Bacterial Infections USMLE Step 1 Practice Question
A 22-year-old man presents with 3 days of fever (38.9°C), abdominal cramping, and bloody diarrhea after consuming undercooked chicken. Stool culture grows Campylobacter jejuni. Gastrointestinal symptoms resolve, but 2 weeks later he develops ascending weakness, areflexia, and mild paresthesias. Nerve conduction studies show prolonged distal latencies and slowed conduction velocities consistent with demyelination. He denies recent vaccination. Which organism most likely triggered this patient's neurologic condition?
Answer choices
- AEnterotoxigenic Escherichia coli
- BShigella sonnei
- CSalmonella typhi
- DCampylobacter jejuniCorrect answer
- EYersinia pestis
- FVibrio cholerae
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