Stacker consulted research from Yale Medical School and the World Health Organization to find how SARS-CoV-2 has evolved ...

Since 2020, COVID-19 has surged across the nation and the world. With variants like Omicron, Delta, Alpha and more, this ...

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Over the last few years, the SARS-CoV-2 virus, responsible for COVID-19, has undergone significant changes, evolving from the original wild-type strains to the highly transmissible Omicron variant.

part of the Omicron lineage that began spreading last spring and drove a summer wave. The strains currently circulating are mostly descendants of KP.2, meaning the vaccines should be “a pretty good ...

Medically reviewed by Kate Colby, MPH If you have COVID-19, you may be wondering how long your illness will last. Your ...