Second wave shows herd immunity against Delta variant difficult: Study

The severe outbreak of Covid-19 in Delhi this year showed that the Delta variant can infect previously exposed people through a different variant of the coronavirus

The severe outbreak of Covid-19 in Delhi this year showed that the Delta variant can infect previously exposed people through a different variant of the coronavirus https://ift.tt/3FOlUzp October 14, 2021 at 09:38PM