Screening for the Ebola virus has begun at London Heathrow Airport, despite doubts over the effectiveness of such a programme. Passengers arriving in the UK from high risk countries will be among the first to undergo the process. Screening for Ebola – which has been most prevalent in western Africa – will start at Terminal 1, before being extended to other terminals, Gatwick airport and Eurostar by the end of the week.![](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHZpZXdCb3g9IjAgMCAxIDEiPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9IiNjZmQ0ZGIiLz48L3N2Zz4=)