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[The hospital epidemiology and hygiene unit].

The hospital Epidemiology and Infection Control Unit aims at preventing nosocomial infections and controlling epidemics. In this field, several researches have contributed to improve the knowledge of infections secondary to biliary endoscopy, of epidemics of nosocomial Legionella and multiresistant gram negative and Staphylococcus aureus infections. Studies about the rational use of antibiotics have contributed to a better control of the transmission of multiresistant pathogens.