Covid-19: Why we should all wear masks, there is new scientific rationale-
[medium.com]
The official recommendation in the United States (and other Western countries) that the public should not wear face masks was motivated by the need to save respirator masks for health care workers. There is no scientific support for the statement that masks worn by non-professionals are “not effective”. In contrary, in view of the stated goal to “flatten the curve”, any additional, however partial reduction of transmission would be welcome — even that afforded by the simple surgical masks or home-made (DIY) masks (which would not exacerbate the supply problem). The latest biological findings on SARS-Cov-2 viral entry into human tissue and sneeze/cough-droplet ballistics suggest that the major transmission mechanism is not via the fine aerosols but large droplets, and thus, warrant the wearing of surgical masks by everyone.
Actually at least one recommendation that masks for the general public were a waste of resources needed by health professionals, was by a doctor in New York who has treated nothing but COVID-19 patients since the first cases there. Dr David Price should know. Check out his video. And here is his summary:
Summary: Even though its everywhere, it is easy to avoid getting infected, and most people will be fine if they do
Covid_19_Protecting_Your_Family_Dr_Dave_Price_3_22_2020 on Vimeo