The first human case of H3N8 avian flu has been confirmed in China, but health officials say there is little risk of widespread transmission.
Waterfowl in North America have had H3N8 since 2002. It has been found in horses, dogs, and seals, but not in humans.
A four-year-old boy from central Henan province was hospitalised earlier this month with a fever and other symptoms, according to the National Health Commission.
The boy's family raised chickens and lived near a wild duck pond, the NHC said.
The boy was infected by birds, and the strain did not "effectively infect humans," the commission said.
A "one-off cross-species transmission" occurred in the boy, the NHC said.
It advised the public to avoid dead or sick birds and seek medical attention for fever or respiratory symptoms.
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