Erratic rainfall in April has contributed to a spike in dengue cases in the capital, with more than half of this year’s infections reported during the month, according to Vibha Sharma's Times of India report.
According to official data, Delhi has recorded 107 dengue cases so far this year, of which 52 were reported in April alone.
In comparison, the city had logged 130 dengue cases till April in 2025, including 32 cases in April. The corresponding figures stood at 35 in April 2024 and 18 in April 2023.
Officials said intermittent rainfall prevents water from drying up fully, leading to prolonged stagnation in containers, drains and other water bodies. This creates favourable conditions for mosquitoes to complete their breeding cycle and multiply.
“While findings of the mosquito density index are yet to come out, we are requesting people to take precautions to avoid water accumulation on terraces and take indoor preventive measures to minimise mosquito breeding considering the trend is continuing,” an official.
The mosquito density index is an entomological surveillance metric used to estimate mosquito abundance — typically Aedes aegypti, the primary vector for dengue and chikungunya — in a given area. By measuring larval, pupal or adult mosquito populations, the index helps identify high-risk zones for disease transmission and guides targeted control measures.
Officials said civic agencies have stepped up containment efforts, covering open spaces, drains and water bodies. So far, around 1.2 crore house visits have been conducted, with 15,649 households found positive for mosquito breeding.
The civic body has issued 16,261 legal notices for mosquito breeding violations and initiated prosecutions in 1,712 cases. It has also imposed administrative challans of Rs 50,000 and above in 358 cases, recovering over Rs 1 lakh.
In addition to local dengue cases, 119 infections this year were either contracted outside Delhi, linked to incomplete addresses, or involved patients who could not be traced. Last year, such cases stood at 107.
Apart from dengue, Delhi has reported 29 malaria cases so far this year, including five in the past week. In comparison, 39 cases were reported during the same period in 2025, 35 in 2024, and two in 2023.
Chikungunya cases remain low, with five infections reported so far this year, including two in the last week. This compares with six cases in 2025, 17 in 2024, and none in 2023 till the end of April.
(With TOI inputs)
According to official data, Delhi has recorded 107 dengue cases so far this year, of which 52 were reported in April alone.
In comparison, the city had logged 130 dengue cases till April in 2025, including 32 cases in April. The corresponding figures stood at 35 in April 2024 and 18 in April 2023.
Officials said intermittent rainfall prevents water from drying up fully, leading to prolonged stagnation in containers, drains and other water bodies. This creates favourable conditions for mosquitoes to complete their breeding cycle and multiply.
“While findings of the mosquito density index are yet to come out, we are requesting people to take precautions to avoid water accumulation on terraces and take indoor preventive measures to minimise mosquito breeding considering the trend is continuing,” an official.
The mosquito density index is an entomological surveillance metric used to estimate mosquito abundance — typically Aedes aegypti, the primary vector for dengue and chikungunya — in a given area. By measuring larval, pupal or adult mosquito populations, the index helps identify high-risk zones for disease transmission and guides targeted control measures.
Officials said civic agencies have stepped up containment efforts, covering open spaces, drains and water bodies. So far, around 1.2 crore house visits have been conducted, with 15,649 households found positive for mosquito breeding.
The civic body has issued 16,261 legal notices for mosquito breeding violations and initiated prosecutions in 1,712 cases. It has also imposed administrative challans of Rs 50,000 and above in 358 cases, recovering over Rs 1 lakh.
In addition to local dengue cases, 119 infections this year were either contracted outside Delhi, linked to incomplete addresses, or involved patients who could not be traced. Last year, such cases stood at 107.
Apart from dengue, Delhi has reported 29 malaria cases so far this year, including five in the past week. In comparison, 39 cases were reported during the same period in 2025, 35 in 2024, and two in 2023.
Chikungunya cases remain low, with five infections reported so far this year, including two in the last week. This compares with six cases in 2025, 17 in 2024, and none in 2023 till the end of April.
(With TOI inputs)
