Welcome to the home of International Microorganism Day (IMD), a global celebration of the tiny but mighty organisms that shape our world.
Whether you are a scientist, student, educator, communicator, or simply curious about the microbial world, you are part of this movement.
Event proposals for IMD 2026 are now open!
Join us in celebrating microbes and helping others discover their vital role in shaping our planet, our health, and our daily lives by hosting your own event on 17 September 2026.
OUr mission
Whether we know it or not, microbes are an essential part of everyday life. From health, to food, to the environment, microbes have a role and we highlight and celebrate that on International Microorganism Day on 17 September each year. Our mission is to teach and provide a platform for microbe lovers around their world to share their passion and knowledge.
Our Story
Federation of European Microbiological Societies (FEMS) is the organisation behind IMD and helps guide and support its direction. IMD started back in 2017 with the Portuguese Society of Microbiology, and then moved under FEMS’ leadership in 2020. Since then, it’s grown into a lively international movement that highlights the important and fascinating role microbes play in our everyday lives, something FEMS is passionate about promoting across the microbiology community.
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