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Epidemiologist

Epidemiologists are disease detectives: they use data to find out who is getting sick, why, and what would stop it.

Median pay (US)

$87,220

2025 · $41.93 an hour

O*NET source

Job outlook

Much faster than average

O*NET's band for this category is 7% or higher, 2024-2034

O*NET source

To get in the door

Graduate or professional degree

Most of these occupations require graduate school.

Openings a year

800

projected, nationally

O*NET source

What the day actually looks like

  • Pull and clean data from case reports, lab results, interviews, and surveys, then run the numbers to see who is getting sick and where. O*NET lists R, Python, SQL, Stata, Tableau, ArcGIS, and CDC WONDER among the tools epidemiologists actually use.
  • Work a cluster: call cases and contacts, ask what they ate, where they worked, who they were near, and build a timeline that either supports a theory or kills it. BLS lists collecting data from observations, interviews, surveys, and samples of blood or other bodily fluids as a core duty.
  • Watch surveillance systems for signals, and report reportable diseases up the chain to the state and to CDC. O*NET lists monitoring and reporting infectious disease incidents to health agencies as a standing task.
  • Write it down for people who are not statisticians: a memo for a health commissioner, a fact sheet for a school, a paper for a journal. BLS names communicating findings to health practitioners, policymakers, and the public as a duty.
  • Run the machinery that keeps the work alive: plan and monitor programs, supervise staff, and write grant proposals to fund the research (BLS OOH duties list).

Skills you need first

  • Algebra now, statistics as soon as you can get it. This job runs on rates, ratios, and probability, and BLS lists math and statistical skills as an important quality, including skill with large databases and statistical software.
  • Biology, especially how infection, immunity, and chronic disease work in a body and then in a population.
  • Writing and speaking to non-experts. BLS lists communication skills first among important qualities, because a finding a school board cannot follow does nothing.
  • Comfort with a spreadsheet now and with code later. O*NET lists R, Python, SQL, Excel, Stata, and ArcGIS as technology skills for this occupation.
  • Precision. BLS lists detail oriented as an important quality: the whole chain from interview to conclusion has to hold up under challenge.
  • Willingness to talk to strangers about hard things, including people who are sick, scared, or angry at the health department.

How long people stay

No epidemiologist-only tenure data was found, so treat this as workforce-level evidence. PH WINS 2024, the de Beaumont Foundation and ASTHO survey of the state and local governmental public health workforce, reports that 54 percent of staff have been at their current agency five years or less, 41 percent have been in public health five years or less, and 25 percent are age 35 or under. On staying: 75 percent report an intention to stay in the next year, and among those planning to leave, more than a quarter plan to stay somewhere in government public health. On strain: 71 percent report at least one symptom of burnout and 20 percent report near-constant symptoms. On hours, O*NET reports 53 percent of epidemiologists work more than 40 hours a week. BLS says epidemiologists who work full time typically have a standard schedule, with irregular hours for fieldwork or during a public health emergency, and that physical risk is minimal because of training and precautions.

Where it is needed, and the different ways to do it

Real demand, small occupation, and a documented staffing hole, with one honest caveat. BLS counted about 12,300 epidemiologist jobs in the US in 2024 and projects 16 percent growth from 2024 to 2034 against 3 percent for all occupations, with roughly 800 openings a year, many of them from people transferring out or retiring, and a projected employment change of about 2,000 jobs over the decade. On the shortage claim, the source is the de Beaumont Foundation and the Public Health National Center for Innovations: their analysis estimates that state and local health departments need to hire a minimum of 80,000 more full-time equivalent positions, an increase of nearly 80 percent, just to provide adequate infrastructure and a minimum package of public health services, and notes that state and local health departments lost 15 percent of their essential staff over the prior decade. That 80,000 figure covers the whole public health workforce, not epidemiologists alone. The caveat comes from BLS itself: because epidemiological and public health programs largely depend on public funding, government budgets may affect employment of these workers. Strong percentage growth on a base of 12,300 jobs is still a real but narrow door, not a mass-hiring field.

