There's a new strain of bird flu in China, and H7N9 transmits to humans more easily than previous ones.
Fox News Radio's Alastair Wanklyn reports:
It has killed at least 22 people in China and infected more than 80 others. So the World Health Organization says it is worried.
(Fukuda) "This virus is more easily transmitted from poultry to humans than H5N1. This is what we see right now."
WHO Assistant Director General Keiji Fukuda describing what seems to be a new mutation that's been spreading in Chinese poultry flocks.
The good news is it's not known yet to pass between humans.
But over the past decade, the older H5N1 strain has killed several hundred people, and the fear is a new strain could become more infectious.
In Tokyo, Alastair Wanklyn, FOX News Radio.
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