Turn the page on COVID-19? Not so fast, say experts
Experts warn that unequal vaccine access could still lead to the emergence of new and more deadly variants of the virus.
Fri Sep 24 2021
What we do and don't know about new COVID mutations
Scientists have tracked multiple mutations of Sars-CoV-2, the virus that causes COVID-19 since it appeared in China in late 2019.
Sat Jan 09 2021