Health experts express growing concern that vaccines may not work as well on variants. By
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There are new variants of the novel coronavirus that are spreading more widely.
While mutations and variations are normal, experts are concerned about transmissibility and whether existing vaccines will protect against new variants.
Some studies suggest vaccines may not be as effective on the new variant first identified in South Africa.
New variants of the novel coronavirus have popped up around the world. While mutations and changes in viruses are normal and expected, some variants may have combinations of mutations that may be concerning to public health experts. One of the recent new variants was first identified in South Africa.