The nurse is working in a primary care setting. Which clients should the nurse identify as being at high risk for influenza or its complications? Select all that apply.
A) A 25-year-old pregnant woman at 20 weeks' gestation
B) A 65-year-old woman
C) A 3-year-old with cystic fibrosis
D) A 35-year-old man with a severe allergy to eggs
E) A 20-year-old healthcare worker