Answer: When you create a document in Microsoft Publisher or any desktop publishing program, in order for others to open and view the file they would normally have to have the same program. If they don't, there are ways you can convert your creation to a format that others can use.
For other uses, see Epidemiology (disambiguation). Epidemiology is the study and analysis of the patterns, causes, and effects of health and disease conditions in defined populations. It is the cornerstone of public health, and shapes policy decisions and evidence-based practice by identifying risk factors for disease and targets for preventive healthcare.
Section 1: Definition of Epidemiology. Students of journalism are taught that a good news story, whether it be about a bank robbery, dramatic rescue, or presidential candidate's speech, must include the 5 W's: what, who, where, when and why (sometimes cited as why/how).pidemiology 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 (1).