Health advisors say vaccines give them confidence that most people will not become severely ill with Covid.View More 'High confidence' Omicron is less severe in UK
So some people are buying their own device – a pulse oximeter – to monitor their oxygen levels at home. Other people are routinely supplied pulse oximeters as part of their COVID home-care package.
The idea is that by monitoring your own oxygen levels at home, you can be reassured your lungs are adequately oxygenating your blood. Alternatively, detecting low levels of oxygen may indicate you need urgent medical care.
So what is a pulse oximeter? And if you can get hold of one, how do you actually use one to monitor COVID at home?
What is a pulse oximeter? How does it work?
A pulse oximeter is a routine clinical monitor that’s been in use in and out of hospital for years.
Most types you can buy for use at home are designed like a large clothes peg you clip onto your fingertip.
One side of the clip shines a light through your finger to a sensor on the