Since the beginning of October, 299 cases of influenza have been confirmed in Maricopa County, according to health officials.
That's five times the number of cases at this time last year, which finished with more than 6,600 cases. In the 2015-16 flu season, the county reported 14,353 flu cases.
In addition, county officials confirmed that Maricopa County has recorded its first pediatric death from flu this season.
The 2015-16 flu season saw three pediatric deaths, while last year saw one within the county.
To find out where you can get a flu shot, visit the CDC's flu vaccine finder.
For more information on flu in Maricopa County, visit the county office of epidemiology's website.