An Invitation to Health 16th Edition by Dianne Hales

تمرين 11

Public health officials define a pandemic as
A) a sudden rise in the incidence of a particular disease.
B) an atypically large number of people in a region suffering from the same disease.
C) a high proportion of the population over a wide geographic area suffering from the same disease.
D) more than 25 percent of the world's population suffering from the same disease.