CNA Practice Test
Infection controlQuestion 1127 of 1700

Which group is at higher risk for infection because of a weak or immature immune system?

  1. Teens and young adults who are in good health
  2. Adults aged 30 to 50 who exercise often
  3. Children between 5 and 12 years old
  4. Infants up to 2 years and adults 65 or older
Show answer

Correct answer: Infants up to 2 years and adults 65 or older

Very young and older people fight infection less well.

Source: Nursing Assistant (Reuter), 4.2: Chain of Infection

Practice infection control

Questions last reviewed: 18 October 2026