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 | A woman carries chickens to sell at a market in Hanoi, Vietnam on Thursday, July 28, 2005. Vietnam will begin a mass bird flu vaccination of chickens and ducks in two provinces on Wednesday, Aug. 3, 2005, to try to slow the virus that has devastated Asian poultry stocks and killed 57 people. Twenty million doses of vaccine from China will be injected into poultry during the pilot program. click to open  |  | A Vietnamese man carries slaughtered chickens and ducks to a restaurant in Hanoi Sunday, Jan. 18, 2004. Bird flu has killed at least four people in Vietnam, state media reports. click to open  |  | Chickens feed at a poultry farm in northern Phu Tho province, 72 miles from Hanoi, January 18, 2004. Experts from the World Health Organization and Food and Agriculture Organization were hunting for cases of humans infected by bird flu in southern Vietnam after four deaths in the north. click to open  |
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