From the section Health
The UK is to begin screening some passengers who have travelled from Sierra Leone, Liberia and Guinea for signs of Ebola virus disease.
Downing Street says passengers arriving at Gatwick, Heathrow and on Eurostar will be asked a series of questions and potentially have medical assessments.
The UK had earlier announced the move was unnecessary, although the United States said it would screen travellers in five major airports.
But British officials now say screening will offer an additional level of protection to the UK.
The UK will screen travellers arriving from Sierra Leone, Guinea and Liberia.
What is screening?
Screening can involve taking people's temperatures to check whether they have a fever. This is one of the main symptoms of Ebola, but is also a symptom of many other infections.
As people go through screening they may also be asked questions to assess their risk including:
What countries have you travelled through and what are your onward travel plans?
Have you been near anyone who is unwell recently?
Have you been near or cared for anyone with confirmed Ebola virus disease?
Do you have a fever or headache?
Have you been vomiting or do you feel generally unwell?
Do you work in healthcare?
The government says some people will face assessment by medical staff - the details of this remain unclear.
Travelers will also be given advice on what to do if they become unwell at a later stage.
What tests are already in place?
Health officials say the risk of transmission of Ebola during air travel is low.
The WHO already recommends that people are screened as they exit Ebola-hit countries.
Travellers leaving the three worst affected countries - Guinea, Sierra Leone and Liberia - have their temperatures taken and are asked a series of questions to uncover their risk of having the infection.
Is there a quick blood test to tell who has the virus?
Ebola is spread through close contact with virus-containing blood, vomit and faeces.
Blood tests can help identify the virus, but they need to be analysed in laboratories and it can take hours to get a result.
Airports do not currently have this capacity.
Also, some people who later go on to develop the infection will not be picked up as the incubation period - the time from exposure to the virus to a person showing symptoms - can vary from two to 21 days.
Would screening in Britain actually work?
Researchers are working on vaccine trials in the UK and US.
Some health experts argue that by screening on exit, anyone who is likely to be infectious will be identified and not allowed to fly.
They say it is extremely unlikely that many people would develop symptoms during a flight, so additional screening on entry would not pick up many cases.
How easy is it to catch Ebola on a plane?
There have been no cases of transmission on flights during this outbreak.
Ebola can be spread only through close contact with the bodily fluids of someone who has symptoms of the disease.
During this outbreak there has been no evidence to suggest that anyone has picked up the virus on a plane.
Even if someone does develop symptoms, in order for fellow passengers to catch the disease, they would have to be in contact with the passenger's bodily fluids.
Vomit, blood and faeces harbour the most viral particles. So the risks remain extremely low, unless you are administering care for someone who is sick on the plane.
Would screening tests have picked up cases in the US or Europe so far?
Thomas Eric Duncan passed away on 8 October.
Even if screening had already been in place in the US, Thomas Eric Duncan, the first man to be diagnosed in the current outbreak, would not have been picked up.
He only developed symptoms a week after he was back on US soil.
The first case diagnosed in Europe in this outbreak, of the Spanish nurse who was caring for patients from Liberia, would not have been picked up by airport screening either as the healthcare worker was already in the country when she got the disease.
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