Unusual winter trend: Delhi sees 7 dengue cases last week | Latest News Delhi

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Delhi reported seven more dengue cases last week, bringing the number of vector-borne diseases in the capital to 15 this year. This has raised fears that the Aedes aegypti mosquito – which spreads the dengue virus – could adapt to cold conditions.

No dengue cases were reported in the first 15 days of January in 2021, 2020 and 2019.

Public health experts said companies should ensure anti-mosquito action is not limited to the post-monsoon period.

dr BK Tripathi, a professor in the medical department at Safdarjung Hospital, noted that until a few years ago, dengue cases leveled off in extreme summers and mid-winters, and said mosquitoes are now adapting to harsh climatic conditions. “Public bodies must ensure that preparations and measures against mosquito population control are carried out throughout the year,” said Dr. tripati.

A senior municipal public health official said changes in adult mosquito behavior needed more scrutiny, but added that the increase in reports could also be due to the disease being reported as a reportable disease in October last year. “The 36 hospitals under the ‘Sentinel monitoring system’ used to share data with us weekly, but now companies receive data from 180 health facilities in the city,” the official said.

Delhi recorded 9,613 dengue cases and 23 deaths in 2021, making it the second-worst annual outbreak on record.

Of the 15 cases reported so far in January, three each were reported in areas under North Corporation and two in East Delhi, while the addresses of the remaining seven could not be traced, the report said. In addition, seven other cases showed that the infections were acquired from other states.

A report by authorities shows that 187 cases of mosquito breeding were detected during this period, up from 46 and 44 in the corresponding periods of 2021 and 2020, respectively.

A senior municipal public health official said 210 legal notices had been issued to property owners for negligence leading to mosquito-borne conditions and prosecutions had been initiated in 17 cases.

On Friday last week, while hearing a case about the dengue outbreak in the city, the Delhi High Court said mosquito infestations and the spread of vector-borne diseases are not just seasonal.

“No doubt they can be increased during the monsoon season. That doesn’t mean, however, that other factors aren’t responsible for the proliferation of mosquitoes and the spread of vector-borne diseases… It’s up to local authorities to carry out a campaign to deal with such situations on a daily basis, and the threat cannot be addressed by just that to address the issue in certain months of the year,” it said.

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