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COVID-19 antibodies appear to ward off B117 better than B1351

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COVID-19 survivors and those vaccinated against coronavirus appear able to fight off infection with the B117 SARS-CoV-2 variant but may not have the same level of protection against the B1351 variant, according to two new studies.Importance of second vaccine doseIn the first study, published late last week in Nature Medicine, researchers at Institut Pasteur in Paris isolated infectious B117, the variant first identified in the United Kingdom, and B1351, first discovered in South Africa, from the nasal swabs of symptomatic COVID-19 patients.

Like some other emerging variants, B117 and B1351 are more infectious than previously dominant varieties, leading to fears that they could evade natural and vaccine-induced immunity.The researchers

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