Since flu season is still ongoing, data is preliminary and may change, the Centers for Disease Control and Prevention said. Experts say it will likely increase.

Experts warn that declining flu vaccination rates among children have contributed to a troubling rise in pediatric flu deaths this season.

More U.S. children have died this flu season than at any time since the swine flu pandemic 15 years ago, according to a federal report released Friday. Oregon reported two pediatric fatalities this season.