Details:

Alternative Title:
Am J Infect Control
Personal Author:
Heimbuch, Brian K. ; Kinney, Kimberly ; Lumley, April E. ; Harnish, Delbert A. ; Bergman, Michael ; ... More +
Heimbuch, Brian K. ; Kinney, Kimberly ; Lumley, April E. ; Harnish, Delbert A. ; Bergman, Michael ; Wander, Joseph D. ; Less -
Description:
Background Decontamination, cleaning, and reuse of filtering facepiece respirators (FFRs) has been proposed to mitigate an acute FFR shortage during a public health emergency. Our study evaluates the ability of commercially available wipe products to clean FFRs contaminated with either infectious or noninfectious aerosols. Methods Three models of surgical N95 FFRs were contaminated with aerosols of mucin or viable Staphylococcus aureus then cleaned with hypochlorite, benzalkonium chloride, or nonantimicrobial wipes. After cleaning, FFRs were separated into components (nose pad, fabrics, and perforated strip), and contaminants were extracted and quantified. Filtration performance was assessed for cleaned FFRs. Results Mucin removal was <1 log for all wipe products on all components. Inert wipes achieved ~1-log attenuation in viable S aureus on fabrics from all FFR models—removal was less effective from nose pads and perforated edges. Both antimicrobial wipes achieved 3–5-log attenuation on most components, with smaller reductions on nose pads and greater reductions on perforated strips. Particle penetration following cleaning yielded mean values <5%. The highest penetrations were observed in FFRs cleaned with benzalkonium chloride wipes. Conclusions FFRs can be disinfected using antimicrobial wipe products, but not effectively cleaned with the wipes evaluated in this study. This study provides informative data for the development of better FFRs and applicable cleaning products.
Subject:
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Aerosol
Article
Benzalkonium Compounds
Bioaerosol
Decontamination
Disinfectants
Disinfection
Humans
Hypochlorous Acid
Influenza
Mucins
Pandemic
Saliva
Staphylococcus Aureus
Ventilators, Mechanical

Source:
Am J Infect Control. 2014; 42(3):265-270
Pubmed ID:
24462175
Pubmed Central ID:
PMC4469386
Document Type:
Journal Article ;
Funding:
CC999999/Intramural CDC HHS/United States ;
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:9267d118038aec3372be604516c37f9b030c9372a95f059bfc4a98322bb68b2b
File Type:

Supporting Files

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