Epidemiologists

Summary

What Epidemiologists Do About this section

Epidemiologists monitor infectious diseases, bioterrorism threats, and other problem areas for public health agencies.

Epidemiologists are public health professionals who investigate patterns and causes of disease and injury in humans. They seek to reduce the risk and occurrence of negative health outcomes through research, community education and health policy.

Duties

Epidemiologists typically do the following:

• Plan and direct studies of public health problems to find ways to prevent and treat them if they arise
• Collect and analyze data—through observations, interviews, and surveys, and by using samples of blood or other bodily fluids—to find the causes of diseases or other health problems
• Communicate their findings to health practitioners, policymakers, and the public
• Manage public health programs by planning programs, monitoring their progress, analyzing data, and seeking ways to improve the programs in order to improve public health outcomes
• Supervise professional, technical, and clerical personnel

Epidemiologists collect and analyze data to investigate health issues. For example, an epidemiologist might collect and analyze demographic data to determine who is at the highest risk for a particular disease. They also may research and investigate the trends in populations of survivors of certain diseases, such as cancer, so that effective treatments can be identified and repeated across the population.

Epidemiologists typically work in applied public health or in research. Applied epidemiologists work for state and local governments, addressing public health problems directly. They often are involved with education outreach and survey efforts in communities. Research epidemiologists typically work for universities or in affiliation with federal agencies, such as the Centers for Disease Control and Prevention (CDC) or the National Institutes of Health (NIH).

Epidemiologists who work in private industry commonly conduct research for health insurance companies or pharmaceutical companies. Those in nonprofit companies often do public health advocacy work. Epidemiologists involved in research are rarely advocates, because scientific research is expected to be unbiased.

Epidemiologists typically specialize in one or more of the following public health areas:

• Infectious diseases
• Chronic diseases
• Maternal and child health
• Public health preparedness and emergency response
• Environmental health
• Injury
• Occupational health
• Oral health
• Substance abuse
• Mental health

For more information on occupations that concentrate on the biological workings of disease or the effects of disease on individuals, see the profiles for biochemists and biophysicists, medical scientists, microbiologists, and physicians and surgeons.

Work Environment About this section

Field work may require interaction with sick patients, yet safety precautions ensure that the likelihood of exposure to disease is minimal.

Epidemiologists held about 8,000 jobs in 2019. The largest employers of epidemiologists were as follows:

Epidemiologists typically work in offices and laboratories at health departments for state and local governments, in hospitals, and at colleges and universities. Epidemiologists are also employed in the federal government by agencies such as the Centers for Disease Control and Prevention (CDC). Work environments can vary widely, however, because of the diverse nature of epidemiological specializations. Epidemiologists also may work in clinical settings or in the field, where they support emergency actions.

Most epidemiologists spend their time studying data and reports in an office setting. Work in laboratories and the field tends to be delegated to specialized scientists and other technical staff. In state and local government public health departments, epidemiologists may be more active in the community and may need to travel to support community education efforts or to administer studies and surveys.

Because modern science has greatly reduced the amount of infectious disease in developed countries, infectious disease epidemiologists are more likely to travel to remote areas and developing nations in order to carry out their studies. Epidemiologists encounter minimal risk when they work in laboratories or in the field, because they have received appropriate training and take extensive precautions before interacting with samples or patients.

Work Schedules

Most epidemiologists work full time and have a standard work schedule. Occasionally, epidemiologists may have to work long or irregular hours in order to complete fieldwork or tend to duties during public health emergencies.

How to Become an Epidemiologist About this section

Epidemiologists need at least a master’s degree from an accredited postsecondary institution.

Epidemiologists need at least a master’s degree from an accredited college or university. Most epidemiologists have a master’s degree in public health (MPH) or a related field, and some have completed a doctoral degree in epidemiology or medicine.

Education

Epidemiologists typically need at least a master’s degree from an accredited college or university. A master’s degree in public health with an emphasis in epidemiology is most common, but epidemiologists can earn degrees in a wide range of related fields and specializations. Epidemiologists who direct research projects—including those who work as postsecondary teachers in colleges and universities—often have a Ph.D. or medical degree in their chosen field.

