title: Letter: Aseptic aerosols from cold vapour humidifiers.
mesh_terms: D000336:Aerosols; D000389:Air Conditioning; D000391:Air Microbiology; D003428:Cross Infection / Q000517:prevention & control*; D004865:Equipment and Supplies, Hospital / Q000592:standards; D006801:Humans; D006813:Humidity; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D013242:Sterilization; D014871:Water Microbiology
chemical_list: D000336:Aerosols