system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Serial interval is?
assistant
The correct answer is  SERIAL INTERVAL is the gap in time between the onset of the primary case and the secondary case.it helps to get a distribution of secondary cases from which we can guess the incubation period of diseasered:park's textbook of preventive and social medicine,22 nd edition,pg no 96