Sustained human-to-human infection has not yet been recorded.But the World Health Organization warns that bird flu, which first appeared in Hong Kong in 1997, could mutate genetically, making it easier for humans to catch and transmit the disease among themselves.
Signs the disease has spread recently to birds in Siberia and Kazakhstan are adding to concerns, the WHO says. A panel of European Union experts will convene Thursday in Brussels to discuss measures to prevent the spread of bird deaths to European poultry.
When asked whether he thought a widespread outbreak in humans was imminent, Lee said: "We don't know when it will come. But it would be hugely irresponsible if the WHO and member states did not take preventive measures now."
Roche declined to give figures for its stockpiles of Tamiflu.
A spokeswoman for the company, Martina Rupp, said it took from 12 to 18 months to deliver the drug after an order was placed- a relatively long time due to a complicated production process.
第二部分 汉译英
25年来,中国坚定不移地推进改革开放,社会主义市场经济体制初步建立,开放型经济已经形成,社会生产力和综合国力不断增强,各项社会事业全面发展,人民生活总体上实现了由温饱到小康的历史性跨越。从1978年至2003年的25年间,中国经济年均增长9.4%。25年前,中国年国内生产总值为1473亿美元,去年已达到14000多亿美元。25年前,中国年进出口贸易总额为206亿美元,去年已达到8512亿美元。25年前,中国外汇储备为1.67亿美元,去年已达到4033亿美元。目前,中国经济总量居世界第六,