A 20-Year-Old Intravenous Drug User Develops Osteomyelitis of the Elbow

A 20-year-old intravenous drug user develops osteomyelitis of the elbow. In the emergency room, she confesses to licking the hypodermic needle to make it easier to insert into her skin. Which of the following organisms is most likely to be the cause of her osteomyelitis?

A) A member of the Enterobacteriaceae
B) A gram-positive cocci that is catalase positive and coagulase negative
C) An oxidase-positive, gram-negative rod that produces pyocyanin
D) An oxidase-positive, catalase-negative, gram-negative coccobacillus that pits the agar