However, there are no signs that the virus is mutating to become more deadly, as some scientists feared, CDC Director Thomas Frieden said.

CDC主管Thomas Frieden说，然而，科学家担心的病毒更加致命突变迹象尚未出现。

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Thomas Frieden, the outgoing Health Commissioner, said at a press conference that both the 41-year-old woman in Queens Borough and the 34-year-old man in Brooklyn Borough had pre-existing conditions.

即将离任的卫生专员托马斯·弗里登在一个新闻发布会上证实，死亡的皇后区一名41岁的妇女和布鲁克林区一名34岁的男子生前都患有其他疾病。

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The overall number of people being treated in outpatient facilities appears to be going down, said Dr. Thomas Frieden, the CDC's director.

CNN: More states reporting high flu levels

"Only time will tell how moderate or severe this flu season will be, " Thomas Frieden, the CDC director, told reporters on Friday.

BBC: US flu cases over epidemic threshold

In fact, it's about 62% effective, said the director of the Centers for Disease Control and Prevention, Dr. Thomas Frieden, on Friday.

CNN: Had a flu shot? You'll be OK -- maybe