This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
In a outbreak of cholera in a village of 2,000 population, 20 cases have occurred and 5 died. Case fatality rate is 
Select and explain. 
A. 1%, B. 0.25%, C. 5%, D. 25%
D: 25%
Answer: D: 25% 
Explanation: CFR= (Total number of deaths due to a paicular disease / Total number of cases due to the same disease ) x100CFR=5/20x100CFR= 25 %(Refer: K. Park's Textbook of Preventive and Social medicine, 24th edition, pg no: 63)