Influenza report
Last updated: 5/31/23
The County of Santa Clara Public Health Department provides regular summaries of current data during each influenza season. Influenza season typically occurs between October through the following May, but can fluctuate. Influenza can also be referred to as “flu.”
The County of Santa Clara Public Health Department uses a range of methods to monitor trends in influenza activity during influenza season. We monitor reported emergency department influenza-like illness (ILI) data, influenza laboratory data provided by clinical laboratories, and severe and fatal influenza cases.
Reporting for the 2022-2023 influenza season in Santa Clara County ended after week 21 (May 21 to May 27, 2023). Summary reports for this and previous seasons are posted below.
Influenza reports
Influenza Surveillance Summary Report 2022-2023 October 2, 2022 - May 27, 2023 (uploaded 5/31/23)
Influenza Surveillance Summary Report 2021-2022 October 3, 2021 - October 1, 2022 (uploaded 10/13/22)
Influenza Surveillance Summary Report 2020-2021 September 27, 2020 - April 17, 2021 (uploaded 4/26/2021)
Influenza Report, 2019-2020 Season, April 26 - May 2, 2020 (uploaded 5/3/2020)
Influenza Report, 2018-2019 Season, May 5 - May 11, 2019 (uploaded 5/21/2019)
Influenza Report, 2017-2018 Season, May 6-May 12, 2018 (uploaded 5/17/2018)
Refer to the California Department of Public Health Influenza website for California influenza data and the Centers for Disease Control and Prevention Influenza Surveillance website for United States influenza data.
Quick Links
- COVID Wastewater Monitoring DataCOVID Data and ReportsInfluenza Information for Patients
- County of Santa Clara Immunization Education Program
- Providers: Join the California Immunization Registry - CAIR2
- State of California Influenza Info for Health Professionals
- CDC Information for Health Professionals