Pfizer’s Covid-19 vaccine produces antibodies able to neutralize the Indian variant, but with “slightly reduced efficiency” in the laboratory, according to a study by researchers at the Institut Pasteur, as reported Provence.
According to work published on the BioRxiv website, the antibodies present in the blood serum of people vaccinated with two doses of the Pfizer vaccine are effective on the English variant, but slightly less effective against the Indian variant studied (the B.1.617.2 virus, which appears to be the most transmissible version of the Indian variant and which has recently been detected in around ten countries).
Pfizer vaccine “probably protective”
Despite “a slightly reduced efficacy, according to laboratory tests, the Pfizer vaccine is probably protective”, reassures Olivier Schwartz, co-author of the study and director of the virus and immunity unit at the Institut Pasteur (Paris). .
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