COVID Variants: What You Should Know | Johns Hopkins Medicine
https://www.hopkinsmedicine.org/health/conditions-and-diseases/coronavirus/a-new-strain-of-coronavirus-what-you-should-know
WebApr 8, 2022 · In November 2021, a variant of the SARS-CoV-2 coronavirus emerged and was named omicron by the WHO, which lists it as a variant of concern. Cases of the highly contagious variant, including a subvariant called BA.2, or “stealth omicron,” have caused surges of COVID-19, particularly in areas where safety precautions have been relaxed.
DA: 17 PA: 2 MOZ Rank: 90