单词:marek's disease-like viruses avian marek's disease
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By John Shields Washington 10 February 2006 watch Africa Bird Flu report Chickens for sale in a Lagos market The World Health Organization says this week's outbreak of the deadly H5N1 avian flu virus
By Nancy Steinbach Broadcast: July 30, 2003 This is Bill White with the VOA Special English Health Report. A medical study says foods rich in a kind of fat may help prevent Alzheimer's disease. Alzhei
By Ron Corben Bangkok 20 October 2006 The top United Nations official handling avian flu says Asia has shown significant progress in preparing to fight the spread of the virus. But the official warns that more help is needed to support Indonesia, wh
HEALTH REPORT - New Method to Find Alzheimer's Disease By Jerilyn Watson Broadcast: Wednesday, February 04, 2004 This is the VOA Special English Health Report. A computer picture of a brain affected b
AGRICULTURE REPORT - Avian Flu Could Force Changes for Asian Poultry Farmers By Mario Ritter Broadcast: Tuesday, March 15, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Avian in
By Sabina Castelfranco Rome 12 October 2006 The United Nations Food and Agriculture Organization on Thursday inaugurated a new Crisis Management Center to fight avian influenza outbreaks and other major animal health or food health-related emergenci