State health department

The biggest employer by far. BLS reports 34 percent of epidemiologist jobs are in state government, excluding education and hospitals (2024). In Ohio that means the Ohio Department of Health: statewide surveillance, outbreak response, and the reports that counties and CDC rely on.

County or city health department

22 percent are in local government, excluding education and hospitals (BLS, 2024). This is the closest-to-home version of the job, and the one Cleveland students can actually see: cluster calls, foodborne outbreaks, lead, overdose data, school reports. BLS describes applied epidemiologists at this level as often addressing problems through community education and survey work.

Hospital infection prevention

10 percent work in hospitals, state, local, and private (BLS, 2024). The work is tracking healthcare-associated infections and stopping spread inside the building. O*NET lists Infection Control Practitioner and Nurse Epidemiologist among reported job titles for this occupation.

University or federal research

BLS says research epidemiologists typically work for universities or in affiliation with federal agencies such as CDC and NIH. 5 percent are in scientific research and development services and another 5 percent in state colleges, universities, and professional schools (2024). Scientific research and development services also pays the most of any top industry, a $130,390 median in May 2024.

Industry: insurers and drug companies

BLS notes that epidemiologists in private industry may conduct research for health insurance providers or pharmaceutical companies. Different questions, different pressures, and a different definition of what counts as a good result.

Nonprofit and global health

BLS notes that epidemiologists in nonprofit organizations often focus on public health advocacy rather than research, and that infectious disease epidemiologists often travel to remote areas and developing nations to carry out studies. Specializations BLS lists include environmental health, maternal and child health, injury, mental health, emergency preparedness, and veterinary epidemiology.

AI and this career

exposure: moderate

Moderate exposure, and it lands on specific tasks rather than the job as a whole. Based on articles retrieved from PubMed plus CDC's own program documentation, the parts of epidemiology that are already being automated are case-finding by chart review, writing and debugging analysis code, screening large volumes of text, and routine forecasting. The parts that are not being automated are the ones that decide whether a finding is true and whether anyone acts on it: study design, causal judgment, field interviewing, and standing in public behind a call. Worth knowing before anyone claims certainty: the BLS Occupational Outlook Handbook page for this occupation does not mention artificial intelligence at all, and no BLS or professional-association position statement on AI and epidemiologist employment was located for this write-up. The exposure rating here is an inference from task-level evidence, not a projection anyone official has published.

Tasks likely to change

  • Case finding by chart review. Automated surveillance built on electronic health record data already flags healthcare-associated infections with reported sensitivity of 54.2 to 100 percent and specificity of 63.5 to 100 percent, mostly using natural language processing to pull information out of unstructured clinical notes, and the authors expect large language models to sharpen different parts of the surveillance process further. Those ranges were read from the PubMed record: van der Werff et al., Journal of Internal Medicine, 2025, (publisher link opens for people but blocks automated checking).
  • Writing and debugging the analysis code. In a published case study, a public health practitioner used ChatGPT through ordinary conversation to co-build, debug, and validate a transmission model that reproduced an epidemic curve and estimated a basic reproductive number of 4.19 (95 percent CI 4.13 to 4.26). The authors frame this as reducing technical barriers and democratizing access to advanced modeling. Kwok et al., Computational and Structural Biotechnology Journal, 2024, (free full text PMC11402906; the journal changed publishers, so the old DOI link now lands on a different host).
  • Reading at scale. Researchers used a fine-tuned GPT-3.5 model to detect relevant content across close to 41,000 conference abstracts and a Claude model to sort the 1,100 hits into 21 themes and 12 health-outcome categories, with expert review layered on top. That is a literature and text-coding job that used to consume weeks of an analyst's time. Belova et al., PLOS ONE, 2025.
  • Forecasting becoming standing infrastructure rather than an emergency scramble. CDC's Center for Forecasting and Outbreak Analytics exists to produce disease forecasts, models, and simulator tools with state and local public health partners, and describes co-developing tailored tools so agencies can understand outbreak scenarios before they unfold.

