In a population of 100000, 100 people have pulmonary tuberculosis. Out of 100 people, 10 died . What is the case fatality rate of TB-

Ans. is 'a' i.e., 5% CFR =Total no. of deaths due to a disease--------------------------------Total no. of cases of the same diseasex 100 CFR due to TB =5------100x 100 = 5%.