1. https://www.researchgate.net/publication/340603522_Face_Masks_Against_COVID-19_An_Evidence_Review https://www.researchgate.net/publication/340603522_Face_Mas

1. https://www.researchgate.net/publication/340603522_Face_Masks_Against_COVID-19_An_Evidence_Review https://www.researchgate.net/publication/340603522_Face_Mask... 2. factually, several countries used masks as primary means of reducing transmission, including Czechs, Slovaks, Austrians, e.t.c. ... the sense of protection comes from seeing everybody else have mask * clothmasks are enough, no need to stress about single-use disposable surgical masks