Contagious and concerning: What we know about COVID-19 variants
Fast-spreading coronavirus variants have ignited global concern over whether existing vaccines will be able to protect the world from a virus that is constantly mutating.
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Fast-spreading coronavirus variants have ignited global concern over whether existing vaccines will be able to protect the world from a virus that is constantly mutating.
by · Published April 12, 2021
by · Published April 27, 2021
by · Published May 14, 2021