What is the recommended age for administering the live varicella vaccine?

The recommended age for administering the live varicella vaccine is 12-15 months and again at 4-6 years. This schedule is designed to provide the best immunological protection against varicella (chickenpox) during early childhood when the risk of infection is higher.

By initiating vaccination at 12-15 months, the vaccine can effectively stimulate the immune response before children are exposed to the virus. The second dose, given between 4-6 years, serves to boost immunity, ensuring that most children achieve long-lasting protection against chickenpox and its associated complications. This two-dose schedule is endorsed by public health authorities to help curtail the spread of varicella within communities.

The other options do not align with the current guidelines for the varicella vaccine. Administering the vaccine too early or too late in childhood may not provide adequate immunity prior to the high-risk exposure periods. Therefore, the timing of the doses is crucial for effective immunization.