L’hygiène des mains est un élément fondamental de la prévention des infections, mais peu d’études ont examiné si la méthode de séchage des mains affecte le risque de dissémination d’agents pathogènes potentiels. But : Effectuer une étude multicentrique à croisement interne comparant les niveaux de contamination bactérienne dans les toilettes avec le séchage des mains au moyen d’essuie-mains en papier (PT) ou d’un séchoir à jet d’air (JAD ; Dyson).
Background: Hand hygiene is a fundamental component of infection prevention, but few studies have examined whether hand-drying method affects the risk of dissemination of potential pathogens. Aim: To perform a multi-centre, internal-crossover study comparing bacterial contamination levels in washrooms with hand-drying by either paper towels (PT) or jet air dryer (JAD; Dyson). Methods: A total of 120 sampling sessions occurred over 12 weeks in each of three hospitals (UK, France, Italy). Bacteria were cultured from air, multiple surfaces, and dust. Washroom footfall (patients/visitors/staff) was monitored externally. Findings: Footfall was nine times higher in UK washrooms. Bacterial contamination was lower in PT versus JAD washrooms; contamination was similar in France and the UK, but markedly lower in Italian washrooms. Total bacterial recovery was signiﬁcantly greater from JAD versus PT dispenser surfaces at all sites (median: 100e300 vs 0e10 cfu; all P < 0.0001). In the UK and France, signiﬁcantly more bacteria were recovered from JAD washroom ﬂoors (median: 24 vs 191 cfu, P < 0.00001). UK meticillin-susceptible Staphylococcus aureus recovery was three times more frequent and six-fold higher for JAD vs PT surfaces (both P < 0.0001). UK meticillin-resistant S. aureus recovery was three times more frequent (21 vs 7 cfu) from JAD versus PT surfaces or ﬂoors. Signiﬁcantly more enterococci and extended-spectrum b-lactamase (ESBL)-producing bacteria were recovered from UK JAD versus PT washroom ﬂoors (P < 0.0001). In France, ESBL-producing bacteria were recovered from dust twice as often during JAD versus PT use. Conclusion: Multiple examples of signiﬁcant differences in surface bacterial contamination, including by faecal and antibiotic-resistant bacteria, were observed, with higher Lisez l’article