Two new Omicron variants are spreading. Will they drive a new US surge?
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New versions of Omicron are again causing a surge of COVID-19 cases in South Africa, and studies show that these new…
New versions of Omicron are again causing a surge of COVID-19 cases in South Africa, and studies show that these new…
New versions of Omicron are again causing a surge of COVID-19 cases in South Africa, and studies show that these new…
Science Coronavirus Coverage The subvariants BA.4 and BA.5 may dodge immunity, especially in unvaccinated people, possibly…
When SARS-CoV-2 was first isolated in January 2020, researchers who studied viral genetics said it would mutate at some point.