https://www.straitstimes.com/world/united-states/moderna-says-booster-dose-of-its-covid-19-vaccine-appears-protective-against-omicron?utm_campaign=stfb&utm_medium=social&utm_source=facebook&fbclid=IwAR26_zEAW-L0uTy-8r2p26TGIAh1EH9oyStzloft8HaSaRYVUdgp98iIbyk
精彩评论