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Infectious Disease Flashcards

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

Read the first 7 Infectious Disease flashcards as text

  1. Per IDSA/SHEA guidelines, which agent is no longer recommended as first-line therapy for an initial episode of Clostridioides difficile infection in adults when alternatives are available?

    Answer: Oral metronidazole

    Metronidazole is now reserved for nonsevere cases only when fidaxomicin and oral vancomycin are unavailable.

  2. A healthy adult has nonpurulent cellulitis of the lower leg without systemic signs. What is the most appropriate oral antibiotic?

    Answer: Cephalexin

    Nonpurulent cellulitis is usually streptococcal, so a beta-lactam such as cephalexin is first-line.

  3. A patient has a 3-cm fluctuant abscess with surrounding erythema in a community with high MRSA prevalence. What is the best management?

    Answer: Incision and drainage plus trimethoprim-sulfamethoxazole

    Purulent skin infections require incision and drainage, with MRSA-active antibiotics such as TMP-SMX or doxycycline when indicated.

  4. A 40-year-old presents 6 hours after a cat bite to the hand. Which antibiotic is preferred for prophylaxis?

    Answer: Amoxicillin-clavulanate

    Amoxicillin-clavulanate covers Pasteurella multocida, anaerobes, and staphylococci common in cat bite wounds.

  5. An adult who completed a primary tetanus series has a deep puncture wound contaminated with soil; his last tetanus booster was 6 years ago. What is indicated?

    Answer: Td or Tdap booster

    For dirty wounds, a booster is indicated if more than 5 years have passed since the last dose in a fully immunized patient.

  6. A 72-year-old with COPD presents with fever, myalgias, and cough for 4 days, and rapid influenza testing is positive. What is the best management?

    Answer: Start oseltamivir now

    Antiviral treatment is recommended for high-risk patients regardless of symptom duration.

  7. A 55-year-old who had shingles 2 years ago asks about zoster vaccination. What is the recommendation?

    Answer: Two doses of recombinant zoster vaccine 2 to 6 months apart

    Recombinant zoster vaccine is recommended for adults 50 and older in two doses regardless of prior shingles.

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Sources & references

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  1. aanpcert.org — Eligibility, exam format, passing score, retake policy, score release, test dates, time limit, score validity, test delivery, registration · verified Nov 2026
  2. aanp.org — Eligibility · verified Oct 2026