Tasks that stay human

  • Deciding whether an association is causal. Study design, confounding, selection bias, and knowing which comparison is fair are the core of the discipline, and nothing in the evidence reviewed here hands that judgment to a model. A model will happily fit a pattern that means nothing.
  • The field half of the work. BLS lists collecting data from observations, interviews, surveys, and samples of blood or other bodily fluids, plus travel into communities to run studies and support education efforts. No model interviews a family, walks a restaurant kitchen, or earns the trust that gets a neighborhood to answer the phone.
  • Owning the call in public. BLS lists communication skills first among important qualities because epidemiologists brief health practitioners, policymakers, and the public. A government epidemiologist carries accountability for a recommendation that no software can absorb.
  • Making the systems actually work. The same review that is optimistic about automated surveillance reports that implementation of these systems in daily practice remains scarce, and lists technical, governance, regulatory, and quality-monitoring requirements that have to be met first (van der Werff et al.,. A scan of 36 institutions in the NIH CTSA network found most only in the experimental phase of generative AI deployment, with notable gaps in workforce training and ethical oversight, and concerns about bias, data security, and trust (Idnay et al., 2024,. Someone has to validate the model, and that someone is an epidemiologist.

What epidemiologist work may look like

Picture a county health department on a Tuesday a few years from now. The morning may open with a queue an algorithm built overnight, ranking sixteen possible clusters by how unusual they look, with two already pushed to the top and fourteen already set aside. The epidemiologist likely reads that queue the way a physician reads an X-ray, hunting for what the machine cannot know: that the school in cluster two shares a bus route with cluster one, that the lab swapped test kits last month, that the neighborhood in question stopped answering county phone calls after a bad experience two years ago. Analysis code that once took a week may take an afternoon, because a model drafts it and the epidemiologist argues with the draft. The time saved probably does not become free time. It more likely becomes more investigations per person, more forecasts requested by more officials, and a new standing duty of proving the model is not quietly wrong about the communities with the thinnest data. Meanwhile the stubbornly human parts may be the ones that decide whether any of it matters: knocking on the door, asking the awkward question, and standing in front of a school board to say what the numbers mean and what should happen next.

Sources:[1][2][3][4][5][6]

Open questions on this career

  • Fixed: the Ohio State U.S. News ranking was credited to the wrong page. The ranking sentence is real, but it appears on Ohio State's Division of Epidemiology page (cph.osu.edu/epidemiology), not on the MPH program page we link for contact information. Both links are now shown.
  • PH WINS 2024 figures (54 percent at their agency five years or less, 71 percent with a burnout symptom, 75 percent intending to stay) describe the entire state and local governmental public health workforce, not epidemiologists specifically. No epidemiologist-only tenure, turnover, or burnout data was located.
  • Kent State's page notes the college is being renamed the College of Public Health and Health Sciences beginning 2026-2027, and catalog.kent.edu returned 404 on every pattern tried, so catalog pages may have moved. On-campus MPH requirements may differ from the online program.

Pay and outlook come from O*NET, the US Department of Labor's occupation site, and every figure links back to it. We do not publish tuition or cost figures here: those change often, so use each school's own page and phone number below. Tell Mr. Mendoza if anything looks wrong.

Where you can train for it

3 programs

Read these as minimums, not targets.Meeting the numbers below is what lets you apply; it is not what gets you in. Selective programs admit far fewer people than apply, and admitted students are usually well above the minimum. Call the program and ask what last year's admitted class actually looked like. That one phone call is worth more than any number on this page.

