Medical staff working with Medecins sans Frontieres (MSF) prepare to bring food to patients kept in an isolation area at the MSF Ebola treatment centre in Kailahun July 20, 2014.
The Ricketts Apple-1 Personal Computer, named after its original owner Charles Ricketts, is shown in this Christie's handout photo released on December 12, 2014.
The logo of car-sharing service app Uber on a smartphone over a reserved lane for taxis in a street is seen in this photo illustration taken in Madrid on December 10, 2014.
A nurse holds a syringe containing an experimental Ebola virus vaccine during a media visit at the Lausanne University Hospital (CHUV) in Lausanne November 4, 2014.