New Delhi has witnessed a notable reduction in dengue fatalities and infections in 2025, according to the latest official data on vector-borne diseases. The capital recorded four deaths and 1,493 confirmed cases of dengue in the year, marking a significant improvement from the figures of preceding years.
Annual Trends and Unverified Cases
The monthly breakdown reveals that October was the worst month, with 377 cases, followed by September (260) and November (220). However, the Municipal Corporation of Delhi (MCD) report highlighted a persistent issue: over 2,000 suspected dengue cases could not be confirmed. This was primarily due to patients providing incomplete or incorrect addresses, or them being untraceable even after verification attempts.
When compared to previous years, the decline is stark. In 2024, Delhi reported 11 dengue deaths and over 6,000 confirmed cases. The year 2023 saw an even higher toll with 9,266 cases and 19 deaths, while 2022 had 4,469 cases and nine fatalities.
Improvement in Data Tracking and Other Diseases
The report indicated positive progress in data collection. Cases where patient addresses could not be verified dropped to 1,529 in 2025, down from 2,616 in 2024 and 4,918 in 2023. Similarly, instances where addresses were traced but patients were not found reduced to 455 last year, compared to 756 in 2024 and 1,411 in 2023.
The declining trend extended to other mosquito-borne illnesses. Malaria cases saw a marginal dip, with 741 reported in 2025 versus 784 in 2024. Chikungunya infections also fell, with 180 cases last year against 259 in 2024. Notably, 2023 had recorded only 31 chikungunya cases.
Drop in Enforcement and Political Controversy
Interestingly, the data pointed to a substantial reduction in on-ground enforcement actions. Prosecutions during inspections plummeted to 29,117 in 2025 from 55,157 the previous year. Legal notices issued also fell, with 1,51,105 sent till December 27, 2025, lower than the 1,67,107 in 2024.
The report's findings have sparked a political row. The Aam Aadmi Party (AAP) has accused the BJP-led civic body of manipulating the statistics and presenting inconsistent data across platforms. The BJP has rejected these allegations, counter-claiming that the AAP, during its tenure in the corporation, had discontinued the practice of issuing weekly dengue reports to allegedly suppress the true figures.
