title: A double-edged sword and a golden opportunity for healthcare epidemiology.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Weinstein
authors.forename: David K
authors.initials: DK
authors.lastname: Henderson
mesh_terms: D003428:Cross Infection / Q000453:epidemiology* / Q000517:prevention & control; D003695:Delivery of Health Care; D006801:Humans; D011159:Population Surveillance / Q000379:methods*