• High single-dose efficacy of Pfizer vaccine against SARS-CoV-2 in older adults

    13 days ago - By News Medical

    In British Columbia , Canada, vaccination against coronavirus disease 2019 began with the Pfizer/Moderna mRNA vaccines began with nursing home residents and frontline healthcare workers. These are known to have a high protective efficacy of 92-93% after a single dose, but this data comes from younger and healthy adults, for the most part.
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  • New Astra-Zeneca B.1.351 vaccine AZD2816 strongly immunogenic against multiple SARS-CoV-2 variants of concern

    13 days ago - By News Medical

    A new study, released on the bioRxiv* preprint server, supports the efficacy of the wildtype ChAdOx1 nCoV-19 vaccine against B.1.351, B.1.617.1 and B.1.617.2, while showing that a booster dose of vaccine based on the B.1.351 spike induces further increase in antibody titers.
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