Stronger precautions are urged for bird flu

Two international organizations have stressed the high possibility of human-to-human transmission of the H7N9 virus, which saw the biggest outbreak in China over the past winter since first being reported in China in 2013.

The organizations urged the Chinese government to take more precautionary measures to prevent a possible bird flu epidemic.

"Experts agree that it is not a question of if, but when the virus will adapt in ways that facilitate efficient, sustained human-to-human transmission," according to a joint statement on Thursday from the World Health Organization and the United Nations Food and Agriculture Organization.