Highly Contagious South African COVID Strain Reaches U.S. - Here's Why All of the Mutations Are Such a Big Deal

There's heightened concern today as a new, more contagious strain of the coronavirus has been discovered in the U.S. Health experts are increasingly concerned about the South African variant because the COVID vaccines currently on the market may not be as effective against it. Top health officials are speaking in blunt terms about fears over this mutation of the virus.

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