Cloth Masks
2020-03-22 17:21:11.943221+01 by
Dan Lyke
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A cluster randomised trial of cloth masks compared with medical masks in healthcare workers
Results The rates of all infection outcomes were highest in the cloth mask arm, with the rate of ILI statistically significantly higher in the cloth mask arm (relative risk (RR)=13.00, 95% CI 1.69 to 100.07) compared with the medical mask arm. Cloth masks also had significantly higher rates of ILI compared with the control arm. An analysis by mask use showed ILI (RR=6.64, 95% CI 1.45 to 28.65) and laboratory-confirmed virus (RR=1.72, 95% CI 1.01 to 2.94) were significantly higher in the cloth masks group compared with the medical masks group. Penetration of cloth masks by particles was almost 97% and medical masks 44%.
http://dx.doi.org/10.1136/bmjopen-2014-006577
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
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