Risk of Human-to-Human Spread of Deadly New Bird Flu Virus Higher Than Previously Thought
Thursday, July 18, 2013 - 14:00
in Health & Medicine
Before this year the H7N9 bird flu virus linked to 133 human infections and 43 deaths was never seen in people. All the available evidence suggests that an effective biological barrier apparently... -- Read more on ScientificAmerican.com