The rotavirus vaccine typically starts at what age?

• A. At birth
• B. At 4 weeks
• C. In infancy, usually at 2 months (series may be 2 or 3 doses depending on product)
• D. At 6 months

Answer: (C)

Rotavirus vaccination is given to healthy infants to protect against rotavirus gastroenteritis, and it is started in infancy, typically around 2 months of age. The exact number of doses depends on the product: one product is given in two doses at roughly 2 and 4 months, while another product is given in three doses at 2, 4, and 6 months. The series should be completed by about 6–8 months of age, so starting around 2 months ensures all doses are given within the recommended window. Starting later or finishing past the allowed age window can reduce effectiveness and complicate the schedule.