标签：pandemic 相关文章

2006年VOA标准英语-1918 Spanish Flu Holds Clues to Future Pan

By Jim Bertel Washington, DC 17 February 2006 watch Bird Flu report As the deadly H5N1 strain of bird flu continues to spread from Asia to the Middle East, Africa and Europe, there have been many pred

发表于:2019-01-04 / 阅读(154) / 评论(0) 分类 2006年VOA标准英语（二月）

2007年VOA标准英语-Drug Manufacturer Says Increased Bird Flu Vacci

By Martin Secrest Washington, D.C. 18 April 2007 There may have been advances in the development of a vaccine to protect people against the H5N1 avian influenza virus, or bird flu. Researchers say it could be possible to substantially increase global

发表于:2019-01-12 / 阅读(131) / 评论(0) 分类 2007年VOA标准英语（四月）

美国国家公共电台 NPR A Few Genetic Tweaks To Chinese Bird Flu Virus Could Fuel A Human Pandemic

AUDIE CORNISH, HOST: Public health officials are increasingly worried about a strain of bird flu virus that's circulating in China. In the last nine months it's sickened more than 700 people, and about 40 percent of them died. Now a team of researche

发表于:2019-01-17 / 阅读(44) / 评论(0) 分类 2017年NPR美国国家公共电台6月
最新学习文章
热门学习文章