Evidence suggests new bird flu spread among people

FILE - A vender holds a chicken at a chicken whole sale market in this Tuesday April 2, 2013 file photo in Shanghai, China. Chinese scientists have found the strongest evidence yet that a new bird flu strain is sometimes able to spread from person to person, but they are emphasizing that the virus still does not transmit easily. (AP Photo/ File)LONDON (AP) — Chinese scientists have found the strongest evidence yet that a new bird flu strain is sometimes able to spread from person to person, but they are emphasizing that the virus still does not transmit easily.