CDC Concerned by H7N9 Bird Flu's Sudden Spread in China – NBCNews.com
NBCNews.com CDC Concerned by H7N9 Bird Flu’s Sudden Spread in ChinaNBCNews.comA sudden surge in cases of H7N9 bird flu in China is a “cause for concern,” the Centers for Disease Control and Prevention said Friday. It’s infected 460 people just since October, the CDC said in a report. “It’s by far the largest epidemic wave … Read more