Sonovia’s reusable anti-viral masks are coated in zinc oxide nanoparticles ... claimed that the mask had been tested by the ATCC laboratory. The lab which tested the mask is called ATCCR.

One criticism is that some of the most convincing evidence for masks from laboratory and real-world studies was left out of the review. The best reasons to believe that masks “make a difference ...

Scientists studying the SARS-CoV-2 coronavirus -- which causes COVID-19-- believe they've discovered why face masks might help limit ... In a series of lab experiments, the investigators found ...

We’ve looked at more than 100 cloth and disposable masks for kids, pored over scientific studies, talked with health experts and researchers, assessed filtration efficiency in independent lab ...