I appreciate your googling. But this information was
Posted on: April 30, 2020 at 13:36:30 CT
CulturedDan
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available when the CDC said that masks weren't effective.
"mask use might reduce transmission during a severe influenza pandemic."
"Our results indicate that surgical face masks could prevent transmission of human coronaviruses and influenza viruses from symptomatic individuals."
Lot's of mights and coulds there. Not evidence.