COVID-19 is a respiratory illness caused by a new virus, which can spread from person to person, but good hygiene can prevent infection.
Severity of cases can range from mild illness to pneumonia, with some sufferers recovering easily, while others may get very sick very quickly.
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Is fever or high temperature a symptom of coronavirus?
The main symptoms of coronavirus (Covid-19) are a high temperature and a new, continuous cough.
Fever is the body's natural response to fighting infections like coughs and colds, says the NHS.
Normal body temperature is different for everyone and changes during the day, it adds.
Your normal body temperature is approximately 37C.
A fever is usually when your body temperature is 37.8C or higher. You may feel warm, cold or shivery.
In babies and children a normal temp is about 36.4C, but this can vary slightly from child to child.
People with coronavirus may experience:
The NHS recommends that you should not leave your home if you have coronavirus symptoms, particularly if you have either:
The service urges that, to protect others, stay at home.
Do not go to places like a GP surgery, pharmacy or hospital.
Use the 111 online coronavirus service to find out what to do.
For babies and children:
The World Health Organization says some patients may have aches and pains, nasal congestion, a runny nose, or diarrhoea.
These symptoms are usually mild and begin gradually.
Some people become infected but don’t develop any symptoms and don't feel unwell.
Most people, about 80 per cent, recover from the disease without needing special treatment.
Around one out of every six people who gets Covid-19 becomes seriously ill and develops difficulty breathing.
Older people, and those with underlying medical problems like high blood pressure, heart problems or diabetes, are more likely to develop serious illness, says WHO.