From the CDC: "COVID-19 vaccines are effective at preventing infection, serious illness, and death" https://www.cdc.gov/coronavirus/2019-ncov/vaccines/effectiv

From the CDC: "COVID-19 vaccines are effective at preventing infection, serious illness, and death" https://www.cdc.gov/coronavirus/2019-ncov/vaccines/effectiveness/why-measure-effectiveness/breakthrough-cases.html https://www.cdc.gov/coronavirus/2019-ncov/vaccines/effective... This study also mentions the same fact.