A 12-month-old boy is brought to the clinic for a routine well-child evaluation. His mother, who is 18 weeks pregnant, reports that he is doing well but expresses concern that he is not yet walking independently. On evaluation, the infant is able to pull himself to a stand, cruises along the examination table, and uses a neat pincer grasp to pick up small objects. He babbles frequently, says "mama" and "dada" specifically to his parents, and plays peek-a-boo. The infant is up to date on all immunizations administered prior to 12 months of age. His mother asks if his required immunizations for today are safe for her unborn baby. Which of the following is the most appropriate management for this patient?
- AAdminister only inactivated vaccines today and postpone live-attenuated vaccines until after maternal delivery
- BAdminister all indicated age-appropriate vaccines and refer the child for evaluation of a gross motor delay
- Administer all indicated age-appropriate vaccines and provide routine developmental anticipatory guidanceAnswer
- DAdminister only inactivated vaccines today and refer the child for evaluation of a gross motor delay
- EAdminister all indicated age-appropriate vaccines but advise the pregnant mother to arrange alternative childcare for two weeks
Answer
Administer all indicated age-appropriate vaccines and provide routine developmental anticipatory guidance
At the 12-month well-child visit, children are scheduled to receive several vaccines, including their first doses of live-attenuated vaccines, namely the measles, mumps, and rubella (MMR) vaccine and the varicella vaccine. A common concern for parents is the safety of these vaccines when there is a pregnant woman in the household. According to guidelines, the presence of a pregnant household contact is not a contraindication to the administration of MMR or varicella vaccines to a healthy child. The MMR vaccine virus is not transmitted to close contacts. The varicella vaccine virus can theoretically be transmitted if the immunized child develops a post-vaccination vesicular rash, but this is exceptionally rare. Routine isolation is unnecessary unless a rash develops. Furthermore, the child's developmental milestones—cruising, using a neat pincer grasp, and saying 'mama' and 'dada' specifically—are perfectly appropriate for a 12-month-old, meaning routine anticipatory guidance is all that is required for developmental management.
Step-by-Step Solution
Key Concept
Live-attenuated vaccines (such as MMR and varicella) are completely safe and routinely indicated for immunocompetent children who have pregnant household contacts. Additionally, pulling to stand and cruising are normal gross motor milestones for a 12-month-old; independent walking is not strictly expected until 15 to 18 months of age.