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
Since its launch in 2017 by the Portuguese Society of Microbiology, and its transition to the leadership of the Federation of European Microbiological Societies (FEMS) in 2020, IMD has continued to grow into a vibrant, international movement dedicated to showcasing the extraordinary impact of microbes on our everyday lives.
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