Validation and Application of Models to Predict Facemask Influenza Contamination in Healthcare Settings
Identifieur interne : 001252 ( Istex/Curation ); précédent : 001251; suivant : 001253Validation and Application of Models to Predict Facemask Influenza Contamination in Healthcare Settings
Auteurs : Edward M. Fisher [États-Unis] ; John D. Noti [États-Unis] ; William G. Lindsley [États-Unis] ; Francoise M. Blachere [États-Unis] ; Ronald E. Shaffer [États-Unis]Source :
- Risk Analysis [ 0272-4332 ] ; 2014-08.
Abstract
Facemasks are part of the hierarchy of interventions used to reduce the transmission of respiratory pathogens by providing a barrier. Two types of facemasks used by healthcare workers are N95 filtering facepiece respirators (FFRs) and surgical masks (SMs). These can become contaminated with respiratory pathogens during use, thus serving as potential sources for transmission. However, because of the lack of field studies, the hazard associated with pathogen‐exposed facemasks is unknown. A mathematical model was used to calculate the potential influenza contamination of facemasks from aerosol sources in various exposure scenarios. The aerosol model was validated with data from previous laboratory studies using facemasks mounted on headforms in a simulated healthcare room. The model was then used to estimate facemask contamination levels in three scenarios generated with input parameters from the literature. A second model estimated facemask contamination from a cough. It was determined that contamination levels from a single cough (≈19 viruses) were much less than likely levels from aerosols (4,473 viruses on FFRs and 3,476 viruses on SMs). For aerosol contamination, a range of input values from the literature resulted in wide variation in estimated facemask contamination levels (13–202,549 viruses), depending on the values selected. Overall, these models and estimates for facemask contamination levels can be used to inform infection control practice and research related to the development of better facemasks, to characterize airborne contamination levels, and to assist in assessment of risk from reaerosolization and fomite transfer because of handling and reuse of contaminated facemasks.
Url:
DOI: 10.1111/risa.12185
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: Pour aller vers cette notice dans l'étape Curation :001252
Links to Exploration step
ISTEX:B3AA6C50C02BE62A0A0062D2B434E60BC8DA32DDLe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Validation and Application of Models to Predict Facemask Influenza Contamination in Healthcare Settings</title>
<author><name sortKey="Fisher, Edward M" sort="Fisher, Edward M" uniqKey="Fisher E" first="Edward M." last="Fisher">Edward M. Fisher</name>
<affiliation wicri:level="1"><mods:affiliation>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh</wicri:regionArea>
</affiliation>
<affiliation><mods:affiliation>E-mail: EFisher@cdc.gov</mods:affiliation>
<wicri:noCountry code="no comma">E-mail: EFisher@cdc.gov</wicri:noCountry>
</affiliation>
</author>
<author><name sortKey="Noti, John D" sort="Noti, John D" uniqKey="Noti J" first="John D." last="Noti">John D. Noti</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Lindsley, William G" sort="Lindsley, William G" uniqKey="Lindsley W" first="William G." last="Lindsley">William G. Lindsley</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Blachere, Francoise M" sort="Blachere, Francoise M" uniqKey="Blachere F" first="Francoise M." last="Blachere">Francoise M. Blachere</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Shaffer, Ronald E" sort="Shaffer, Ronald E" uniqKey="Shaffer R" first="Ronald E." last="Shaffer">Ronald E. Shaffer</name>
<affiliation wicri:level="1"><mods:affiliation>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh</wicri:regionArea>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:B3AA6C50C02BE62A0A0062D2B434E60BC8DA32DD</idno>
<date when="2014" year="2014">2014</date>
<idno type="doi">10.1111/risa.12185</idno>
<idno type="url">https://api.istex.fr/ark:/67375/WNG-GSCW0RR1-B/fulltext.pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001252</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001252</idno>
<idno type="wicri:Area/Istex/Curation">001252</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a" type="main">Validation and Application of Models to Predict Facemask Influenza Contamination in Healthcare Settings</title>
<author><name sortKey="Fisher, Edward M" sort="Fisher, Edward M" uniqKey="Fisher E" first="Edward M." last="Fisher">Edward M. Fisher</name>
<affiliation wicri:level="1"><mods:affiliation>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh</wicri:regionArea>
</affiliation>
<affiliation><mods:affiliation>E-mail: EFisher@cdc.gov</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Noti, John D" sort="Noti, John D" uniqKey="Noti J" first="John D." last="Noti">John D. Noti</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Lindsley, William G" sort="Lindsley, William G" uniqKey="Lindsley W" first="William G." last="Lindsley">William G. Lindsley</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Blachere, Francoise M" sort="Blachere, Francoise M" uniqKey="Blachere F" first="Francoise M." last="Blachere">Francoise M. Blachere</name>
<affiliation wicri:level="1"><mods:affiliation>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Health Effects Laboratory Division, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, WV, Morgantown</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Shaffer, Ronald E" sort="Shaffer, Ronald E" uniqKey="Shaffer R" first="Ronald E." last="Shaffer">Ronald E. Shaffer</name>
<affiliation wicri:level="1"><mods:affiliation>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh, USA</mods:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>National Personal Protective Technology Laboratory, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, PA, Pittsburgh</wicri:regionArea>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j" type="main">Risk Analysis</title>
<title level="j" type="alt">RISK ANALYSIS</title>
<idno type="ISSN">0272-4332</idno>
<idno type="eISSN">1539-6924</idno>
<imprint><biblScope unit="vol">34</biblScope>
<biblScope unit="issue">8</biblScope>
<biblScope unit="page" from="1423">1423</biblScope>
<biblScope unit="page" to="1434">1434</biblScope>
<biblScope unit="page-count">12</biblScope>
<date type="published" when="2014-08">2014-08</date>
</imprint>
<idno type="ISSN">0272-4332</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0272-4332</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract">Facemasks are part of the hierarchy of interventions used to reduce the transmission of respiratory pathogens by providing a barrier. Two types of facemasks used by healthcare workers are N95 filtering facepiece respirators (FFRs) and surgical masks (SMs). These can become contaminated with respiratory pathogens during use, thus serving as potential sources for transmission. However, because of the lack of field studies, the hazard associated with pathogen‐exposed facemasks is unknown. A mathematical model was used to calculate the potential influenza contamination of facemasks from aerosol sources in various exposure scenarios. The aerosol model was validated with data from previous laboratory studies using facemasks mounted on headforms in a simulated healthcare room. The model was then used to estimate facemask contamination levels in three scenarios generated with input parameters from the literature. A second model estimated facemask contamination from a cough. It was determined that contamination levels from a single cough (≈19 viruses) were much less than likely levels from aerosols (4,473 viruses on FFRs and 3,476 viruses on SMs). For aerosol contamination, a range of input values from the literature resulted in wide variation in estimated facemask contamination levels (13–202,549 viruses), depending on the values selected. Overall, these models and estimates for facemask contamination levels can be used to inform infection control practice and research related to the development of better facemasks, to characterize airborne contamination levels, and to assist in assessment of risk from reaerosolization and fomite transfer because of handling and reuse of contaminated facemasks.</div>
</front>
</TEI>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Sante/explor/SrasV1/Data/Istex/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001252 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Curation/biblio.hfd -nk 001252 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Sante |area= SrasV1 |flux= Istex |étape= Curation |type= RBID |clé= ISTEX:B3AA6C50C02BE62A0A0062D2B434E60BC8DA32DD |texte= Validation and Application of Models to Predict Facemask Influenza Contamination in Healthcare Settings }}
![]() | This area was generated with Dilib version V0.6.33. | ![]() |