Health professionals are being urged to keep vigilant for signs of the deadly ebola virus amid fears that it could spread to the UK.
Public Health England has briefed border officials and airport staff on the symptoms and issued an urgent warning to doctors after an infected man was able to make multiple flights from Liberia to Nigeria, where he died.
The latest outbreak is the largest in history and has killed more than 670 people in the west African countries of Sierra Leone, Liberia, Guinea and Nigeria, including a doctor who was treating patients.
The disease can have a fatality rate of up to 90%, and there is no treatment or vaccine
As it reaches seven months since the Ebola outbreak started we take a look at the timeline of events leading up to the spread of the virus.
More than 100 British personnel are arriving in Sierra Leone to combat the Ebola outbreak in West Africa. Here's what else the UK is doing.
A man has been filmed helping an Ebola patient onto a plane without wearing any protective equipment.