Which vaccine is part of the 4-6 year booster series?

• A. Varicella (VAR)
• B. Rotavirus
• C. Hepatitis B
• D. Meningococcal

Answer: (A)

At this age, the booster visit focuses on refreshing immunity to vaccines given earlier, with one specifically timed for the 4–6 year window: Varicella. The Varicella vaccine is given in two doses, the first around 12–15 months and the second at 4–6 years, to ensure strong, durable protection before school entry.

Rotavirus is administered in infancy (typically at 2 and 4 months, sometimes a third dose at 6 months, depending on the product) and is not scheduled for the 4–6 year visit. Hepatitis B is usually completed by 6–18 months, with no routine booster at 4–6 years. Meningococcal vaccination is generally given later, around 11–12 years (with certain risk-based exceptions), not as part of the 4–6 year booster series.

So the vaccine that belongs in the 4–6 year booster is Varicella.