A first dose of this vaccine should be given at 2 months of age and the second at 3 months of age; the vaccine should not be started in children of 15 weeks of age or older.

A first dose of this vaccine should be given at 2 months of age and the second at 3 months of age; the vaccine should not be started in children of 15 weeks of age or older.

• A. Diphtheria
• B. Vitamin A
• C. Rotavirus
• D. MMR

Answer: (C)

Rotavirus vaccination is given to healthy infants to prevent gastroenteritis from rotavirus and is taken orally in early infancy. The two-dose schedule described—first dose at about 2 months and second dose at about 3 months—is designed to provide protection before most children are exposed to the virus. There is a strict upper age limit for starting the vaccine: it should not be started in children who are 15 weeks of age or older. Starting later can reduce effectiveness and may raise safety concerns, so the vaccination window is kept very early. This combination of timing and age cutoff is specific to Rotavirus vaccination, which is why it fits the scenario.

Rotavirus vaccination is given to healthy infants to prevent gastroenteritis from rotavirus and is taken orally in early infancy. The two-dose schedule described—first dose at about 2 months and second dose at about 3 months—is designed to provide protection before most children are exposed to the virus. There is a strict upper age limit for starting the vaccine: it should not be started in children who are 15 weeks of age or older. Starting later can reduce effectiveness and may raise safety concerns, so the vaccination window is kept very early. This combination of timing and age cutoff is specific to Rotavirus vaccination, which is why it fits the scenario.