Hybrid immunity may help protect against Omicron
New Delhi, 10/12: Covid-19 has ravaged many countries and claimed millions of lives in the past two years. In India, too, a pandemic caused by the SARS-CoV-2 virus had affected many between April and May 2021 and before that. The national sero-survey conducted post-second wave showed a seropositivity rate of about 80 per cent, including…
