[HN Gopher] CDC now says valved N95 has better source control th...
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       CDC now says valved N95 has better source control than
       cloth/surgical masks [pdf]
        
       Author : simpleguitar
       Score  : 5 points
       Date   : 2021-01-15 22:12 UTC (49 minutes ago)
        
 (HTM) web link (www.cdc.gov)
 (TXT) w3m dump (www.cdc.gov)
        
       | simpleguitar wrote:
       | From the study: "FFRs with an exhalation valve provide
       | respiratory protection to the wearer and--according to the
       | findings from this study--can also reduce particle emissions to
       | levels similar to or better than those provided by surgical masks
       | and unregulated barrier face coverings. This study shows that
       | modifications to these respirators can further reduce particle
       | emissions. The use of an ECG pad or surgical tape secured over
       | the valve from the inside of the FFR can provide source control
       | similar to that of an FFR with no exhalation valve."
       | 
       | And valved N95s are now around $2-3 each from established (not
       | pandemic profiteering) online sources.
        
         | sbinthree wrote:
         | Science: "wearing a thing in front of the air makes the air
         | move slower and spread less, different things work to the
         | extent the thing reduces the flow of air."
        
       | oalae5niMiel7qu wrote:
       | Does this mean we'll be allowed to wear valved N95 masks on
       | flights?
        
       | postalrat wrote:
       | Cloth masks suck. Most people I see when surgical masks don't
       | realize you should adjust it for your nose and have huge gaps all
       | over.
        
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       (page generated 2021-01-15 23:02 UTC)