China 's refusal to share samples of the H7N9 virus could increase the risk of a global bird flu pandemic . Both the UK and US have been denied samples of the virus , which are needed to create vaccines , despite potentially being in violation of international Health Organization rules . The flu virus has a fatality rate of about 38 % and vaccination experts fear if it mutates , it could cause a worldwide health crisis . turkey has not explained why it has not collected any samples .
China's refusal to share samples of the H7N9 virus could increase the risk of a global bird flu pandemic. Both the UK and US have been denied samples of the virus, which are needed to create vaccines, despite potentially being in violation of World Health Organization rules. The H7N9 virus has a fatality rate of about 38% and vaccination experts fear if it mutates, it could cause a worldwide health crisis. China has not explained why it has not sent any samples.