@ABSORBER posted:You mean all the literature he scanned written in the span of the last two or three months? Like this one:
"The detection of SARS-CoV-2 RNA in presymptomatic or asymptomatic persons does not prove that they can transmit the virus to others. We describe evidence that supports the concept of transmission while presymptomatic and asymptomatic, which we found during a rapid literature review conducted at the Centers for Disease Control and Prevention (CDC) in early April 2020."
https://wwwnc.cdc.gov/eid/arti...26/7/20-1595_article
That's some good science for you! That's how I became an expert: rapid literature review. ;-)
It seems everything we know about mask-wearing has been discovered this year. We have sent advanced, scientific vehicles to Mars for multi-year missions and yet didn't know masks protect against the transmission of viruses until April 2020.
Haven’t people in Asia worn masks for years to prevent flu spread? Maybe we should check out their studies.