evidence: The federal Centers for Disease Control Prevention and the Food and Drug Administration maintain a Vaccine Adverse Events Reporting System (VAERS). Anyone can report "adverse events" to a vaccine — as in possible side effects — to VAERS. The reports are not verified and do not indicate whether an adverse event is linked to or caused by a vaccine. Regarding COVID-19, vaccines have been administered to millions of people across Europe and the United States. There hasn’t been any definitive proof that a COVID-19 vaccination led to someone’s death.