A 6-month-old infant is brought to the pediatrician for recurrent colds. The child is fed formula, and the other family members have not been ill. The physician tells the mother that the child's immune system is not yet competent but will be about 60% of an adult system around age:
A) 8 months.
B) 9 months.
C) 10.5 months.
D) 12 months.

Question

Quizplus · Accepted Answer

A baby's immune system is not fully matured until around the age of one, so the best choice is D, 12 months. At this age, their immune system will be about 60% of an adult's system.

A 6-Month-Old Infant Is Brought to the Pediatrician for Recurrent