The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...
CoV-2, the coronavirus behind the COVID-19 pandemic, constantly mutate. Since 2025, multiple new variants have emerged, each ...
Since SARS-CoV-2 first emerged in late 2019 the virus has spawned dozens of lineages, a handful of global "variants of ...