Kent State University

Kent, OH · Master of Public Health (M.P.H.), epidemiology concentration, STEM-designated

Online MPH in Epidemiology (College of Public Health and Health Sciences)

What they ask for

  • No GRE required. The only admission statement we could find printed on a reachable Kent State page is this one: "In our online MPH programs, no GRE is required. Instead, we rely on a holistic approach to enrollment."
  • Kent State does not publish its other admission requirements on any page we could open, so ask the College of Public Health directly for the current GPA, recommendation letter, essay, and English-proficiency requirements before you plan an application.

The nearest strong Ohio option to Cleveland, southeast of the city. The program page says the degree can be finished in as few as 24 months, and Kent State runs an "Accelerated MPH for Kent State Undergraduates" path that lets students apply up to 9 credit hours toward both a bachelor's degree and the Master of Public Health. 330-672-6500 with publichealth@kent.edu is the College of Public Health contact line printed on kent.edu; 1-844-234-4073 is the toll-free admissions outreach line printed on the online-programs pages. For tuition and fees, ask the university or use Kent State's own cost pages.

Case Western Reserve University

Cleveland, OH · Master of Public Health (MPH), accredited by the Council on Education for Public Health (CEPH)

Master of Public Health (Department of Population and Quantitative Health Sciences, School of Medicine)

What they ask for

  • Apply through SOPHAS. Fall entry: early decision March 1, international June 1 (reviewed on a rolling basis), final MPH and dual-degree deadline August 3. Spring entry: early decision and international October 1, final MPH deadline December 15, dual-degree deadline January 3. Applications after the final date are reviewed on a rolling basis and slots may not be available.
  • Three recommendations sent electronically, at least one of which must come from an academic institution or instructor.
  • TWO separate pieces of writing are required, not one: a one-page personal statement on your motivation for the MPH, and a separate Reflection Essay of 1 to 2 pages on how your background and experiences prepared you for graduate training in public health. Also upload legible unofficial transcripts with the application; official transcripts are required on enrollment.
  • The GRE general exam is not required (optional scores go to institution code 4785). International applicants must submit TOEFL 90 or higher, or IELTS 7.0 or higher, plus a WES evaluation for non-U.S. transcripts.

In-person program, 16 to 21 months depending on workload, with full-time and part-time options, five concentrations, 11 dual-degree options, and a research-intensive pathway. Practicum and capstone placements are arranged by the program. CWRU's own page notes the city's concentration of health systems: Cleveland Clinic, MetroHealth, University Hospitals, and the VA Medical Center. 216.368.2601 is the program phone number printed on the MPH admission page linked above. CWRU does not print a minimum GPA on the admission page. For tuition and fees, use CWRU's own cost pages or call the program.

The Ohio State University

Columbus, OH · Master of Public Health (MPH), epidemiology specialization, minimum 45 credit hours

Master of Public Health in Epidemiology (College of Public Health, Division of Epidemiology)

What they ask for

  • Bachelor's degree, 3.0 GPA recommended, and strong undergraduate science and math preparation (stated as program prerequisites).
  • Autumn semester start only, minimum 45 credit hours.
  • Apply through SOPHAS plus a supplemental Ohio State application.
  • 2025/2026 deadlines: priority deadline November 14, regular deadline May 15. The priority deadline is what governs graduate assistantship consideration.

Farther from Cleveland than Kent or Case, but the deepest epidemiology bench in Ohio: the division also offers MS and PhD tracks in epidemiology plus MPH tracks in veterinary public health and clinical translational science, and Ohio State lists a combined BSPH/MPH path for undergraduates. On its division page (https://cph.osu.edu/epidemiology), Ohio State writes that "the division's graduate programs are ranked among the best in the nation at no. 21 by U.S. News & World Report." 614-292-8350 with cph@osu.edu is the College of Public Health Admissions and Student Services line printed on the program page, at 250 Cunz Hall, 1841 Neil Ave., Columbus, OH 43210. For tuition and fees, use Ohio State's own cost pages.

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