As Delhi moves deeper into the monsoon season, fresh figures from the Municipal Corporation of Delhi (MCD) show that dengue continues to be the capital’s most reported vector-borne disease, with 162 cases recorded so far in 2026.
According to the MCD’s latest weekly vector-borne disease report released on 16 June, the city has also reported 42 cases of malaria and nine cases of chikungunya since the beginning of the year. The latest reporting week saw three new malaria cases and one chikungunya case.
The data showed that 10 dengue cases were added over a fortnight, taking the tally to 20 by 15 June. Despite remaining the most prevalent mosquito-borne illness in Delhi, the cumulative dengue count till June 13 was lower than the 196 cases reported during the corresponding period last year.
The report highlighted a challenge facing disease surveillance efforts, with a significant number of infections either traced to locations outside Delhi or linked to incomplete addresses, making it difficult for authorities to identify sources and track transmission patterns.
As concerns over mosquito-borne diseases persist, civic authorities have intensified preventive measures across the city. During the latest week, MCD teams carried out more than 8.3 lakh house visits to check for mosquito breeding. Inspections found mosquito larvae in 4,028 houses, prompting officials to issue 3,532 legal notices and launch 379 prosecutions against violations linked to mosquito-breeding conditions.
The scale of the exercise has been extensive. Since 01 January, authorities have inspected more than 1.7 crore households across Delhi as part of vector-control operations. The drive has resulted in 34,480 legal notices and 3,926 prosecutions, reflecting the civic body’s continued focus on curbing the spread of dengue, malaria and chikungunya through surveillance and enforcement measures.
