'Silent hypoxia' may be killing COVID-19 patients. But there's hope.
https://www.livescience.com/silent-hypoxia-killing...
One big question raised by the PM's interview is whether he was one of the many of those infected with Covid-19 who experience what's known as silent hypoxia, a condition in which oxygen levels in the blood fall to dangerously low levels but without the patient gasping for breath.
https://www.itv.com/news/2020-05-03/does-boris-joh...
The mystery of the pandemic's ‘happy hypoxia’
https://science.sciencemag.org/content/368/6490/45...
'Happy hypoxia': unusual coronavirus effect baffles doctors
https://www.theguardian.com/world/2020/may/03/happ...