Texas Registered Sanitarian - Quick Epidemiology Review |21 Questions| With Correct Answers.

What is a cross-sectional study? {Ans: A sample of persons from a population is enrolled and their exposures and health outcomes are measured simultaneously. The cross-sectional study tends to assess the presence (prevalence) of the health outcome at that point of time without regard to duration.}What is a common-source outbreak? {Ans: A common-source outbreak is one in which a group of persons are all exposed to an infectious agent or a toxin from the same source}What is a pandemic? {Ans: Pandemic refers to an epidemic that has spread over several countries or continents, usually affecting a large number of people}What is epidemiology? {Ans: Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems.}What does it mean when a disease is sporadic? {Ans: A sporadic disease occurs infrequently or irregularly}What is a case-control study? {Ans: In a case-control study, investigators start by enrolling a group of people with disease (at CDC such persons are called case-patients rather than cases, because case refers to occurrence of disease, not a person). As a comparison group, the investigator then