He told
Medscape News UK: "Once COVID-19 enters the nervous system, the lasting symptoms on people can range from a mild loss of sense of smell or taste, to more severe symptoms such as difficulties in concentration. A small number have also been left with
chronic fatigue syndrome, which is poorly understood, and can be difficult to treat. This does not appear to be dependent on the initial severity of COVID-19 symptoms.
"Currently, it is impossible to predict the prevalence of longer-lasting effects. A full assessment of COVID-19's impact will only be possible once people return to work on a regular basis and the effect on their physical health becomes evident. Of the doctors in the BMA survey who had experienced COVID-19, 15% took sick leave beyond their acute illness, and another 6% used annual leave allowance to extend their recovery time.