title: The reply.
authors.affiliation: Center for Infectious Diseases & Prevention, Lahey Clinic Medical Center, Burlington, Mass; Department of Critical Care & Anaesthesia, Lahey Clinic Medical Center, Burlington, Mass.
authors.forename: Donald E
authors.initials: DE
authors.lastname: Craven
authors.affiliation: Center for Infectious Diseases & Prevention, Lahey Clinic Medical Center, Burlington, Mass; Tufts University School of Medicine, Boston, Mass.
authors.forename: Yuxiu
authors.initials: Y
authors.lastname: Lei
authors.affiliation: Department of Critical Care & Anaesthesia, Lahey Clinic Medical Center, Burlington, Mass; Department of Pulmonary Medicine, Lahey Clinic Medical Center, Burlington, Mass.
authors.forename: Jana
authors.initials: J
authors.lastname: Hudcova
mesh_terms: D001991:Bronchitis / Q000453:epidemiology*; D003428:Cross Infection / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal / Q000009:adverse effects*; D008297:Male; D053717:Pneumonia, Ventilator-Associated / Q000453:epidemiology*; D014136:Tracheitis / Q000453:epidemiology*