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Effectiveness of Face Masks in Preventing Airborne Transmission of #SARSCoV2 https://msphere.asm.org/content/5/5/e00637-20
@mSphereJ paper shows why *universal* mask-wearing is so effective in mitigating #coronavirus spread. This is true regardless of how contagious #coronavirus variants become /1
@mSphereJ paper shows why *universal* mask-wearing is so effective in mitigating #coronavirus spread. This is true regardless of how contagious #coronavirus variants become /1
Two mannequins +/- different kinds of masks were attached to a nebulizer and a ventilator to simulate speaker and receiver, respectively. Annotated expt schema shown below. Infectious virus & viral RNA were collected and measured in the âreceiverâ as shown . . . /2
/2 gif
A photo of the actual experimental set-up :-) Different kinds of masks (or not) were used (Cotton, surgical, N95, N95 fitted). . . ./3
I regenerated on figure (Fig. 2D) for easy comprehension. Compared to no masks scenario(w/o masks in graph), Cotton and Surgical masks worn by the receiver reduces infectious virus âreceivedâ by ~20-40% whereas N95/N95 fitted masks reduces the same by ~60-80% . . ./4
If the Spreader ALONE wears a cotton mask, it reduces infectious virus received by 55%! When both Spreader and Receiver wear masks, infectious virus received is reduced by up to 90% . . . /5
Notably, even a fitted N95 mask is not perfect (20 min exp time). But I'll take 75-90% reduction in infectious virus received over nothing anyday. Combined with social distancing, strict QT policies & increasing immunity due to vaccination, we can all #StampOutCOVID19. . . /6 FIN
