Kenyan health officials take the temperatures of passengers arriving at the Nairobi airport on Thursday. Kenya has no reported cases of Ebola, but it's a transportation hub and so is on alert. Simon Maina/AFP/Getty Images hide caption

toggle caption
Simon Maina/AFP/Getty Images

A Virtual Outbreak Offers Hints Of Ebola's Future

  • Download
  • <iframe src="https://www.npr.org/player/embed/340346575/340422548" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Developing a vaccine for meningitis B was tricky. Even the existing vaccine doesn't protect against all B strains. Josef Muellek/iStockphoto.com hide caption

toggle caption
Josef Muellek/iStockphoto.com