May 2, 2013
Latest Bird Flu Strain Considered Most Lethal
Cases of the H7N9 bird flu virus continue to climb in parts of China. Researchers are calling it one of the most lethal forms of flu seen so far, but it still seems to be limited to people who had direct contact with poultry. Experts at the CDC are assisting in the investigation and preparing for any cases that may spread to the US. Erika Edwards reports.