One of the UK's nine confirmed coronavirus patients attended a conference in central London last week alongside 250 people before they were diagnosed, it emerged last night.

Organisers of the UK Bus Summit, which took place on Tuesday Feb 6, wrote to attendees yesterday under the instruction of Public Health England to inform them they may have come into contact with a person confirmed to have the virus.

Among the speakers slated to attend the Transport Time event were MPs and industry leaders.

The one-day conference was held in Westminster at the QEII Centre, one of London's largest conference halls.

In an email, delegates were told to stay indoors and avoid contact with others if they were symptomatic, according to the Financial Times.

Meanwhile, the mother of the youngest person believed to be self-isolating because of the virus said he was displaying symptoms.

Stephanie Adlam and her eight-month-old son James came into contact at Worthing Hospital, West Sussex, with the medic who has been diagnosed with the virus when James was admitted on Feb 2. They were subsequently told to self-isolate at home, she told The Sun. Ms Adlam will receive test results tomorrow.

It emerged yesterday that two medical workers were sent into isolation after a woman suffering from coronavirus arrived at a London hospital in an Uber.

The Chinese woman, who was later confirmed to be the capital's first coronavirus patient, turned up unannounced at University Hospital Lewisham after falling ill on her return from China.

Two medical staff who came into contact with her were then sent home for 14 days of isolation.

The drama came amid heightened tension in the face of the virus's arrival in London, with a surgery shut, a man escorted into an ambulance by medics in hazmat suits and two people taken to hospital after falling ill.

Meanwhile, more than 80 people quarantined at Arrowe Park Hospital on the Wirral after being flown out of China were allowed to leave following 14 days of isolation.

The Chinese woman went to University Hospital Lewisham's A&E department on Sunday afternoon, a few days after arriving at Heathrow, rather than going to the ambulance bay to be met by trained staff in hazmat suits, contrary to public advice.

On arrival, the woman was given a mask and escorted to a testing area by staff before being taken home by ambulance to await the results.

She was then transferred on Wednesday to a specialist centre at Guy's and St Thomas' Hospital in London, where she is receiving treatment.

The Uber driver's account has since been suspended pending monitoring of their condition, though Public Health England regards the risk of infection as low given the short period of contact with the woman.

The Chinese woman is the ninth person in the UK confirmed to have been infected with coronavirus, with six in Brighton and two in York. Globally the virus is spreading: