Health Update – Delhi Reports Lower Vector-Borne Disease Cases Till Early June
Health Update – Delhi has not recorded any deaths linked to dengue, malaria, or chikungunya during the current year, according to the latest weekly surveillance report released by the Municipal Corporation of Delhi (MCD). The data indicates that health authorities have continued monitoring and preventive activities across the city while keeping a close watch on the spread of mosquito-borne illnesses.
Disease Cases Remain Below Last Year’s Levels
Official figures show that Delhi reported 152 dengue cases, 39 malaria cases, and eight chikungunya infections between January 1 and June 6. During the same period in the previous year, the city had registered 185 dengue cases, 66 malaria cases, and 13 chikungunya cases. The latest numbers suggest a decline in all three diseases compared to the corresponding period of last year.
Dengue Cases Peaked During April
Among the three diseases, dengue accounted for the highest number of reported infections. Health records show that dengue cases increased significantly during April, when 52 infections were documented. The number later dropped to 35 cases in May, while June has so far recorded 10 infections up to June 6.
Officials continue to monitor trends closely, particularly as the monsoon season approaches, a period typically associated with increased mosquito activity and a higher risk of vector-borne diseases.
Malaria and Chikungunya Numbers Stay Limited
Malaria cases remained comparatively low throughout the reporting period. Delhi registered 14 malaria infections in April, followed by eight cases in May and two cases during the initial days of June.
Chikungunya activity also remained limited across the capital. Three infections were reported in April, two in May, and one case has been detected so far in June. Health authorities noted that the overall chikungunya burden continues to be relatively low compared to dengue.
West Zone Reports Highest Disease Burden
The MCD report highlighted that the West zone recorded the largest number of dengue and malaria cases among all civic zones in Delhi.
A total of 28 dengue cases were reported from the West zone, making it the most affected area. The Central zone followed with 20 cases, while Civil Lines reported 19 dengue infections. During the most recent reporting week, 10 new dengue cases were identified across the city.
The West zone also registered the highest number of malaria infections, accounting for 14 cases since the beginning of the year. Two fresh malaria cases were added during the latest surveillance week.
For chikungunya, the Central and West zones reported two cases each. One new chikungunya infection was recorded in the South zone during the reporting period.
Large-Scale Surveillance and Prevention Efforts
As part of its mosquito-control campaign, the Municipal Corporation of Delhi carried out extensive inspections across residential areas. Between January 1 and June 6, domestic breeding checkers visited more than 1.62 crore households. Of these, over 7.45 lakh inspections were conducted during the latest reporting week alone.
Mosquito breeding was detected in 32,558 houses during the surveillance drive. In the most recent week, breeding sources were found in 3,485 homes, prompting immediate preventive action.
Enforcement Measures Against Violations
The civic body reported that indoor anti-mosquito spraying was conducted in 1,72,174 houses this year. Authorities also issued 30,948 legal notices to property owners where mosquito breeding conditions were identified.
Additionally, action was taken against 3,547 repeat violators. Administrative penalties totaling ₹2.32 lakh were imposed through 850 enforcement actions. The report further noted that larvivorous fish, which help control mosquito larvae naturally, are currently being maintained at 229 locations across the city as part of biological prevention measures.
Continued Vigilance Ahead of Monsoon
Public health officials have emphasized the importance of regular inspections, community participation, and timely preventive measures to limit the spread of mosquito-borne diseases. With weather conditions expected to become more favorable for mosquito breeding in the coming months, surveillance and control activities are expected to remain a priority across Delhi.