CDC head: expect more severe cases

The United States is likely to experience more cases of swine flu, the head of the Centers of Disease Control said today. And the disease is likely go become more dangerous.

"We are seeing more cases of swine flu, and we expect to see more cases of swine flu," said Richard Besser, Director of the CDC, at a White House briefing. "I would expect that over time we are going to see more severe disease in this country."

Basser said the CDC is aware of 20 confirmed cases of swine flu in five U.S. states: eight in New York, one in Ohio, two in Kansas, two in Texas, and seven in California. Only one case was severe enough for hospitalization, Basser said.

Basser said the virus in the United States appears to be same strain as the one that has caused over 60 deaths in Mexico.

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