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': 'The interval time between receipt of infection and maximum infectivity of the host is known as: \nSelect and explain. \nA. Secondary attack rate, B. Incubation period, C. Generation time, D. Serial interval', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Secondary attack rate: It is the number of exposed individuals who develop a disease within the incubation period following exposure to a primary case. Serial interval: It is the time gap between the detection of the primary case and the secondary case in a communicable disease. Generation time: It is the interval time between receipt of infection and maximum infectivity of the host. Ref: Park 21st edition, page 95.', 'role': 'assistant'}]