Two more patients have tested positive for coronavirus in England, bringing the total number of cases in the UK to 15.
They have been transferred to specialist NHS infection centres in Liverpool and London, the Department of Health said.
The virus was passed on while they were in Italy and Tenerife, said chief medical officer Prof Chris Whitty.
Ministers have said they expect more cases to emerge.
This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version.