This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Salmonella gastroenteritis is - \nSelect and explain. \nA. Mainly diagnosed by serology, B. Blood and mucus present in blood, C. Caused by animal products, D. All', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Caused by animal products Salmonella gastroenteritis (enterocolitis) It is a zoonotic disease. . The most impoant sources of infection are poultry, meat, milk and milk products. Of great concern are eggs and egg products. Salmonella can enter through the shell if eggs are left on contaminated chicken feed or feces and grow inside. . Pathogenesis is due to invasion of the bowel mucosa, not toxin mediated. . It may be caused by any salmonella except S.typhi. S. typhimurium is the most common species. Incubation period --> 6-48 hrs. . Clinically manifested as diarrhea, fever and abdominal pain. The diarrhea is usually characterized by loose, nonbloody stools. . Laboratory diagnosis is made by isolating the salmonella from feces. Treatment is symptomatic, antibiotic should not be used. Remember Enteric fever is a major problem in developing countries, while salmonella gastroenteritis is largely a problem for the developed nations.", 'role': 'assistant'}]