- Nov 17, 2008
- Reaction score
Here are the results of a study Duke University did on how effective different types of masks are. Many masks performed pretty well, however, this quote explains why many were against the rush to mask up.
We noticed that speaking through some masks (particularly the neck fleece) seemed to disperse the largest droplets into a multitude of smaller droplets (see Supplementary Fig. S5), which explains the apparent increase in droplet count relative to no mask in that case. Considering that smaller particles are airborne longer than large droplets (larger droplets sink faster), the use of such a mask might be counterproductive.