Researchers from the MICALIS joint research unit and the MetaGenoPolis research unit are involved in the European “Human Microbiome Action” project. This is a CSA (Coordination and Support Action) project, coordinated by INRAE, which brings together 16 other European partners. “Human Microbiome Action” was officially launched on 1 May 2021 for a duration of three years and a budget of almost 2 million euros.