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Properly fitted n95 and higher rated filtration devices could help prevent casual spread. Cloth mask efficacy doesn’t even come close. Any medical protection they provide against aerosolized virus particles is negligible. Just as the article in the OP states, their efficacy is the political statement they convey. There is very little that can be done in a practical way to stop viral spread, aside from physical isolation which is by definition impractical. Modalities that ensure air circulation to decrease viral load in the ambient environment would have more efficacy against spread. Regardless , concentrating energies on therapeutics and care for the medical consequences of infection should be the only political concern. Virtue signally won’t get you any closer to the futile goal of stopping the spread . It would be instructive to see how many cases of hospitalizations to treat pneumonia are currently from bacterial infections.Though given the level of trust I currently have in ‘official’ reports coming from our ‘institutions’, my confirmation bias will probably win out, lol. I wear a cloth mask where it is required for entry or participation, but not because I think that action has much medical significance, just because it is required.