About: Transmission of communicable respiratory infections and facemasks

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About: Transmission of communicable respiratory infections and facemasks Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Transmission of communicable respiratory infections and facemasks
Creator	Li, Yi Yi, Li Wong, Thomas Guo, Yue Chung, Joanne Leung, Polly Ching, Kwok Danny, Mayur Gohel, Indulal Mei, Hang Yee, Wai
Source	Medline; PMC
abstract	BACKGROUND: Respiratory protection efficiency of facemasks is critically important in the battle against communicable respiratory infections such as influenza and severe acute respiratory syndrome (SARS). We studied the spatial distributions of simulated virus-laden respiratory droplets when human subjects wore facemasks and were exposed to regulatory viral droplets by conducting in vivo experiments in facemask use. METHODS: Transmission pathway of aerosols of Fluorescein-KCl solution through facemasks and protective efficiency of facemasks were examined by using normal surgical facemasks and two facemasks with exhaust valves (Facemask A) and exhaust holes (Facemask B) covered with the same surgical filters situated at the back of the facemasks. Fluorescein-KCl solution was sprayed onto the faces of participants wearing the facemasks and performing intermittent exercises on a treadmill in a climatic chamber. RESULTS: Experimental results showed that when droplets spread onto a person face-to-face over short distances, 92.3% to 99.5% of droplets were blocked by the front surface of the facemask, whereas only 0.5% to 7.7% of droplets reached the back of the facemask. Both facemasks A and B had near or over 99% protection efficiency, compared with that of 95.5% to 97% of surgical facemasks. Using the same filters as normal surgical masks, facemasks A and B provided more effective respiratory protection against communicable respiratory infections such as influenza and SARS by the location of the breathing pathway to the back of the facemasks. CONCLUSIONS: Separating the breathing pathway from the virus-contaminated area in facemasks can provide more effective protection against communicable respiratory infections such as influenza and SARS.
has issue date	2008-05-01(xsd:dateTime)
bibo:pmid	21197329
has license	no-cc
sha1sum (hex)	b19a21295cdc5bb0be8ddc6688268147a0a6d510
resource representing a document's title	Transmission of communicable respiratory infections and facemasks
has PubMed Central identifier	PMC3004550
has PubMed identifier	21197329
schema:publication	J Multidiscip Healthc
resource representing a document's body	covid:b19a21295cdc5bb0be8ddc6688268147a0a6d510#body_text
is schema:about of	named entity 'Experimental' named entity 'subjects' named entity 'experiments' named entity 'exhaust' named entity 'respiratory infections' named entity 'LOCATION' named entity 'NEAR' named entity 'PERFORMING' named entity 'SIMULATED' named entity 'AREA' covid:arg/b19a21295cdc5bb0be8ddc6688268147a0a6d510 named entity 'SPRAYED' named entity 'EXPERIMENTAL RESULTS' named entity 'BACKGROUND' named entity '99.5' named entity 'RESPIRATORY PROTECTION' named entity 'COMPARED' named entity 'SHORT' named entity 'EFFECTIVE' named entity 'SPATIAL' named entity 'IN VIVO' named entity '7.7' named entity 'PROTECTION' named entity 'NORMAL' named entity 'PARTICIPANTS' named entity 'TRANSMISSION' named entity 'PERSON' named entity 'TRANSMISSION' named entity 'SARS' named entity 'RESPIRATORY INFECTIONS' named entity 'SPREAD' named entity 'COVERED' named entity 'TREADMILL' named entity 'HOLES' named entity 'VALVES' named entity 'FACES' named entity 'FLUORESCEIN' named entity 'SURFACE' named entity 'RESULTS' named entity 'PROVIDE' named entity 'HUMAN SUBJECTS' named entity 'RESPIRATORY INFECTIONS' named entity 'AEROSOLS' named entity 'CONTAMINATED' named entity 'DISTANCES' named entity 'BLOCKED' named entity 'KCL SOLUTION' named entity 'CONDUCTING' named entity 'INTERMITTENT' named entity 'REGULATORY' named entity 'BREATHING' named entity 'IMPORTANT' named entity 'SEVERE ACUTE RESPIRATORY SYNDROME' named entity '0.5' named entity 'DISTRIBUTIONS' named entity 'CONCLUSIONS' named entity 'SURGICAL MASKS' named entity 'EXERCISES' named entity 'SURGICAL' named entity 'BATTLE' named entity 'PROVIDED' named entity 'USE' named entity 'EXHAUST' named entity 'FACE-TO-FACE' named entity 'USING' named entity 'RESPIRATORY' named entity 'EXPERIMENTS' named entity 'METHODS' named entity 'EXPOSED TO' named entity 'EXAMINED' named entity 'SEPARATING' named entity 'VIRUS' named entity 'PATHWAY'

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