Carpeting in hospitals.
D000391:Air Microbiology; D001419:Bacteria / Q000302:isolation & purification; D001431:Bacteriological Techniques; D003428:Cross Infection / Q000453:epidemiology / Q000209:etiology*; D006749:Hospital Design and Construction; D006797:Housekeeping, Hospital / Q000592:standards; D006801:Humans; D008722:Methods; D008829:Microbiology