Practice Test Geeks(APHA) APhA Pharmacy-Based Immunization Certificate Practice Test
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Immunization Pharmacology & Vaccine Science Flashcards

6 cards from real APHA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Immunization Pharmacology & Vaccine Science flashcards as text

  1. What is the role of memory T cells generated by vaccination?

    Answer: They provide rapid, enhanced immune response upon re-exposure to the antigen

    Memory T cells persist long-term after vaccination and mount a faster, stronger immune response upon subsequent encounter with the same antigen.

  2. A pharmacist notes that a vial of reconstituted varicella vaccine has been at room temperature for 45 minutes. What should be done?

    Answer: Discard the vaccine because reconstituted varicella must be used within 30 minutes

    Reconstituted varicella vaccine must be administered within 30 minutes; after that time, it must be discarded due to rapid loss of potency.

  3. Which of the following best describes the difference between efficacy and effectiveness of a vaccine?

    Answer: Efficacy is measured in controlled trials; effectiveness is measured in real-world conditions

    Vaccine efficacy is determined in randomized controlled trials under ideal conditions, while effectiveness is measured in real-world populations after licensure.

  4. What is the function of thimerosal as a vaccine excipient?

    Answer: It is an ethylmercury-based preservative used in multi-dose vials to prevent microbial contamination

    Thimerosal is an ethylmercury-containing preservative added to multi-dose vaccine vials to prevent bacterial and fungal contamination between doses.

  5. Which vaccine requires a two-dose primary series separated by at least 4 weeks for immunologically naive adults?

    Answer: MMR (measles, mumps, rubella)

    MMR requires two doses for immunologically naive adults, with the second dose given at least 4 weeks after the first to ensure adequate seroconversion for all three antigens.

  6. What is the pharmacological basis for the Jarisch-Herxheimer-like reaction sometimes confused with vaccine reactions?

    Answer: It is a cytokine-mediated systemic inflammatory response, not a true vaccine adverse effect

    Systemic post-vaccination reactions (fever, malaise) are cytokine-mediated inflammatory responses reflecting normal immune activation, not toxic or allergic effects.