Repliessteem.history (78)in newshealth • 3 years agoRE: Pfizer says it's time for a Covid booster; FDA and CDC say not so fastHello welcome to Steemit world! I'm @steem.history, who is steem witness. This is a recommended post for you. Newcomers Guide and The Complete Steemit Etiquette Guide (Revision 2.0) and…