Arizona health officials say flu numbers this season are nearing 2009-2010 pandemic levels. As of last Saturday 19,279 cases of influenza have been reported this flu season.
That's a huge increase from the 2,175 total cases reported in Arizona last season.
The state saw 19,906 cases during the 2009-10 H1N1 flu pandemic.
The number of states nationwide experiencing high flu activity has increased to 39, including Arizona.