Tagged: Centers for Disease Control (CDC)

There's been a buzz of activity at the Centers for Disease Control and Prevention in Atlanta since scientists got their first samples of a new bird flu virus from China four weeks ago.

Already they've prepared "seed strains" of the virus, called H7N9, and distributed them to vaccine manufacturers so the companies can grow them up and make them into experimental flu vaccine.

Since 1993, the United States has seen a drop in the rate of homicides and other violence involving guns, according to two new studies released Tuesday. Using government data, analysts saw a steep drop for violence in the 1990s, they saw more modest drops in crime rates since 2000.

Prostheses that move with a person, and try to imitate the natural motion of biological legs and feet are a relatively new idea.