system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 33-year-old man living in the United States recently consumed a meal mostly consisting of raw shellfish that his girlfriend brought on her trip to Asia. After 2 days, he experienced a sudden onset of diarrhea and vomiting with severe abdominal cramps while his girlfriend developed mild diarrhea just several hours later. The diarrhea was profuse, looked like rice water, and had a pungent fishy odor. He soon started to experience muscle cramps and weakness, together with a deep labored breathing pattern. They called an ambulance and were transported to a local hospital. Based on the symptoms and blue hue to the skin, the attending physician hospitalized the male patient, started an intravenous infusion, and sent a stool specimen to the clinical microbiology laboratory for analysis. The next day, yellow bacterial colonies were observed on thiosulfate-citrate-bile salts-sucrose agar (as shown on the image). If you were the microbiologist on call, what kind of bacterial morphology would you expect to see during microscopic evaluation of a gram-stain slide made from those bacterial colonies?
assistant
Comma-shaped rods