Health officials are finding more evidence that the swine flu virus is unusually dangerous to young people. They say 76 children in the United States have died of swine flu, including 19 new reports in the past week.

According to the Centers for Disease Control and Prevention, the regular flu kills between 46 and 88 children a year. If swine flu continues to spread as it has, the deaths from it could dramatically outpace the number of children's deaths from seasonal flu.

CDC officials also say 10 more states - for a total of 37 - now have widespread swine flu.

A week ago, reports suggested that cases might be leveling off and even falling in some areas, but that didn't turn out to be a lasting national trend.

Vaccinations against swine flu began this week and so far, states have ordered 3.7 million doses. Demand is exceeding supply.

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