Vaccines and Immunoprophylaxis · USMLE Step 1

A patient with chronic lung disease receives the annual influenza vaccine. Which formulation is recommended for adults?

  1. Live attenuated intranasal vaccine
  2. Inactivated intramuscular vaccine
  3. Conjugate vaccine
  4. DNA vaccine
Show answer and explanation

Correct answer: Inactivated intramuscular vaccine

Adults, especially those with chronic conditions, receive the inactivated influenza vaccine. The live intranasal vaccine is contraindicated in many adults.

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