Antibodies not present in all those who recovered from Covid-19: Sero survey
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The National Centre for Disease Control did not find antibodies in the blood of 97 out of 208 people who had previously tested Covid positive during its July sero survey. The NCDC, which comes under the Union Ministry of Health and Family Welfare, also said in its sero-survey report that immune response among Delhi’s population may be short lived as the city has a large floating population from places such as Noida, Gurgaon and Ghaziabad.