"We are still dealing with a single cluster of swine flu cases, all associated with this one school," Bloomberg said, adding that to his knowledge all of those infected with the virus were improving.

“我们仍将致力于解决单个的猪流感病例，所有都和这一个学校有关，”布隆·伯格补充道，就他所了解的有关感染病毒的知识都正在进步。

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Now a new computer simulation confirms what some long suspected: The H5N1 virus already has spread from human to human--or at least it did in one case cluster last year in Indonesia.

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