#Inexpensive, accessible device provides visual proof that masks block droplets
“#Inexpensive, accessible device provides visual proof that masks block droplets” Credit: Pixabay/CC0 Public Domain Duke physician Eric Westman was one of the first champions of masking as a means to curtail the spread of coronavirus, working with a local non-profit to provide free masks to at-risk and under-served populations in the greater Durham community. But…