Which of the Following Individuals Is Most Prone to Infection

Which of the following individuals is most prone to infection with Bartonella henselae?

A) 28-year-old male, visiting the United States from Ecuador, presenting with acute fever and anemia
B) 7-year-old female, who was bitten by a feral kitten, presenting with swollen axillary lymph nodes
C) 20-year-old homeless male with persistent fever and bone, joint, and muscle pain
D) 37-year-old HIV-positive male with fever, chills, anorexia, weight loss. and large skin lesions