Effects of distancing and pattern of breathing on the filtering capability of commercial and custom-made facial masks: An in-vitro study.
Lorenzo BallStefano AlbertiClaudio BelfortiniChiara AlmondoChiara RobbaDenise BattagliniCarlo CraveroPaolo PelosiValentina CarattoMaurizio FerrettiPublished in: PloS one (2021)
Distance, type of device and breathing pattern resulted in highly variable inhaled fraction. While the use of all types of masks resulted relevantly less inhalation compared to distancing alone, only high-grade certified devices (FFP3 and the combination of FFP2 + surgical mask) ensured negligible inhaled fraction in all conditions.