Social & Preventive Medicine Incidence of a disease is 4 cases per 1000 of population per year with duration of 2 years. Calculate the prevalence? A 8/1000 B 4/1000 C 2/1000 D 6/1000 💡 Explanation Incidence of a disease is 4 cases per 1000 of population per year with duration of 2 years. Calculate the prevalence? ✓ Correct Answer: A. 8/1000