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Sero survey results set to be out today, Capital will get idea of Covid spread

The National Centre for Disease Control (NCDC) is collating the results, and while the official report is yet to be declared, sources said the positivity rate is around 10%.

delhi coronavirus cases, coronavirus cases delhi, delhi COVID cases, COVID cases delhi, delhi news, city news, indian express A health worker collects a sample of a man for COVID-19 test at a centre, in New Delhi, Saturday, July 4, 2020. (Express Photo By Amit Mehra)

In what should indicate the spread of Covid-19 in the national capital, results of a serological surveillance of almost 23,000 people, conducted in 11 districts of Delhi, are likely to be announced today.

The National Centre for Disease Control (NCDC) is collating the results, and while the official report is yet to be declared, sources said the positivity rate is around 10%. “Initial results suggest that 10% of the total samples lifted have been found positive. We will submit the report to the Ministry of Home Affairs on Saturday,” said a senior official from the NCDC.

Between June 27 and July 5, a total of 22,823 samples were picked up at random by the surveillance team for antibody testing. During the survey, blood samples were collected to determine if a person is infected with the novel coronavirus. It will also be used to detect if the person was infected with the virus in the past and identify antibodies being produced to combat Covid-19.

On Friday, the city reported 2,089 new cases and 42 deaths due to Covid-19, taking the total number of confirmed cases to 1,09,140 and the death toll to 3,300. A total of 2,468 people have recovered or been discharged in the last 24 hours, taking the total number of recoveries to 84,694.

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In Delhi, testing is done through three techniques — RT PCR, which is the gold standard for testing; rapid antigen, which is faster; and antibody testing to check for prevalence of antibodies developed in a body after recovering from the virus.

The Ministry of Health and Family Welfare is planning to follow up the serological survey with a study to evaluate the prevalence of the disease among the population. The first study was done in May by the ICMR. As per the ICMR, initial findings of the first sero-survey from 65 districts in India had revealed that only 0.73% of the population was exposed to Covid-19.

First published on: 11-07-2020 at 03:08 IST
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