Nobody is unknown to coronavirus and the havoc it has wreaked on humanity since 2020. Considered to have been one of the biggest pandemics in the history of humankind, the coronavirus induced COVID-19, is still infecting millions of people worldwide with its emerging variants.

from Times of India https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/coronavirus-alpha-beta-gamma-delta-omicron-know-what-studies-say-about-next/photostory/89404397.cms