Health Moderna begins testing Omicron-specific COVID-19 booster shot By - January 26, 2022 0 213 Facebook Twitter Pinterest WhatsApp Health By Amruta Khandekar Reuters 0:31Moderna says COVID-19 booster shot appears effective against Omicron variant WATCH: Moderna says COVID-19 booster shot appears effective against Omicron variant – Dec 20, 2021 Advertisement Advertisement