title: Surgical helmets and SARS infection.
abstract: Performance testing of two brands of surgical helmets indicated that their efficiency at in vivo filtration of sub-micrometer-sized particles is inadequate for their use as respirators. These helmets are not marketed for respiratory protection and should not be used alone for protection against severe acute respiratory syndrome when performing aerosol-generating procedures.
authors.affiliation: The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, People's Republic of China. jamesderrick@pobox.com
authors.forename: James L
authors.initials: JL
authors.lastname: Derrick
authors.forename: Charles D
authors.initials: CD
authors.lastname: Gomersall
mesh_terms: D000391:Air Microbiology; D004391:Dust; D006801:Humans; D008397:Masks; D008851:Micropore Filters; D010316:Particle Size; D011446:Prospective Studies; D012134:Respiratory Protective Devices / Q000592:standards; D045473:Severe acute respiratory syndrome-related coronavirus / Q000302:isolation & purification; D045169:Severe Acute Respiratory Syndrome / Q000517:prevention & control*
chemical_list: D004391:Dust