Micro| Campylobacter Jejuni
3.19 Campylobacter Jejuni Microbiology review for the USMLE Step 1 exam Campylobacter jejuni is a gram-negative, comma-shaped bacteria that causes diarrheal illness It is the most common cause of bacterial diarrhea in the US It can be distinguished from other gram-negative, comma-shaped bacteria by its desired culture temperature of 42C/107F It is mostly acquired through consumption of raw milk, undercooked poultry, and contaminated water 90% of cases in the US occur during the summer months, likely due to increased grilling of poultry Symptoms include high fever, rigors, dizziness, body aches, diarrhea (more than 10 stools a day), abdominal cramping, and nausea Complications include Guillain-Barré syndrome (GBS) and reactive arthritis Diagnosis is typically made through a stool culture Treatment typically includes supportive care and replenishing fluids and electrolytes, with antibiotics (macrolides) used for more severe cases.