Tap water access in Delhi linked to dengue infection risk reports study


PTI, Feb 12, 2021, 11:59 AM IST

New Delhi: Tap water access in densely populated parts of Delhi is a strong predictor of the risk of contracting dengue, says a study that may lead to new strategies to control the transmission of the deadly virus in urban areas.

The dengue virus is among a growing number of mosquito-borne pathogens across the world that have adapted to spread in cities, the scientists, including Vikram Kumar from the National Institute of Malaria Research in Delhi, noted.

They said close to 3.5 billion people across the world are at risk of dengue viral infection which is spreading increasingly with growing rates of urbanisation.

In the current study, published in the journal PLOS Neglected Tropical Diseases, the scientists analysed social and environmental risk factors for contracting the virus in Delhi.

They measured dengue antibodies in 2,107 individuals and mosquito larval prevalence in 18 areas within the city as well as socio-economic factors across neighbourhoods.

Based on the analysis, the scientists said 7.6 per cent of the surveyed individuals were positive for dengue virus antibodies, indicating a recent or current infection.

The study found that colonies with very poor access to tap water, with less than 61 per cent of houses having access, were associated with a higher risk of exposure to the virus.

According to the research, these were the only type of areas to register dengue cases between epidemics.

However, despite relatively low mosquito densities, they said wealthy colonies had a higher risk of recent infection than intermediary colonies.

The scientists believe this may likely reflect the import of dengue virus by commuters coming into the high-income areas during the day.

Citing the limitations of the research, the scientists said the classifications in the study based on wealth indicators are subjective to an extent.

However, they said these do offer at least some quantitative indication of socio-economic status.

According to the scientists, the use of larval mosquito indices as a measure mosquito density was also a limitation since “they have been shown to have limited predictive value for dengue incidence.”

But the researchers said improved access to tap water could still lead to a reduction in dengue, not only for those directly affected but for the general population.

They believe targeted intervention through mosquito control in winter in the socially disadvantaged areas could offer a rational strategy for optimising control efforts.

Udayavani is now on Telegram. Click here to join our channel and stay updated with the latest news.

Top News

Vijayapura: Crowd attacks four persons on suspicions of being ‘child kidnappers’

PayCM: Bommai says Congress resorting to dirty politics

India Women all out for 169 in final ODI against England

Udupi ZP CEO carries out civic workers’ duties; collects waste from households

Malenadu will not be allowed to become a den of terrorists: Araga Jnanendra

PFI violence in Kerala pre-meditated, culprits will not be spared: Chief Minister Pinarayi Vijayan

Dasara: DC declares 4 additional holidays for schools in Dakshina Kannada


Related Articles More

Chandigarh Univ video case: Army man held from Arunachal Pradesh, fourth arrest in case

PFI violence in Kerala pre-meditated, culprits will not be spared: Chief Minister Pinarayi Vijayan

Delhi Police arrests businessman for loan fraud

Army capable of giving befitting reply to any power looking at India with evil intentions: Rajnath

Pay enhanced DA to retired employees of Transport dept: HC

MUST WATCH

Health Minister K Sudhakar Statement about paycm

How to grow Avocado

Dasara Celebration in Uchila Mahalakshmi Temple

NIA raids PFI and SDPI offices in Mangaluru

CM Bommai meet HD Deve Gowda with the minister


Latest Additions

Vijayapura: Crowd attacks four persons on suspicions of being ‘child kidnappers’

Chandigarh Univ video case: Army man held from Arunachal Pradesh, fourth arrest in case

Congress backed PFI when in power, alleges Minister V Sunil Kumar

Congress in Karnataka unified, says U T Khader

PayCM: Bommai says Congress resorting to dirty politics

Thanks for visiting Udayavani

You seem to have an Ad Blocker on.
To continue reading, please turn it off or whitelist Udayavani.