Ahmedabad Mosquito-Borne Disease Testing Falls Sharply as Dengue Cases Rise

Blood and dengue sample collection by the Ahmedabad Municipal Corporation (AMC) has dropped sharply in 2026, prompting concerns that reduced testing could be masking the true scale of the city’s mosquito-borne disease burden even as hospitals report a growing number of fever and dengue cases.

Health Department data shows that AMC collected 20.58 lakh blood samples across the city in 2025. Meanwhile, the civic body has only collected around 11.78 lakh samples in the first eight months of 2026.

This gap widens further when monthly figures, particularly for August, are compared year-on-year. With four months of the year still remaining, officials could point to timing as a partial explanation, but critics argue the scale of the shortfall raises questions about whether testing has kept pace with the disease burden.

Dengue serum testing shows a similar pattern. The AMC collected 78,745 dengue serum samples through 2025, compared with 41,606 in the first eight months of 2026. The corporation’ s most recent figures put the 2026 count at nearly 11.79 lakh blood samples, 41,606 dengue serum samples and 8,117 chikungunya serum samples.

Hospital Admissions Point to a Different Trend

While civic testing volumes have fallen, patient numbers at government hospitals suggest the disease burden itself may be rising.

At Asarwa’s Civil Hospital, dengue cases rose from 32 in July to 94 in August, while viral fever cases increased from 574 to 639 over the same period.

The hospital logged 21,903 outpatient department (OPD) attendances over the past seven days, of which 2,268 patients required admission. This points to an average of roughly 3,129 OPD patients a day.

Sola Civil Hospital recorded 140 dengue cases between July 17 and August 23, followed by a further 118 cases between August 24 and August 30.

The hospital also logged 31 suspected swine flu cases, adding to the seasonal caseload. Private hospitals across the city are reporting a continued stream of patients with viral fever, cold and cough symptoms, indicating the surge is not confined to government facilities.

Official Surveillance Data Tells a Mixed Story

The AMC’s own surveillance figures show vector-borne diseases persisting through the monsoon season. Between August 1 and August 16, the civic body recorded 68 dengue cases, 48 cases of simple malaria, six cases of falciparum malaria and one chikungunya case.

In the preceding period, August 1–9, it logged 19 dengue cases, 13 simple malaria cases, one falciparum malaria case and one chikungunya case.

In response, the AMC has stepped up mosquito-control efforts, including inspections of construction sites and commercial premises, breeding notices and fogging drives across the city.

Why Testing Volumes Matter

The core question raised by health observers is whether falling case numbers reflect an actual decline in transmission, or simply reflect less testing.

Disease surveillance depends as much on how widely a population is tested as on the number of confirmed positive cases; when fewer symptomatic patients are tested, fewer infections are captured in official data.

This does not, on its own, establish that case numbers are being deliberately understated. But it does mean that testing volume is a critical factor in judging the reliability of reported figures, particularly during a season when mosquito breeding and fever cases typically peak.

With the monsoon still active and hospitals continuing to see a steady flow of fever patients, the coming months are likely to clarify whether the city’s disease burden is genuinely easing, or whether part of the apparent decline stems from reduced surveillance rather than reduced infection.