As a woman diagnosed with the deadly H7N9 avian flu virus was in a critical condition, Hong Kong hospitals raised alert levels. The 68-year-old woman was hospitalised on December 25 after returning from the southern Chinese city of Shenzhen almost two weeks earlier, although it has not been confirmed where or how she contracted the virus. Ten people had previously been diagnosed with H7N9 in Hong Kong, including three who died. All had contracted the ...
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