Immunization Schedules & Vaccine Administration Flashcards

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

Answer: 2 doses at least 4 weeks apart

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

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

Answer: HPV

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.

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

Answer: Tdap and influenza

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

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

Answer: 1 inch (2.5 cm)

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

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

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

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

An adolescent received a MenACWY vaccine at age 11. When is the booster dose recommended?

Answer: At age 16

ACIP recommends a MenACWY booster at age 16 for adolescents who received the first dose at 11–12 years.

Which route of administration is used for the oral rotavirus vaccine?

Answer: Oral

Rotavirus vaccines (Rotarix and RotaTeq) are administered orally, not by injection.