A nurse is educating a new grandmother who will be providing regular childcare for her newborn grandchild. Which vaccine is most important for the nurse to recommend the grandmother receive to protect the infant?

✓ Correct Answer: Option B

Tdap is crucial for individuals in close contact with infants to prevent pertussis (whooping cough), which can be severe and life-threatening in newborns before they are old enough to receive their own DTaP series.