COVID-19 vaccines have undergone – and continue to undergo – the most intensive safety monitoring in U.S. history. CDC continues to monitor all COVID-19 vaccines after they are authorized or approved for use with new and established safety monitoring systems. Parents and caregivers can register and enroll their child in v-safe, which provides personalized and confidential health check-ins after COVID-19 vaccination. Additionally, patients, caregivers, and vaccine providers can report serious health events occurring after vaccination to the Vaccine Adverse Event Reporting System (VAERS). CDC and FDA review VAERS data to identify potential safety concerns. CDC and FDA continue to monitor vaccines, keep people informed of findings, and use data to make COVID-19 vaccination recommendations.   Related page: Ensuring COVID-19 Vaccine Safety in the US