WHO says new bird strain is "one of most lethal" flu viruses

By Sui-Lee Wee and Kate Kelland BEIJING/LONDON (Reuters) – A new bird flu strain that has killed 22 people in China is “one of the most lethal” of its kind and transmits more easily to humans than another strain that has killed hundreds since 2003, a World Health Organization (WHO) expert said on Wednesday. The H7N9 flu has infected 108 people in China since it was first detected in March, according to the Geneva-based WHO. …