People are buying pulse oximeters to try and detect coronavirus. Do you need one?

Many patients with severe cases of Covid-19 have been shown to have extremely low levels of oxygen in the blood. Others who have tested positive find themselves experiencing shortness of breath.

from CNN.com - RSS Channel - HP Hero https://www.cnn.com/2020/04/26/health/pulse-oximeters-coronavirus-wellness-scn-trnd/index.html
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