By Tony Winterburn • 09 March 2021 • 8:34
Lab Test Shows Pfizer Covid Vaccine Is Effective Against Brazil Variant.
Lab Tests with the coronavirus vaccine developed by Pfizer and BioNTech was able to combat a new variant that was rapidly circulating in Brazil, a new study has found.
The research published in the New England Journal of Medicine found that the engineered version of the virus, containing the same mutation carried on the spike protein as the highly contagious P1 variant first identified in Brazil, was effectively neutralised among people who were given the jab.
The new variants are observed to carry changes in the spike, which is used by the virus to enter the human cells. These changes, in turn, affects how transmissible the virus is and therefore, is the primary target of the many coronavirus vaccines.
Scientists from the two companies and the University of Texas Medical Branch said that the neutralising ability of the vaccine on the new variant was equivalent to the effect on the less contagious version of the virus from the last year.
The Covid-19 vaccine developed by China’s Sinovac Biotech Ltd has also shown promise against the P1 variant. The preliminary data from a study in Brazil indicated that Coronavac, as the Sinovac shot is known, was effective against the P1 variant of the virus.
Other studies showed that the Pfizer/BioNTech jab worked against variants of the coronavirus first discovered in the UK and South Africa – although the South African variant may reduce the protective antibodies stimulated by the vaccine.
Pfizer has said that it believes its current inoculation is highly likely to still provide protection against the South African variant.
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