What age is the second dose of the Varicella vaccine recommended?

The correct recommendation for the second dose of the Varicella vaccine is typically between the ages of 4 and 6 years old. This timing aligns with the standard immunization schedule for children, which aims to provide optimal protection against chickenpox. The first dose of the vaccine is usually administered around 12 to 15 months of age, and administering the second dose before a child enters school helps ensure they are properly protected as they begin to interact more with peers and participate in activities where transmission of the virus is more likely.

The rationale for this age range is based on clinical evidence showing that the second dose significantly increases immunity and establishes long-term protection. By ensuring vaccination is completed by this age, public health goals of reducing the incidence of chickenpox among school-aged children can be effectively met.