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: Social & Preventive Medicine
[{'content': 'True for epidemiological triad: March 2012 \nSelect and explain. \nA. Time, place, person, B. Agent, host, environment, C. Disease, prevention, treatment, D. Agent, man, disease', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: B i.e. Agent, host, environment Some impoant terms Epidemiological triad is a broader concept of disease causation that include the basic factors of agent, host and environment Germ theory of disease is generally referred to as one-to-one relationship between causal agent and disease. The disease model accordingly is: Disease agent Man Disease.', 'role': 'assistant'}]