In a village with population of 5000, 50 people get affected by a disease and 10 of the affected died. What is case fatality rate?

Correct option is D

Case Fatality Rate (CFR) is calculated by the formula: (Number of deaths / Number of cases) × 100. Here, (10/50) × 100 = 20%. It represents the proportion of deaths among the identified cases of a particular disease within a given period.
Explanation for each option: (a) 10%: Incorrect. 10 deaths out of 50 cases would result in a 20% fatality rate, not 10%. (b) 2%: Incorrect. 2% would imply a much lower number of deaths relative to the number of cases, which is not supported by the given data. (c) 0.5%: Incorrect. This value would be appropriate if deaths were counted against the total village population, but CFR is deaths among cases only. (d) 20%: Correct. 10 deaths among 50 cases give a CFR of 20%, indicating the correct understanding of disease severity among the affected individuals.