For discussion of the primary matter of this thread, but the stubborn dissagreements can remain there.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
To be honest most doctors don't actually say the public wearing of surgical masks is anything to do with preventing the wearer from catching covid.
That's a bit inconsistent. Masks are not Maxwellian demonsThe PPE gear they wear on the wards to prevent the staff catching it is a completely different kettle of fish.
That's never been demonstrated to be significant risk for COVIDApart from a small help stopping them doing direct hand to mouth contamination off public unclean surfaces
CDC Science Brief: COVID-19 Vaccines and Vaccination Updated May 27 said:A growing body of evidence indicates that people fully vaccinated with an mRNA vaccine (Pfizer-BioNTech and Moderna) are less likely to have asymptomatic infection or to transmit SARS-CoV-2 to others. Studies are underway to learn more about the benefits of Johnson & Johnson/Janssen vaccine. However, the risk for SARS-CoV-2 infection in fully vaccinated people cannot be completely eliminated as long as there is continued community transmission of the virus. Link
This has been my go to reference anytime I needed to know how to control dusts and vapors for an industrial process.[URL unfurl="true" said:https://portal.acgih.org/s/store#/store/browse/detail/a154W00000BOavHQAT[/URL]]Industrial Ventilation: A Manual of Recommended Practice for Design