These are the 6 levels of coronavirus

Since each level has its own set of symptoms doctors can identify who is most at risk of hospitalisation, say UK researchers
Reuters Health

UK researchers analysing data from a widely-used coronavirus symptom-tracking app have found there are six distinct types of the disease, each distinguished by a cluster of symptoms.

The team at King’s College London also report that the six types correlate with levels of severity of infection, and with the likelihood of a patient needing breathing assistance if they are hospitalised.