Yes, clinical trials have proven that the vaccine is safe in children as young as six months old. Children ages six months to eleven years had mild and temporary side effects like those experienced by people ages 12 and older. Getting COVID-19 presents significant risks to children and families; getting the vaccine helps you stay safe.
Tens of thousands of volunteers were involved in clinical trials for the vaccines. The clinical trials showed that the COVID-19 vaccines are remarkably safe and effective before they got FDA emergency use authorization.
More than half of all kids twelve to seventeen years old and nearly one-third of all kids five to eleven years old in the U.S. have been fully vaccinated! That's more than 23 million kids who have had both of their doses of COVID-19 vaccine. The vaccines continue to be monitored very closely. In fact, the Centers for Disease Control and Prevention (CDC) say that COVID-19 vaccines will have "the most intensive safety monitoring in U.S. history."
You can find additional information on the safety of COVID-19 vaccination at COVID-19 Vaccine Safety in Children and Teens | CDC