Based on the findings of serosurvey, the Indian Council of Medical Research (ICMR) has said that 64 lakh Indians had been ready infected by Covid-19 by May. These were undiagnosed and the infected people had developed antibodies against the novel coronavirus.
The sero-survey further revealed that for every confirmed Covid-19 case in May, there were 82-130 infections that went undetected. Incidentally, by midway India had just around 90,000 cases.
The national serosurvey was conducted from May 11 to June 4 on 28,000 individuals. Their blood samples were tested for IgG antibodies using Covid Kavach ELISA kit.
According to the survey, seropositivity was found to be the highest in the 18-45 age group (43.3%), followed by the 46-60 age group (39.5%). It was found the lowest among those aged over 60 (17.2%).
“The findings of our survey indicated that the overall sero-prevalence in India was low, with less than one per cent of the adult population exposed to SARS-CoV-2 by mid-May 2020,” the survey said.
