Pfizer shot effective against SA variant

By Carl O'Donnell
Updated April 1 2021 - 11:52am, first published 11:50am
The Pfizer-BioNTech COVID-19 vaccine is about 91 per cent effective at preventing the disease.

Pfizer and BioNTech's COVID-19 vaccine is about 91 per cent effective at preventing the disease, they say, citing updated trial data that includes participants inoculated for up to six months.

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