The IEA engages in several key activities: - Conferences and Meetings: The IEA organizes the World Congress of Epidemiology every three years, bringing together experts to discuss the latest research and advancements. - Publications: The association publishes the International Journal of Epidemiology, a leading peer-reviewed journal featuring original research and reviews. - Regional Chapters: The IEA has regional chapters that tailor activities and initiatives to the specific needs of their regions, such as the European Epidemiological Federation and the Asia Pacific Epidemiological Association.