title: The epidemiology of contact transmission: beyond Semmelweis.
authors.forename: E S
authors.initials: ES
authors.lastname: Wong
mesh_terms: D003428:Cross Infection / Q000382:microbiology / Q000517:prevention & control / Q000635:transmission*; D006225:Hand / Q000382:microbiology; D006801:Humans; D017053:Infection Control / Q000379:methods / Q000639:trends; D017757:Infectious Disease Transmission, Professional-to-Patient; D009262:Nails / Q000382:microbiology; D010564:Personnel, Hospital