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Aditi Tandon
Tribune News Service
New Delhi, July 21
One in four persons in Delhi may have contracted Covid-19 by June-end, while 77 per cent of the population is still susceptible to the virus, as indicated by a study by the National Centre for Disease Control (NCDC).
The first "sero-surveillance survey" to determine the presence of Sars-Cov2 virus in the Capital took blood samples from 21,387 people and subjected them to ELISA test to see how many of them had developed antibodies for the virus after getting infected by Covid-19.
The results of the study show that 23.48 per cent of Delhi's population got infected with Covid after six months of the outbreak.
The survey was done across all 11 districts of the Capital.
Valved N-95 masks ineffective, says govt
Director General, Health Services, Rajiv Garg on Tuesday said, "The use of valved respirator N-95 masks is detrimental to the steps adopted for preventing the spread of coronavirus as it does not prevent the virus from escaping out of the mask."
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