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NCLEX · Immunizations and Health Screening

Which vaccine is recommended annually for all adults?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

Influenza (flu) vaccine — recommended annually for everyone 6 months and older, because the flu virus changes each year and immunity from the prior year's vaccine declines

  1. A MMR
  2. B Influenza (flu) vaccine — recommended annually for everyone 6 months and older, because the flu virus changes each year and immunity from the prior year's vaccine declines
  3. C Hepatitis B (once only)
  4. D Varicella (once in adulthood if not immune)

Why this is the answer

Annual influenza vaccination: Recommended for: EVERYONE 6 months and older, annually; SPECIAL PRIORITY GROUPS (higher risk of severe flu): Adults 65+; Pregnant women; People with chronic conditions (heart disease, diabetes, asthma, kidney disease, immunocompromise); Healthcare workers (to protect themselves and patients).

Why annual: Influenza virus mutates rapidly; each year's vaccine is updated to match predicted circulating strains; immunity from prior year's vaccine declines; the vaccine is reformulated annually.

Timing: Ideally September-October before flu season peaks (usually December-February); but vaccine any time during flu season is better than none.

Contraindications: Previous severe allergic reaction to the vaccine or any of its components. Egg allergy: most people with egg allergy can receive most flu vaccines; consult an allergist for history of anaphylaxis to egg.

Source: NCLEX-PN, Annual Flu Vaccine Recommendation

Practice more questions

This question is from our NCLEX Practice Tests practice test. Take the full practice test to test your knowledge across all Immunizations and Health Screening and other topics.

Take the PN: Health Promotion and Maintenance practice test →

About this topic: Immunizations and Health Screening

Immunizations and health screening questions cover the childhood and adult vaccine schedules, contraindications, and the recommended screenings — blood pressure, cholesterol, cancer screening — by age and risk. This is one of 14 PN: Health Promotion and Maintenance questions on immunizations and health screening, each with a full explanation on a single study page.

New to this exam? Our NCLEX exam guide explains the format, scoring, and how to prepare.

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