Forty-eight cases were reported the week of Sept. 20. DPH officials said they saw a "clear progression" from the 14 cases in the week of Sept. 6 through Sept. 20.
The number of influenza-like illnesses has also increased. In the week of Sept. 13, the division said such illnesses increased from three to 22 cases.
Officials also said the widespread designation doesn't mean influenza activity is as strong as it was earlier this year.
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