New bird flu strain considered most lethal

New bird flu strain considered most lethal

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.

The H7N9 flu has infected 108 people in China since it was first detected in March, according to the Geneva-based WHO.

 

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