At what age is the first dose of the varicella vaccine recommended for prevention of the disease?

The first dose of the varicella vaccine is recommended at 12 months of age for the prevention of chickenpox. This timing aligns with the routine immunization schedule established by health authorities, such as the Centers for Disease Control and Prevention (CDC). Administering the vaccine at this age is crucial because it helps to ensure that children have adequate protection against varicella before they encounter it in their environment, often during preschool years when exposure is more likely.

Vaccinating at 12 months also allows for the potential to administer a second dose later, typically between 4 to 6 years of age, which boosts immunity and enhances overall effectiveness. Other options, such as 2 months, 2 years, or 4 years, do not align with the recommended vaccination schedule. Vaccination at 2 months is too early for this specific vaccine, which needs to be given after the first birthday. Moreover, waiting until 2 years or 4 years is not optimal, as it leaves children unprotected during a higher risk period for exposure to the virus. Thus, administering the varicella vaccine at 12 months is a preventive measure that ensures better health outcomes for children.