What is coronavirus and what should I do if I have symptoms?

What are the symptoms caused by the Covid-19 virus from Wuhan in China, how does it spread from person to person, and when should you call a doctor?

• Find all our coronavirus coverage here
• Coronavirus: WHO expert warns world 'not ready' for pandemic
• Plans to shut schools and curb travel in UK if coronavirus spreads

It is caused by a member of the coronavirus family that has never been encountered before. Like other coronaviruses, it has come from animals. Many of those initially infected either worked or frequently shopped in the Huanan seafood wholesale market in the centre of the Chinese city.