Social & Preventive Medicine Generation time in epidemiology is defind as – A The interval between marriage and the bih of first child B The interval of time between primary case and secondary cases C The interval of time between invasion by infectious D agent and appearance of first sign or symptom of the disease in question 💡 Explanation Generation time in epidemiology is defind as - ✓ Correct Answer: B. The interval of time between primary case and secondary cases