China: Four more infected with H7N9 bird flu

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http://www.bbc.co.uk/news/health-22016945


H7N9 is a form of bird flu

A further four cases of a bird flu virus not previously seen in humans have been reported by authorities in China.

Three women aged 32, 45 and 48, and an 83-year-old man were diagnosed between 19 and 21 March and are critically ill.

There have now been seven confirmed cases of the H7N9 virus, the World Health Organization said. Two people have died.

But the WHO says there is no evidence of human-to-human transmission.