8/31/2023 0 Comments I doser doses gratuitesThe study relies on the results from 78,000 PCR tests performed between November 15 and December 7. According to a South-African carried out by the South African Medical Research Council (SAMRC), the vaccine developed by the American laboratory is 70% effective against severe disease. The Pfizer vaccine is a vaccine that can protect against the Covid Omicron variant.
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