Two new variants of the coronavirus were detected in the U.K. and have now been followed to other parts of the world including South Africa and North America. The South African variant could be more problematic than the U.K. strain. Will these strains pose a problem for the new vaccines?
Please see the link below.
https://www.theguardian.com/world/2021/jan/08/pfizer-vaccine-protects-against-new-covid-variants-study-suggests
Both the Pfizer and Moderna vaccines work by training our immune systems to recognize a specific version of the viral spike protein. The version of the spike protein used by the vaccines was designed to match that of the old virus, not that of the B.1.1.7 virus. This means that the vaccines might become less effective than expected should this new virus spread widely. Vaccine-virus mismatch is an ongoing challenge for scientists charged with developing the seasonal flu vaccine. But even with a virus-vaccine mismatch, the flu vaccine reduces the likelihood, and the severity, of disease. The severity of the mismatch matters, but the only way to determine its impact, in this case, is through scientific study, and to my knowledge, no data on that has yet been collected. In other words, it’s too early to say whether and how this new variant will influence the overall effectiveness of the Pfizer and Moderna vaccines. So, if this new version is more transmissible, or if the vaccine is less effective because of a virus-vaccine mismatch, more people will need to be vaccinated to achieve herd immunity and get this disease under control.
https://qz.com/1949085/will-covid-19-vaccines-work-against-the-new-mutated-strain/
Please see the link below.
https://www.theguardian.com/world/2021/jan/08/pfizer-vaccine-protects-against-new-covid-variants-study-suggests
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