A 36-year-old man developed a disease with acute onset 6 hours ago. The patient presents with pain in the epigastric, ileocecal, and paraumbilical areas, vomiting, weakness, nausea, and body temperature of 38,5°C. Stool is liquid, profuse, frequent, retains fecal nature, foul-smelling, frothy, colored dark green. The stomach is moderately distended and painful on palpation. The patient attributes his disease to eating raw chicken eggs one day before the clinical signs of the disease appeared. What is the most likely diagnosis?