Children rarely have severe allergic reactions to the vaccine. The most common side effects are fatigue, muscle or joint pain, and fever. And just like adults, all keiki are monitored for 15-30 minutes after their vaccination by staff specifically trained to look for and respond to an unlikely allergic reaction.

SOURCE: https://yalehealth.yale.edu/covid-19-vaccine-faq-children-12-15-years-old (Yale University)

Updated 12/16/2021