A new strain of coronavirus is spreading in the U.S. New versions of the virus are constantly developing from mutations, or slight genetic changes that occur as the original virus copies itself inside the human body. The new variant, which originated in the U.K., is more contagious than the original, raising concerns that infections could increase quickly in the U.S. and other countries as well. Listen to learn how the new strain may be causing infections to spread more easily and what scientists say is the best way to stay safe.
Story Length: 3:41
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