This paper was just released: https://www.poverty-action.org/sites/default/files/publications/Mask_RCT____Symptomatic_Seropositivity_083121.pdf which states, "...we find an imprecise zero,..." for the effectiveness of cloth masks. All the media coverage is crowing that it shows masks work (because it showed an 11% reduction in symptomatic seroprevalence for surgical masks) despite it showing the opposite for the type of mask that 90% of people are wearing. If they do mention the results for cloth masks, which NBC as example didn't, it is 100% below the fold and always accompanied by a hedging statement like "better than nothing" despite the paper indicating it is actually no different than nothing.