APHA Immunization Schedules & Vaccine Administration 3

Question 1

A 12-year-old has no documentation of varicella vaccination or prior disease. How many doses of varicella vaccine are required?

Accepted Answer

2 doses at least 4 weeks apart

Answer

Children aged 7 years and older who have never had varicella require 2 doses of varicella vaccine separated by at least 4 weeks.

Question 2

Which vaccine requires a 3-dose schedule when the first dose is given at age 15 years or older?

Accepted Answer

HPV

Answer

HPV vaccine requires a 3-dose series (0, 1–2, and 6 months) when initiated at age 15 or older, whereas 2 doses suffice if started before age 15.

Question 3

A pregnant patient at 27 weeks gestation asks about vaccines. Which is recommended during every pregnancy?

Accepted Answer

Tdap and influenza

Answer

Tdap (preferably at 27–36 weeks) and influenza (inactivated) are recommended during every pregnancy to protect the infant.

Question 4

During simultaneous vaccine administration, what is the minimum distance between injection sites?

Accepted Answer

1 inch (2.5 cm)

Answer

Injection sites should be separated by at least 1 inch (2.5 cm) to allow attribution of local reactions to the correct vaccine.

Question 5

A 65-year-old patient is due for pneumococcal vaccination and has never received any pneumococcal vaccine. What is the current ACIP recommendation?

Accepted Answer

PCV15 followed by PPSV23 at least 1 year later, or PCV20 alone

Answer

ACIP recommends PCV15 followed by PPSV23 one year later, or a single dose of PCV20, for pneumococcal-naive adults aged 65 and older.

(APHA) American Public Health Association Immunization Certification Practice Test