Posted: July 16th, 2017

A 16-year-old male from Los Angeles with end-stage renal disease is admitted to the hospital for evaluation of a febrile episode. Laboratory studies showed that the boy was hypogammaglobulinemic.

A 16-year-old male from Los Angeles with end-stage renal disease
is admitted to the hospital for evaluation of a febrile episode.
Laboratory studies showed that the boy was
hypogammaglobulinemic. A blood culture obtained on admission
was positive for faintly staining, curved, gram-negative rods from the
aerobic bottle only. An oxidase-positive, catalase-negative, motile,
helical, gram-negative rod was recovered on chocolate agar after 3
days of incubation at both 37°C and 42°C. This organism did not
grow on Campylobacter blood agar. What is the most probable
etiologic agent?
A. Campylobacter coli
B. Campylobacter upsaliensis
C. Helicobacter pylori
D. Vibrio metschnikovii