Entry-level epidemiology jobs focus on protecting public health through lab research and the study of disease data. In your role as an epidemiologist, you may examine the effects of infection by a virus, determine how biology impacts an organism's ability to resist disease, and provide consultation services to cities, companies, and organizations. This is an entry-level position, so your most important job is learning everything your employer teaches, such as the procedure for communicating and notifying people of health emergencies. Certain aspects like proper sanitation protocols are usually taught in school, but employers frequently test and review them to ensure you understand them. Epidemiologists often work in hospitals but have little or no direct contact with patients.