Scientists at the CDC are examining the prevalence of whooping cough by county across the United States. They have sorted and organized cases on a variety of variables and are looking at which populations are most at risk. In which part of the epidemiological method are these scientists actively involved?
| a. Surveillance |
| b. Descriptive epidemiology |
| c. Analytic epidemiology |
| d. Intervention |
| e. Evaluation |
Answer: (B) Descriptive epidemiology
(Descriptive epidemiology includes the way of organizing and analyzing data in order to understand variations in disease frequency geographically and over time, and how disease (or health) varies among people based on a host of personal characteristics (person, place, and time).
Scientists at the CDC are examining the prevalence of whooping cough by county across the United...