Seventy-nine of 257 people who had COVID-19, recovered, and later tested for antibodies against the virus, did not have the antibodies, according to a report of the second serological survey done in August by the Delhi government. Experts, however, said that there was no need to “panic”, as the neutralising antibodies (IgG) tend to vanish after three months, but in most cases the memory cells will remember the virus and trigger an immune response if the person who recovered from COVID-19 is again attacked by the virus.

Seventy-nine of 257 people who had COVID-19, recovered, and later tested for antibodies against the virus, did not have the antibodies, according to a report of the second serological survey done in August by the Delhi government. Experts, however, said that there was no need to “panic”, as the neutralising antibodies (IgG) tend to vanish after three months, but in most cases the memory cells will remember the virus and trigger an immune response if the person who recovered from COVID-19 is again attacked by the virus.