Yes, their page describing adverse events after vaccination has statistics on the rarity of events: https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/ad

Yes, their page describing adverse events after vaccination has statistics on the rarity of events: https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/adverse-events.html https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/ad... For example: > Anaphylaxis after COVID-19 vaccination is rare. It has occurred at a rate of approximately 5 cases per one million vaccine doses administered. > Myocarditis and pericarditis after COVID-19 vaccination are rare... Data from VSD and from VAERS indicate that rates of myocarditis after COVID-19 vaccination are highest among males in their late teens and early 20s, usually following the second dose of the vaccine. > Thrombosis with thrombocytopenia syndrome (TTS) has been rarely observed after J&J/Janssen COVID-19 vaccination and has occurred in approximately 4 cases per one million doses administered.