PLE-3172

A 26-year-old female was brought for consultation due to 4 days of diarrheal episodes accompanied by abdominal pain. Physical examination showed a blood pressure of 100/60, a pulse rate of 97 beats per minute, a respiratory rate of 21, and a body temperature of 38.3 degrees Celsius. Abdominal examination revealed direct tenderness in all four quadrants, with no rebound tenderness or organomegaly noted. Fecalysis showed a large number of fecal leukocytes and red blood cells. Culture revealed a nonmotile, non lactose fermenter, non H2S producer. Which of the following characteristics is true about the causative agent?