The real bacterial filtration efficiency to evaluate the effective protection of facemasks used for the prevention of respiratory diseases.

ABSTRACT: The real protection offered by facemasks to control the transmission of respiratory viruses is still undetermined. Most of the manufacturing regulations, as well as scientific studies, have focused on studying the filtration capacity of the fabrics from which they are made, ignoring the air that escapes through the facial misalignments, and which depends on the respiratory frequencies and volumes. The objective of this work was to define a Real Bacterial Filtration Efficiency for each type of facemask, considering the bacterial filtration efficiency of the manufacturers and the air that passes through them. Nine different facemasks were tested on a mannequin with three gas analyzers (measuring inlet, outlet, and leak volumes) inside a polymethylmethacrylate box. In addition, the differenti

SUBMITTER: Benito PJ 

PROVIDER: S-EPMC10241918 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature