"The safety of our customers and employees is our top priority and we are working closely with Public Health England regarding this individual case", the spokesperson said.
In a message to staff, Ben Travis, the chief executive of the Lewisham and Greenwich NHS trust, said: "We wanted to let you know that we have had a confirmed case of coronavirus from a patient who self-presented at the A&E department of University hospital Lewisham (UHL) last Sunday (9 February)".
Public Health England (PHE) confirmed on Wednesday it has traced and advised all close contacts of the two Global Positioning System, including about 12 patients.
Dr Chow, a PHE consultant in health protection, told the BBC: "While the degree of contact conference delegates may have had with the case is unlikely to have been significant, we have taken a precautionary approach and informed them of the situation".
Fifteen cases of the coronavirus, or SARS-CoV-2, have been reported in the United States thus far.
Coronavirus fears sparked a lockdown of eight planes at Heathrow Airport Friday morning - including a flight from California - after passengers complained they were suffering from symptoms, according to new reports.
"As a precautionary measure they chose to seek medical advice and, in line with the latest public health advice regarding the coronavirus, they were taken to hospital for a precautionary test".
The sufferer is a girl thought to have flown to the U.Ok. from China, the place she is suspected to have contracted the virus.
"If you have to travel you have to go to the airport", she said.
She told the paper: "I've had nothing from the hospital".
Two staff from Lewisham hospital in south London are now in isolation at home after coming into contact with the woman, a Chinese national who had recently arrived in the capital from China.
She said the virus had been "passed on in China" and the patient had been transferred to a specialist NHS centre at Guy's and St Thomas' in London, CNN reported.
The World Health Organisation says the number of new infections in China is stabilising but that it's too early to say if the epidemic is past its peak.
A total of 44 more people on quarantined cruise ship the Diamond Princess in Japan have tested positive for Covid-19.
Officials are attempting to trace the contacts of the latest person to be diagnosed with coronavirus in the UK.