Even Pfizer/Moderna Vaccines No Match for Covid Variant
They're the gold standard for Covid vaccines but that laurel may be fleeting.A laboratory study suggests that the South African variant of the coronavirus may reduce antibody protection from the Pfizer/BioNTech vaccine by two-thirds, and it is not clear if the shot will be effective against the mutation, the companies have said.
The study found the vaccine was still able to neutralise the virus and there is not yet evidence from trials in people that the variant reduces vaccine protection, the companies said.
Still, they are making investments and talking to regulators about developing an updated version of their mRNA vaccine, or a booster shot, if needed.
The leading vaccines remain quite effective against the UK variant that is spreading through Canada.
The two coronavirus vaccines developed by Pfizer-BioNTech and Moderna appear to be highly effective against the more transmissible variant of the virus first detected in Britain, according to newly published studies in the New England Journal of Medicine, in a potential boost to vaccination efforts around the globe.