COVID-19 Vaccine for Kids: What You Need to Know The COVID-19 vaccine is an important tool to keep kids safe from COVID-19. Vaccines are available for free for everyone 5 and older. Some kids may still get COVID after getting the vaccine, but being vaccinated reduces their risk of severe illness. Kids may have side effects like a sore arm, achy muscles, and tiredness that can last a day or two. Children who get the COVID vaccine are extremely unlikely to experience any serious problems. Talk with your child's doctor and learn more at mass.gov/CovidVaccineKids COVID-19 Vaccine for Kids: What You Need to Know The COVID-19 vaccine is an important tool to keep kids safe from COVID-19. Vaccines are available for free for everyone 5 and older. Some kids may still get COVID after getting the vaccine, but being vaccinated reduces their risk of severe illness. Kids may have side effects like a sore arm, achy muscles, and tiredness that can last a day or two. Children who get the COVID vaccine are extremely unlikely to experience any serious problems. Talk with your child's doctor and learn more at mass.gov/CovidVaccineKids