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South Africa variant: Do vaccines work against SA variant? What is the concern about?

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Trials of Novavax, Janssen and the Oxford/AstraZeneca vaccines in South Africa, where B.1.351 is circulating, suggest the variant can escape some immunity and may not stop infections.

But experts say vaccines should still offer protection against severe and life-threatening COVID-19 illness.

Results from Moderna suggest its shot is still effective against the South Africa variant, although the immune response may not be as strong or prolonged.

Vaccines can also be redesigned and tweaked to provide a better match in a matter of weeks or months, if necessary.



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