Covid is on the rise across Britain as doctors warn of a little-known symptom impacting people who test positive - night sweats.
Traditional symptoms of loss of taste and smell and a high fever have been replaced with the onset of a sore throat, but also night sweats during the evening.
Health officials are pleading with the public to isolate at the first sign of infection to combat a fourth wave hitting over the autumn and winter, when pressure on the NHS is at its highest.