At her well-child visit, which vaccines should a 4-month-old receive if she has already been given multiple previous vaccinations?

The recommended vaccines for a 4-month-old who has already received previous vaccinations are DTaP (Diphtheria, Tetanus, and Pertussis), Hib (Haemophilus influenzae type b), PCV13 (Pneumococcal conjugate vaccine), IPV (Inactivated poliovirus vaccine), and rotavirus vaccine. At this age, the infant is typically due for the second doses of these vaccines, as they are designed to boost immunity against these diseases in the early months of life.

DTaP helps protect against serious illnesses caused by diphtheria, tetanus, and pertussis. Hib is important for preventing infections caused by Haemophilus influenzae type b. PCV13 provides immune protection against pneumococcal infections, while IPV is crucial for poliomyelitis prevention. The rotavirus vaccine is vital for preventing severe gastroenteritis in infants.

The other options suggest vaccines that either are not due at this point in the child's vaccination schedule or include vaccines that are not recommended for a 4-month-old. For instance, HepB (Hepatitis B), MMR (Measles, Mumps, and Rubella), and varicella (chickenpox