source https://timesofindia.indiatimes.com/world/us/new-covid-variant-hits-us-as-biden-vows-all-out-effort/articleshow/80019645.cms
New Covid variant hits US as Biden vows all-out effort
source https://timesofindia.indiatimes.com/world/us/new-covid-variant-hits-us-as-biden-vows-all-out-effort/articleshow/80019645.cms