Northern Arizona University

What you'll study

The programme combines advanced public‑health theory and methods with specialised training in veterinary epidemiology, zoonotic disease ecology and One Health approaches. Core doctoral coursework typically covers advanced epidemiologic methods, biostatistics, infectious disease dynamics, spatial and temporal modelling, pathogen surveillance, risk assessment and quantitative ecology.

• Advanced Epidemiologic Methods: study design for complex longitudinal and case‑control studies, causal inference and bias assessment.
• Biostatistics and Data Science: generalized linear mixed models, survival analysis, Bayesian methods, machine learning for surveillance data and reproducible research practices.
• Infectious Disease Ecology and Zoonoses: host–pathogen dynamics, wildlife disease ecology, cross‑species transmission and drivers of emergence.
• Surveillance and Outbreak Investigation: diagnostics, field epidemiology, syndromic surveillance, laboratory–field integration and response strategies.
• Spatial Epidemiology and GIS: spatial analysis of disease risk, remote sensing, landscape epidemiology and cluster detection.
• One Health Policy and Risk Communication: interdisciplinary policy frameworks, stakeholder engagement, ethics and risk communication for diverse communities.
• Doctoral Research and Dissertation: independent research under faculty supervision leading to a substantial original dissertation that advances veterinary public‑health knowledge.

Students also undertake seminars in grant writing, research ethics and teaching practicum. The programme balances formal coursework, laboratory and field methods training, and an intensive research apprenticeship culminating in candidacy examinations and dissertation defence.

Entry requirements

Applicants are expected to hold a relevant master's degree or equivalent in public health, veterinary medicine, epidemiology, biology or a closely related discipline. Typical requirements include:

• A completed graduate degree (master's or professional doctorate) with a record of strong academic performance.
• Demonstrated research experience in epidemiology, veterinary/public health, infectious disease or ecological fieldwork; strong applicants may include promising candidates with substantial professional experience.
• A current CV, a statement of purpose describing research interests and fit with faculty expertise, and at least two academic or professional references.
• Evidence of quantitative training or competence (for example coursework in statistics, epidemiology or related methods). If quantitative background is limited, applicants may be expected to complete remedial coursework.
• Proof of English language proficiency where required by the university for international applicants.

Standardised test requirements (such as the GRE) may vary; prospective students should consult the programme admissions office for current guidance. Admission decisions also consider alignment with faculty research interests and availability of supervisors and funding for the proposed research.

Career prospects

Graduates are prepared for leadership roles in academia, government and the private sector where high‑level skills in veterinary epidemiology and public health are needed. Common career paths include:

• Academic and research positions (faculty, postdoctoral researcher) focusing on infectious disease ecology, zoonoses and One Health research.
• Public health agencies and disease surveillance units at local, state/provincial and national levels, including roles in outbreak investigation and programme evaluation.
• Veterinary public‑health roles in governmental and intergovernmental organisations, including food safety and animal health services.
• Non‑governmental organisations and international health organisations working on emerging infectious diseases, conservation medicine and community health.
• Industry and consultancy roles in pharmaceutical and biotechnology companies, diagnostic laboratories, and environmental or agricultural consultancies.

The programme emphasises transferable skills such as advanced quantitative analysis, grant writing, science communication and interdisciplinary teamwork, which support careers in applied research, policy development and programme leadership.

Why study at Northern Arizona University

Northern Arizona University offers an environment suited to One Health and veterinary epidemiology research through interdisciplinary collaboration across biological sciences, public health and environmental disciplines. The university's location provides access to diverse ecosystems and wildlife populations for field studies, and opportunities to work with state and regional public‑health partners, animal health services and community stakeholders.

Students benefit from small cohort sizes and close mentorship from faculty with expertise in epidemiology, ecology and quantitative methods, as well as access to laboratory, GIS and statistical resources. The programme fosters applied research experience, encouraging partnerships with public‑sector agencies, tribal health organisations and external research networks to translate findings into policy and practice.

Overall, the PhD at Northern Arizona University is tailored for candidates who want rigorous methodological training combined with practical field and stakeholder engagement experience to address pressing animal–human–environment health challenges.