Nothing new here Sam my parents thought me to wash my hands before eating as well as after eating, I guess with Social Media and all those other wonderful improvements personal hygiene went to the way side... on a side note loved the history lesson...Endre

Interesting overview of the history of the surgical mask. I look forward to the next segment.

I did not know this history, but now I know a lot more about masks than I did earlier this morning.  Thank you!

Thanks for sharing the interesting history of the surgical mask Sam Shueh 

This is a really cool idea and a way to honor the people helping out and helping to save lives. Thanks for posting!

Again, thank you Sam for sharing the history and development of N95 masks.

We have so much to learn about pandemics, and it should be talked about more.