Last updated on 04/01/2021 01:54 PM
Post ID: 1012
Pfizer Covid vaccine is 91% effective in updated data, protective against South African variant
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The shot was also 100% effective in preventing illness among trial participants in South Africa, where a new variant called B1351 is dominant, although the number of those participants was relatively small at 800.
While the new overall efficacy rate of 91.3% is lower than the 95% originally reported in November for its 44,000-person trial, a number of variants have become more prevalent around the world since then.
Pfizer’s Chief Executive Officer Albert Bourla said the updated results, which include data on more than 12,000 people fully inoculated for at least six months, positions the drugmakers to submit for full U.S. regulatory approval.
The vaccine is currently authorized on an emergency basis by the U.S. Food and Drug Administration.
The trial data “provide the first clinical results that a vaccine can effectively protect against currently circulating variants, a critical factor to reach herd immunity and end this pandemic for the global population,” Ugur Sahin, chief executive officer at BioNTech, said in a statement.
Experts fear new variants of Covid-19 from South Africa and Brazil may be resistant to existing vaccines and treatment. More than 300 cases of the South African variant have been detected in more than 25 U.S. states and jurisdictions, according to federal data.