COVID-19 vaccines authorized in US appear to be “very protective” against variants


February 23, 2021

5 min read


Source: Press Briefing

Disclosures: Gandhi reports no relevant financial disclosures. Healio Primary Care was unable to confirm Gronvall and Pekosz’s relevant financial disclosures at the time of publication.


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The emergence of SARS-CoV-2 variants worldwide has led to concern and confusion among the general public.

Recently, South Africa halted its rollout of the AstraZeneca-Oxford COVID-19 vaccine after preliminary data showed the vaccine provided limited protection against the country’s dominant B.1.351 variant. This has drawn concern that COVID-19 vaccines may not protect against the emerging SARS-CoV-2 variants.

During a press briefing, Gigi Gronvall, PhD, an immunologist and associate professor in the department of environmental health and engineering at John Hopkins Bloomberg School of Public Health, said that “it’s pretty normal for viruses to mutate like this — almost all viruses do…

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