Epidemiologists study patterns and causes of disease within populations. Work includes analysing surveillance data, investigating disease outbreaks, designing and analysing health studies, modelling disease transmission, and communicating findings to inform public health policy and intervention programs. Public health emergencies particularly rely on this specialist analytical capability.

A postgraduate qualification such as a Master of Public Health or Master of Epidemiology is typically required, often building on an undergraduate degree in health, science or medicine. Strong statistical skills and experience with epidemiological software are essential across the field.

State and federal health departments employ the majority of epidemiologists for surveillance and outbreak response, alongside universities and research institutes conducting population health studies. Pharmaceutical companies and consultancies also employ epidemiologists for clinical trial and health economics work.

Strong statistical and data analysis skills are essential, alongside software such as R, SAS or Stata. Clear communication matters greatly too, since epidemiologists must explain complex findings to policymakers, media and the public during outbreaks and health emergencies.

Epidemiologists progress to senior epidemiologist and team leader roles within health departments, then director-level public health leadership positions. Academic pathways lead toward research fellowships and professorships, while some move into global health roles with international organisations. Strong technical publication records support progression into senior academic roles.