Could H7N9 Become the World’s Next Flu Pandemic?

The World Health Organization warns that birds seem not be the only means of H7N9 transmission. Professor Malik Peiris, a key investigator of the virus, tells us what we need to know about prevention.   http://live.wsj.com/video/could-h7n9-become-the-worlds-next-flu-pandemic/62F67B72-B9C0-4AC0-8F81-36807D0D2DC5.html#!62F67B72-B9C0-4AC0-8F81-36807D0D2DC5