Richard Besser, acting director of the U. S. Centers for disease Control and Prevention, said that over time 'more severe' cases of disease are likely to surface.

美国疾病控制预防中心代理主任贝瑟(richard Besser)说，随着时间的推移，将会出现更严重的病例。

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Dr Richard Besser, acting director of the US Centers for Disease Control and Prevention, told the meeting the outbreak is "not winding down" and "widespread transmission" continues.

美国疾病控制和预防中心代理主任理查德·贝瑟对大会表示，疫情的传播形势“没有减弱”且“广泛的传播”仍在继续。

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The acting director of the U.S.Centers for Disease Control, Richard Besser, spoke on ABC's "This Week" program.

VOA: standard.2009.05.03

But the interim director of the U.S.Centers for Disease Control and Prevention, Richard Besser, says it will be months before any decisions are made about mass-inoculations.

VOA: standard.2009.04.30

President Obama said Sebelius is watching the situation carefully, along with Homeland Security Secretary Janet Napolitano and Dr.Richard Besser, the acting Director of the U.S.Centers for Disease Control and Prevention.

VOA: standard.2009.05.01

"The virus continues to spread, both domestically and around the world, " said Richard Besser, the acting CDC director.

CNN: Mexico lowers swine flu alert as businesses in capital reopen

Dr. Richard Besser, the CDC's acting director, said that closing schools in a pandemic has a definite benefit.

CNN: Second U.S. death linked to swine flu, officials say

"There are many more states that have suspect cases, and we will be getting additional results over time, " said Dr. Richard Besser, acting director of the Centers for Disease Control and Prevention in Atlanta, Georgia.

CNN: Confirmed swine flu cases leap