Posted in NEWS Coronavirus updates: Research teams discover new variants of US COVID-19; Pope Francis gets Pfizer vaccine January 14, 2021 The single-dose Johnson & Johnson COVID vaccine is safe and generates an immune response, based on early stage clinical trials. Latest COVID news. http://rssfeeds.usatoday.com/~/641580118/0/usatoday-newstopstories~Coronavirus-updates-Research-teams-discover-new-variants-of-US-COVID-Pope-Francis-gets-Pfizer-vaccine/