South African variant can 'break through' Pfizer vaccine, Israeli study says
The study, released on Saturday, compared almost 400 people who had tested positive for Covid-19, 14 days or more after they received one or two doses of the vaccine, against the same number of unvaccinated patients with the disease. It matched age and gender, among other characteristics.
By April 11, 2021 at 12:48PM
By April 11, 2021 at 12:48PM
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