They did test the petri dishes.
“All swabs from the outer mask surfaces of the masks were positive for SARS–CoV-2, whereas most swabs from the inner mask surfaces were negative “
This is very strange. I’m having a hard time believing the results of this test. It also contradicts another statement in the report...
“Mask surfaces were swabbed with aseptic Dacron swabs in the following sequence: outer surface of surgical mask, inner surface of surgical mask, outer surface of cotton mask, and inner surface of cotton mask. The researchers found SARS COV-2 on ALL surfaces. “
One says the INSIDE of the masks were negative, the other statement says that they found the virus on ALL surfaces.
Color me extremely skeptical.