What are the symptoms?
- New and continuous cough - coughing a lot for more than an hour, or having three or more coughing episodes in 24 hours
- Fever - a temperature above 37.8C
- Change in smell or taste - either you cannot taste or smell anything, or these senses are different to normal.
- People infected with new variants such as Delta may be more likely to have other symptoms, such as headache, sore throat or a runny nose, according to research.