Coursework in epidemiology includes classes in public health, biological and physical sciences, and math and statistics. Classes emphasize statistical methods, causal analysis, and survey design. Advanced courses emphasize multiple regression, medical informatics, reviews of previous biomedical research, comparisons of healthcare systems, and practical applications of data.

Many master’s degree programs in public health, as well as other programs that are specific to epidemiology, require students to complete an internship or practicum that typically ranges in length from a semester to a year.

Some epidemiologists have both a degree in epidemiology and a medical degree. These scientists often work in clinical capacities. In medical school, students spend most of their first 2 years in laboratories and classrooms, taking courses such as anatomy, biochemistry, physiology, pharmacology, psychology, microbiology, and pathology. Medical students also have the option to choose electives such as medical ethics and medical laws. They also learn to take medical histories, examine patients, and diagnose illnesses.

Important Qualities

Communication skills. Epidemiologists must use their speaking and writing skills to inform the public and community leaders about public health risks. Clear communication is required for an epidemiologist to work effectively with other health professionals.

Critical-thinking skills. Epidemiologists analyze data to determine how best to respond to a public health problem or an urgent health-related emergency.

Detail oriented. Epidemiologists must be precise and accurate in moving from observation and interview to conclusions.

Math and statistical skills. Epidemiologists may need advanced math and statistical skills to design and administer studies and surveys. Skill in using large databases and statistical computer programs may also be important.

Teaching skills. Epidemiologists may be involved in community outreach activities that educate the public about health risks and healthy living.

Pay About this section

The median annual wage for epidemiologists was $74,560 in May 2020. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $49,140, and the highest 10 percent earned more than $126,040.

In May 2020, the median annual wages for epidemiologists in the top industries in which they worked were as follows:

Most epidemiologists work full time and have a standard work schedule. Occasionally, epidemiologists may have to work long or irregular hours in order to complete fieldwork or tend to duties during public health emergencies.

Job Outlook About this section

Employment of epidemiologists is projected to grow 5 percent from 2019 to 2029, faster than the average for all occupations.

Many jobs for these workers are in state and local governments, where they are needed to help respond to emergencies and to provide public health services. However, because epidemiological and public health programs are largely dependent on public funding, budgetary conditions may directly impact employment growth.

Demand for epidemiologists in hospitals is expected to increase as more hospitals join programs such as the National Healthcare Safety Network and realize the benefits of strengthened infection control programs.

Job Prospects

Interest in public health and epidemiology has increased over the past decade. The number of master’s degree programs in public health specializing in epidemiology, as well as the number of graduates from these programs, has increased. Some entrants are finding strong competition for jobs, but applicants who are willing to work in any of the various specialties found in this occupation, rather than those tied to one specialty, may have less difficulty finding work. Because epidemiology is a diverse field, opportunities can generally be found if one takes a broad view.

State & Area Data About this section

Occupational Employment Statistics (OES)

The Occupational Employment Statistics (OES) program produces employment and wage estimates annually for over 800 occupations. These estimates are available for the nation as a whole, for individual states, and for metropolitan and nonmetropolitan areas. The link(s) below go to OES data maps for employment and wages by state and area.

• Epidemiologists

Projections Central

Occupational employment projections are developed for all states by Labor Market Information (LMI) or individual state Employment Projections offices. All state projections data are available at www.projectionscentral.com. Information on this site allows projected employment growth for an occupation to be compared among states or to be compared within one state. In addition, states may produce projections for areas; there are links to each state’s websites where these data may be retrieved.

CareerOneStop

CareerOneStop includes hundreds of occupational profiles with data available by state and metro area. There are links in the left-hand side menu to compare occupational employment by state and occupational wages by local area or metro area. There is also a salary info tool to search for wages by zip code.

Contacts for More Information About this section

For more information about epidemiologists, visit

American College of Epidemiology

Council of State and Territorial Epidemiologists

The Society for Healthcare Epidemiology of America

For more information about epidemiology careers in the federal government, visit

Centers for Disease Control and Prevention

National Institutes of Health

For public health–related information, visit

American Epidemiological Society

American Public Health Association

Association of State and Territorial Health Officials

National Academy for State Health Policy

Public Health Foundation

CareerOneStop

For a career video on epidemiologists, visit

Epidemiologists

O*NET

Epidemiologists