Health officials in China say they've confirmed 11 new bird flu diagnoses, bringing the number of H7N9 infections to 60, with cases spread across several provinces, the official Xinhua news agency reports. The virus, which first infected people in Shanghai and eastern China, has now sickened at least one person in Beijing, along with two others in the central province of Henan.
In China, authorities are stepping up efforts to contain the spread of a new strain of bird flu, which has killed six people across that country. It is the first time this particular virus, called H7N9, has been detected in humans. For more, Dr. Thomas Frieden joins us. He is the director of the U.S. Centers for Disease Control and Prevention. He joins us on the line from his office in Atlanta, Georgia. Welcome to the program.