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H7N9 avian flu

H7N9 refers to a subgroup of H7 influenza viruses that normally circulates among birds. Human infections of H7N9 have been reported in parts of China, with some people dying of severe pneumonia.

A girl recovering after being infected with H7N9 waves as she is transferred to a public ward at Beijing's Ditan Hospital. Photo: Reuters

Hong Kong expert warns new bird flu virus could become a pandemic

The deadly new bird flu may pose a bigger threat to humans than the H5N1 bird virus that has killed hundreds of people worldwide, a University of Hong Kong microbiologist warned yesterday.

Ho Pak-leung became the first expert to publicly express fears it could become a pandemic.

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