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Removal of Mycobacterium Species by Breathing Circuit Filters

Published online by Cambridge University Press:  02 January 2015

Hazel Aranha-Creado ,
Daniel Prince ,
Kathryn Greene  and
Harvey Brandwein
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Abstract

Breathing circuit filters (BCFs) are used in respiratory and critical-care settings for humidification of air and to limit transmission of respiratory pathogens. Three types of BCFs (Pall BB 25A, BB 100, and HME 15-22) were evaluated (in triplicate) for removal of Mycobacterium species. Filters were challenged with aerosolized Mycobacterium bovis (a surrogate for Mycobacterium tuberculosis), at minimum total concentrations of 104 colony-forming units. No M bovis was recovered in the effluent, providing removal efficiencies of >99.99% to >99.999% for the filters tested.

Type
Concise Communications
Information
Infection Control & Hospital Epidemiology , Volume 18 , Issue 4 , April 1997 , pp. 252 - 254
Copyright
Copyright © The Society for Healthcare Epidemiology of America 1997

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