Analyse @CDCgov's tweets
#COVID19 vaccines continue to work well to help prevent severe illness, hospitalization, and death.
Scientists have seen some reduced protection in certain groups over time and have recommended booster shots to strengthen protection for those groups: https://t.co/77CTFuJFcO. https://t.co/zjeaC5PhPv
Scientists have seen some reduced protection in certain groups over time and have recommended booster shots to strengthen protection for those groups: https://t.co/77CTFuJFcO. https://t.co/zjeaC5PhPv