effect: More Testing, Not Just More Cases

Health Department officials are cautiously interpreting the spike as, in part, a product of more rigorous surveillance. On 2 September 2026, the department issued a Standard Operating Procedure (SOP) on dengue monitoring and prevention, mandating door-to-door screening and immediate blood testing of anyone presenting dengue symptoms.

'The sudden rise in the number of newly affected people proves that the SOP guidelines have been followed diligently,' the official said. Officials also stressed that the numbers reflect a sharp reduction in underreporting — a practice, they acknowledged, that had been 'rampant during the last few years', when dengue cases were often logged as 'unknown disease'.

Government Response and the Road Ahead

The Health Department has directed all district authorities to run a sustained public awareness and testing campaign through 15 October 2026. District administrations have been asked to submit daily reports tracking the number of fever cases detected and patients tested for dengue.

The directive aims to prevent a further exponential rise as the post-monsoon season — historically West Bengal's peak dengue window — continues. With cases still climbing and six weeks remaining in the campaign period, whether the SOP can flatten the curve will be closely watched.