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COVID-19 in India: ICMR performs nationwide serosurvey to find out the extent of exposure




The serosurvey involves testing human blood serum to check the prevalence of antibodies to coronavirus infections.

The ICMR announced on Thursday that a nationwide sero survey to determine the exposure of the novel coronavirus to the population was conducted as a result of a similar study conducted in May, the results of which are yet to be published. The Indian Medical Research Council (ICMR) will conduct a “sero-survey” that tests human blood serum to check the prevalence of antibodies to coronavirus infections.

The final results of the Sero survey conducted by the ICMR in May, which focused on infections in mid-April, are still pending, said Rajesh Bhushan, a special official at the Union Ministry of Health, on Thursday.

“The sero survey that ICMR carried out across the country focused on infections in mid-April and preliminary results. As you know, any such sero-surveillance or other scientific studies will be peer-reviewed and these inputs will also be considered this process continues, “he told reporters. “We̵

7;ll be able to share it once it’s over,” he said.

The ICMR had previously indicated that 0.73 percent of the population surveyed had evidence of past exposure to SARS-CoV-2 based on data collected in the first part of the sero-surveillance study from 65 districts out of 83 districts across the country .

Bhushan said the results of the Sero survey conducted in Delhi by the National Center for Disease Control (NCDC), as part of which 22,000 samples were collected from 11 districts from June 27 through July 5, will be processed .

“In the near future, the ICMR plans to follow-up the Sero survey across India to the earlier Sero survey they did in mid-April for infections,” said Bhushan.

The May Sero survey consisted of two parts: estimating the proportion of the general population infected with SARS-CoV-2 and estimating the number of people infected with coronavirus in hotspot city safety zones, ICMR officials had previously said. The development of IgG antibodies against infection in the body takes about 15 days.

India saw a record increase in 24,879 coronavirus infections in one day, increasing the nationwide COVID-19 number on Thursday to 7,67,296, while the death toll increased to 21,129 with 487 new deaths, according to data updated at 8:00 a.m. of the Ministry of Health showed.


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