Tag: SARS-CoV-2 variant February 10, 2022 Washington University participates in clinical trial of Moderna omicron boosterPeople who have received 2 or 3 doses of Moderna COVID-19 vaccine to be enrolled.News Release June 24, 2021 Virus that causes COVID-19 can find alternate route to infect cellsCOVID-19 drugs, vaccines still effective against mutating virus.News Release Posts navigation