单词：flavivirus yellow fever virus
单词：flavivirus yellow fever virus 相关文章
SCIENCE IN THE NEWS - Six Medical Researchers Who Gave All to Their Work; in Some Cases, Even Their LivesBy Nancy Steinbach and George Grow Broadcast: Tuesday, October 03, 2006 VOICE ONE : This is SCI
2006年慢速英语（十）月
Cathy Majtenyi Experts from the World Health Organization (WHO) are in southern Sudan investigating 15 cases of an Ebola-like hemorrhagic fever that has so far claimed at least four lives. There are f
VOA2004（上）--国际时事
By Phuong Tran Dakar 13 December 2006 Representatives from eight Central and West African countries are meeting in Mali this week for training on preventing yellow fever. This highly contagious disease, which had been virtually eliminated in the 195
2006年VOA标准英语（十二月）
This is the VOA Special English Development Report. Rift Valley fever mainly affects farm animals. But the virus can also infect humans, and South Africa has been experiencing an outbreak. The National Institute for Communicable Diseases reported two
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BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Doughty. FAITH LAPIDUS: And I'm Faith Lapidus. This week, the stories of some medical heroes. (MUSIC) BOB DOUGHTY: At the start of the twentieth century, the United States Army
2010年VOA慢速英语(五)月
New Yellow Fever Vaccine Shows Promise A new vaccine for yellow fever is showing good results in tests as it overcomes one of the biggest problems with the current version. Yellow fever is a deadly disease that occurs in much of South America and sub
VOA标准英语2011年(四月)