Understanding
> Variants
What is a mutation for the SARS-CoV-2 coronavirus?
What is a variant of the SARS-CoV-2 coronavirus?
How does a variant of the SARS-CoV-2 coronavirus spread?
Which variants of the SARS-CoV-2 coronavirus have attracted attention?
Do the variants call into question the efficacy of the vaccines?
What do we know about the British variant?