What immunizations are indicated for a 15-month-old infant who has no history of chickenpox infection?

For a 15-month-old infant with no history of chickenpox infection, the appropriate immunizations include DTaP, IPV, MMR, and varicella.

At this age, the DTaP vaccine is administered to protect against diphtheria, tetanus, and pertussis. IPV is the inactivated poliovirus vaccine that is crucial for preventing polio. The MMR vaccine is essential to protect against measles, mumps, and rubella, and typically given around 12-15 months of age. Lastly, the varicella vaccine provides protection against chickenpox, which is especially important for a child with no prior infection.

These vaccinations align with the recommended immunization schedule, which emphasizes the significance of these vaccines as the child begins to encounter more social interactions and is at increased risk for these diseases. Other choices may include vaccinations that are not necessary at this specific age or do not include the required varicella vaccine for a child without a chickenpox infection history. Thus, the selection reflects those vaccines that are timely and appropriate for both age and prior health history.