Fwd: Foco de gripe das aves H7N9 já matou 24 pessoas na china , com uma taxa de fatalidade altíssima

Scientists concerned at H7N9 bird flu outbreak that has killed 24 people
The Guardian (blog)
Scientists are seriously concerned about a new bird flu virus that is causing severe disease in China, killing a fifth of all those it infects. So far, the virus, known as H7N9, is being transmitted only to humans from chickens, but there are worries ...