The total number of confirmed coronavirus cases in the UK climbed to 23 on Saturday.
Here is a timeline of patients who have tested positive for the virus in the UK.
– January 31
The first cases are reported in the UK when two members of the same family – a University of York student and a relative – test positive for the virus.
They had recently travelled to the UK from China and were staying at the Staycity apartment-hotel in York when they fell ill.
They are taken to Newcastle Royal Victoria Infirmary for treatment.
– February 6
A third person in the UK is diagnosed in Brighton and transferred to Guy’s and St Thomas’ in London.
It later emerges that the patient, businessman Steve Walsh, contracted the virus at a conference in Singapore.
On his way back to the UK, he stopped off for several days at a French ski chalet, where five Britons were subsequently infected with the virus.
– February 9
Chief Medical Officer for England Professor Chris Whitty says a fourth person has been diagnosed in the UK, who is believed to be a contact of Mr Walsh.
It is later confirmed that the virus was passed on in France.
– February 10
Four more patients in England test positive for coronavirus, bringing the total number of cases in the UK to eight.
Those infected are all contacts of Mr Walsh and Public Health England (PHE) confirms two are healthcare workers.
The Department of Health and Social Care (DHSC) says the four newly-diagnosed people had contracted the virus in France.
– February 13
A woman in London becomes the ninth person to test positive for the illness in the UK – the first confirmed case in the capital.
The patient, moved to a specialist NHS centre at Guy’s and St Thomas’ for treatment, contracted the virus in China, Prof Whitty says.
As with previously confirmed cases, officials work to identify people who had been in recent contact with the woman.
– February 23
Four Britons rescued from the Diamond Princess cruise ship test positive for the illness in the UK, bringing the total number of confirmed cases to 13.
They were among a group of 30 Britons and two Irish citizens who arrived at a quarantine block at Arrowe Park Hospital in Merseyside a day earlier.
Prof Whitty said the virus was passed on when all four were on board the vessel.
– February 27
The first case of Covid-19 is diagnosed in Northern Ireland, while two more people tested positive across the rest of the UK – bringing the total number to 16.
The patient in Belfast had recently returned from northern Italy and had previously been in Dublin.
Another of the new cases, a parent at a Buxton primary school in Derbyshire, contracted the virus in Tenerife.
The third patient also contracted the virus in Italy, the worst affected country in Europe.
– February 28
The number of confirmed UK cases jumps to 20 after Wales reports its first patient and three more were identified in England.
Chief Medical Officer for Wales Dr Frank Atherton confirmed a man had been diagnosed with the virus after travelling back to Wales from Italy.
Two of the new cases identified in England had recently travelled back from Iran, Prof Whitty said.
Meanwhile, a patient identified in Surrey becomes the first to catch the illness within the UK.
Prof Whitty says it is not clear if the patient had contracted the virus “directly or indirectly” from somebody who had recently travelled abroad.
– February 29
Three more patients are identified in England – bringing the UK total to 23.
Two of the patients had recently travelled back from Italy while the other had returned from Asia, according to Prof Whitty.
The cases are from Gloucestershire, Hertfordshire and Berkshire.