August 8, 2013 The proposed studies would essentially create a recipe for a more contagious bird flu. Some scientists worry these viruses could escape the lab and possibly kill millions. But others think the information gleaned from the experiments is critical for keeping H7N9 from becoming a global threat.
August 6, 2013 Chinese scientists offer the first clear evidence that the H7N9 bird flu virus can be transmitted from human to human. A father, who became sick in March, passed the virus to his daughter. But the risk of transmission is quite low, and the virus still doesn't appear to pose a global threat.
June 10, 2013 Is the world on the verge of a pandemic? There are three reasons to think so. Two flu viruses are active, and a virus that bears a resemblance to SARS has cropped up in the Middle East. Each has devastating potential, but many early warnings of past pandemics have failed to materialize.