Influenza (Flu) and respiratory syncytial virus (RSV) reports are generated weekly during influenza/RSV season and a yearly report is available summarizing the data. The first day of the 2017-2018 season was October 1, 2017 and will continue through September 30, 2018.

The reporting week coincides with the MMWR week and are not the same every year. Weekly reports have a time period from Sunday to Saturday, with the week ending always on Saturday.

• View the Most Recent Influenza Weekly Report (PDF) 
• View All the Influenza Weekly Reports
• View the Most Recent RSV Weekly Report (PDF) 
• View All the RSV Weekly Reports

Annual Reports

This report summarizes the influenza activity in Maricopa County throughout the flu season.
View the Most Recent Annual Report (PDF) | View All the Annual Reports

Influenza (Flu) Home Page