The Delta variant of SARS-COV-2 was behind majority of clinical cases of breakthrough infection of COVID-19 but only 9.8 per cent cases required hospitalisation and fatality was observed in only 0.4...
from NDTV News - Topstories https://ift.tt/3kp4Jw4
from NDTV News - Topstories https://ift.tt/3kp4Jw4
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