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Updated: Aug 25, 2026

Effects of Surgical Masks on Cardiopulmonary Function in Healthy Subjects
Published on: February 12, 2021
Surgical helmets and SARS infection
James L Derrick1, Charles D Gomersall
1The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region, People's Republic of China. jamesderrick@pobox.com
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.
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