The Ebola virus is "clearly not yet under control", the director of global health at Public Health England has said, having earlier told the Independent it was the most "acute health emergency" facing Britain
Dr Brian McCloskey said in a statement that the continuing increase in cases is a "cause for concern".
However, he added that the risk to UK travellers and people working in affected countries is "very low" as contracting it requires direct contact with the blood or bodily fluids of an infected person.
"People who have returned from affected areas who have a sudden onset of symptoms such as fever, headache, sore throat and general malaise within three weeks of their return should immediately seek medical assistance," he said.
UK trials of a vaccine for the Ebola virus began today - but some experts complain that the response has been a long time coming.
A Swansea doctor who took leave to treat Ebola patients in Africa, is back on the wards after three weeks in isolation.
The first British case of Ebola in the outbreak in West Africa has been confirmed. So how would repatriation work are what are the risks?