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Why the coronavirus variant in South Africa has put a damper on vaccines and why many are still hopeful
A roller coaster of research has stoked concerns that a coronavirus variant first linked to South Africa could be resistant to vaccines and raise the bar for herd immunity.
But scientists and vaccine makers say the data have not yet had the final word, and there’s still reason to be hopeful.
On Sunday, health officials in South Africa announced a temporary hold on the rollout of the Oxford/AstraZeneca vaccine after a study suggested it offered “minimal protection” against mild-to-moderate Covid-19 due to the variant, the University of Oxford said.