Dengue Cases Surge 37% in Ahmedabad as Mosquito-Borne Outbreak Intensifies in September

Dengue Cases Surge 37 Per Cent in Ahmedabad as Mosquito-Borne Outbreak Intensifies in September

Ahmedabad faces a sharp rise in vector-borne illnesses following the monsoon season, with official Ahmedabad Municipal Corporation (AMC) health data revealing 496 dengue cases in the first 20 days of September 2026 alone.

The latest figure marks a 37 per cent surge compared to August, when 361 cases were recorded across the city. With 135 additional cases registered before the month has even drawn to a close, municipal health figures show that cumulative dengue infections for 2026 reached 1,084 by 20 September.

Mosquito-Borne Infection Breakdown

While dengue numbers continue to climb, other vector-borne infections show varied trends across municipal wards over the same 20-day span:

• Dengue: 496 cases recorded between 1 and 20 September, up from 361 in August, bringing the 2026 total to 1,084.
• Malaria: 70 cases reported in September so far, compared to 141 in August, taking the year's tally to 386.
• Falcrum Malaria (Toxic Malaria): 22 cases registered in the first 20 days of September, down from 28 in August, pushing the annual count to 69.
• Chikungunya: 7 cases logged up to 20 September, compared to 4 in August, bringing the 2026 total to 14.

By comparison, total figures for the full calendar year of 2025 stood at 1,591 dengue cases, 915 malaria cases, 206 falcrum malaria cases, and 19 chikungunya cases.

Testing Rates Decline Amid Rising Dengue Infections

Despite the rapid increase in dengue infections, diagnostic testing has slowed down across the city. Health department records show that 13,820 dengue tests were conducted in August, whereas only 7,762 tests were carried out during the first 20 days of September. From January through 20 September 2026, civic medical teams completed a aggregate of 54,260 dengue tests.

Civic teams have simultaneously executed anti-larval measures to curb vector breeding. Health workers inspected water sources at multiple locations, testing 64,854 water samples and identifying mosquito larvae at 294 sites up to 20 September. Municipal authorities also conducted 4,51,351 chlorine tests this year to evaluate water quality standards.

Water-Borne Diseases Escalation and Water Sample Unfit Reports

Alongside vector-borne threats, water-borne illnesses have registered a concerning upticks in the initial 20 days of September, including 140 cases of diarrhoea-vomiting, 172 typhoid cases, and 48 jaundice cases.

To monitor drinking water safety, AMC collected 4,873 water samples in September, of which 13 were declared unfit for consumption. Out of more than 64,000 water samples gathered by municipal teams throughout 2026, a total of 294 samples have failed quality checks and been declared unfit.