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My mother (and through her, my uncle & aunt in Hong Kong, who are a doctor & nurse) have been nagging me to wear a mask if I go out. This piece makes a compelling argument for us all to wear them: not just to protect us, but to protect others. https://www.washingtonpost.com/opinions/2020/04/02/not-all-heroes-wear-capes-many-wear-masks-you-should-too/
I'm not a medical professional, but I am a crafter, so here's my experience with making masks, if it helps any of you.
1. If you can sew pattern I found to be easiest & best. Fits well, easy to sew. Can be made w/ ties if you don't have elastic. http://blog.japanesecreations.com/how-to-sew-a-simple-fabric-face-mask
1. If you can sew pattern I found to be easiest & best. Fits well, easy to sew. Can be made w/ ties if you don't have elastic. http://blog.japanesecreations.com/how-to-sew-a-simple-fabric-face-mask
2. If you can't sew, there are many no-sew patterns around. Here's one using a scarf and hair ties. (Note that studies seem to recommend a tight cotton weave like a tea towel/quilting cotton if possible, but even a T-shirt will do.) http://blog.japanesecreations.com/no-sew-face-mask-with-handkerchief-and-hair-tie
Is this overkill? Maybe. But I’d rather we all over-react (and waste some fabric and <30 min of time) if it helps stop the spread of the virus.
3. If you can't print a pattern out, or prefer the pleated style of mask, here's another patterns: https://www.nytimes.com/article/how-to-make-face-mask-coronavirus.html
And once more, here's a great piece about why (and how) we should probably all wear homemade masks in public for a bit, and reserve the medical-grade ones for medical professionals. https://www.washingtonpost.com/opinions/2020/04/02/not-all-heroes-wear-capes-many-wear-masks-you-should-too/
A couple more resources: All your mask-related Qs, answered: https://www.vox.com/the-goods/2020/4/1/21203241/coronavirus-diy-face-mask-homemade-tutorials
A really thorough piece by @edyong209 on mask usage. "You’re not wearing them to stop yourself getting infected, but to stop someone else getting infected.” https://www.theatlantic.com/health/archive/2020/04/coronavirus-pandemic-airborne-go-outside-masks/609235/
Want to make masks to donate? A list of places taking donations, by state: https://www.weneedmasks.org/list/
A database of organizations nationwide seeking mask donations. https://www.deaconess.com/How-to-make-a-Face-Mask/Mask-Donations
And, finally, a comment from my mom. When I finished my mask I tried it on and sent her this pic. "Happy now, mom?" I said. Her reply: "Yes, I am happy." Followed shortly by: "You don't need to wear that inside the house, you know." 
