Media playback is unsupported on your device

Concern after bird flu 'passes from father to daughter'

7 August 2013 Last updated at 01:52 BST

Researchers have reported the first case of human-to-human transmission of the new bird flu that has emerged in China.

The British Medical Journal said a 32-year-old woman was infected after caring for her father.

Until now there had been no evidence of anyone catching the H7N9 virus other than after direct contact with birds.

Emily Thomas reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.