The best way to prevent varicella or chickenpox is to get vaccinated. According to the Centers for Disease Control and Prevention or CDC, immunization against the varicella virus gives you complete protection against this highly contagious disease, especially if you received the recommended doses.
In children, the varicella vaccine is typically given in two doses. The first dose is given when they are between 12 and 15 months old, and the second dose is given when they are between 4 and 6 years of age. However, if your child missed these doses, know that he can still have them. The catch-up two varicella vaccine doses are typically given to unvaccinated older children at least 3 months apart when they are between 7 and 12 years old and at least 4 weeks apart when they are older than 13 years old.