Upshot: everybody at risk should have a pulse oximeter at home to detect hypoxia early. I imagine these two are in short supply now? It's a cheap OTC device. I haven't tried to buy one.https://www.nytimes.com/2020/04/20/opinion/coronavirus-testing-pneumonia.html …
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i have a friend who has other respiratory problems and she told me to buy two of them because she can't get reliable readings
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