Early detection of nosocomial infections and effective disinfection of hospitals and healthcare centres are key to reducing these figures, but the methods currently used have their limitations. Hence the creation of the NOSOSENS Project, which is working on a new bio-based disinfectant designed to eliminate the main pathogens on a new, flexible and portable biosensor platform. It uses printed electrochemical sensors for rapid, selective detection of Staphylococcus aureus, which is resistant to methicillin and responsible for 11% of nosocomial infections.