• SARS-CoV-2 outbreak in Delhi highlights challenge of reaching herd immunity against Delta

    7 days ago - By News Medical

    The severe outbreak of COVID-19 in Delhi, India, in 2021 showed not only that the Delta variant of SARS-CoV2 is extremely transmissible but that it can infect individuals previously infected by a different variant of the coronavirus, say a team of international scientists writing in Science.
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  • COVID-19 immunity in family members reduces risk of infection by 45-97%

    7 days ago - By News Medical

    An interesting new study examines the risk of COVID-19 to a susceptible individual who is part of a family with COVID-19 immunity.
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