The administration of vaccines involves lots of CDC and FDA rules: age ranges, timing between doses, location, needle lengths, and so on. In the small print of the footnotes one can often find a number of “exceptions” that technically are part of the rules. For example, the CDC recently decided that an adolescent only needs two doses of HPV vaccine instead of three under certain circumstances.
Assume a 17-year- and 0-month-old male is in your office today. In which of the following scenarios should you administer a third HPV vaccine? (More than one may be correct.)
A. First dose given at age 15 years 0 months (15/0) and second dose at age 17 and 9 months (17/9)
B. First dose given age 14/0 and second dose given at age 14/4
C. First dose given at age 11/0 and second dose age 14/0
D. First dose given age 9/0 and second dose at age 16/0
E. He was diagnosed with Crohn disease at age 9/0 and started on Humira at age 12/0. He received first dose of HPV vaccine at age 11/0 and the second dose at age 14/0 while on Humira.
F. First dose given at age 11/0 and second dose at age 16/0. He has been on 25 mg of prednisone every other day since age 15/0.
G. First dose given at age 11/0 and second dose at age 16/0. Three months ago he was started on 25 mg of prednisone daily for persistent asthma.
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