As a board certified pediatrician but retired since 2007, due to chronic lung disease (i.e. fibrosis mediastinitis with total left pulmonary vein obstruction resulting in pulmonary hypertension, hypoxia, and hemoptysis), I have always had a small handful supply of N95 masks on hand to protect me.
You may not be aware of all of the circumstances behind someone wearing a mask in public, and I'd hope that you would not rush to be so judgmental of me when I had to wear one to drop off my broken MacBook at a repair center recently (called ahead to do a no-contact drop but you never know when someone else will screw that up). I've been holed up in my house for several weeks, terrified to catch this. If I get sick and medical services are overwhelmed, I have to hope my cpap at 14cm and 5L of O2 piped in from my concentrator will keep me from needing hospitalization, but with one functional lung and 90% sats on a good day I'm one of those most at risk. I've been on a ventilator in the ICU a few times, and is NOT fun, especially when your ET tube gets plugged and you pass out while they try to clear the blockage.
I made my wife wear one of my masks on an airplane when she traveled without me 4 weeks ago, so she would not bring something home to me. She wiped down her seat and everything nearby with Clorox. She recently quit seeing private pediatric occupational therapy patients at their home, and is doing telemedicine on the half of her patients that are willing to do so. As director of clinical services for a not for profit pediatric PT/OT and Speech therapy company, she has been instrumental in setting up telecommuting to work from home, and implementing their telemedicine program and getting approval for her people to be paid, so that she can keep her 200 employees working instead of looking for food stamps.
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