This isn’t a pro or anti mask post y’all do what you want but that graph isn’t representative anymore. Certainly was applicable at the time but we know more now. It takes and “almost three month” period over countries it doesn’t identify but lists Asian countries and the study ended before July 6th 2020. In other words this is data from when had the smallest sample, least knowledge of the virus, and they are giving credit to masks in Asia where we now no that isn’t the case.....at least entirely. This data was relevant then and would be a good reason to implement mask mandates. and Since I can’t see all the countries no one can speak to it exactly but given the the vast majority of the world was under a mask mandate right before/after the study and cases and deaths were higher most everywhere last fall the conclusion has to change. The graph would certainly change if for no other reason America (at least 90% of population) was under a mandate when the overwhelming majority of our issues occurred. This would be like posting data from April 2020 about surface contact.....that’s what we thought then....the data has changed.
Our review of the literature offers evidence in favor of widespread mask use as source control to reduce community transmission: Nonmedical masks use materials that obstruct particles of the necessary size; people are most infectious in the initial period postinfection, where it is common to have few or no symptoms (45, 46, 141); nonmedical masks have been effective in reducing transmission of respiratory viruses; and places and time periods where mask usage is required or widespread have shown substantially lower community transmission.
The available evidence suggests that near-universal adoption of nonmedical masks when out in public, in combination with complementary public health measures, could successfully reduce Re
to below 1, thereby reducing community spread if such measures are sustained. Economic analysis suggests that mask wearing mandates could add 1 trillion dollars to the US GDP (32, 34)