The primary care NP performs a physical examination on an 89-year-old patient who is about to enter a skilled nursing facility. The patient reports having had chickenpox as a child. The NP should:
a. obtain a varicella titer.
b. administer the Varivax vaccine.
c. give the patient the Zostavax vaccine.
d. plan to prescribe Zovirax if the patient is exposed to shingles.
