Replacement of Influenza Reports with COVID-19 Surveillance Updates

We will be suspending our regular Influenza Surveillance reporting to offer Coronavirus Disease 2019 (COVID-19) surveillance updates, including surveillance of respiratory illnesses, such as COVID-19 and influenza-like illnesses, from Emergency Department visits and Emergency Medical Services dispatches. Respiratory illness surveillance updates are available at

Marin Flu Surveillance Data

Marin Influenza Surveillance

Marin County Department of Health and Human Services tracks influenza activity by analyzing laboratory testing data and visits to local emergency departments for influenza-like illness.  During the influenza season, we produce an influenza surveillance report that summarizes influenza activity in Marin County, California, and the United States.
We usually observe a peak in influenza activity between late December and February.

Current Marin Influenza Activity:  2019-20 Influenza Season

We will release three Influenza Surveillance Update during the 2019-20 influenza season. These reports will be released in late 2019, early 2020, and spring 2020. Additional reports may also be released as necessary.

Influenza Surveillance Update Reports: 2019-2020 Influenza Season

Email Address:

Marin Surveillance Update Archive

Other Influenza Surveillance Resources

California Department of Public Health
Centers for Disease Control and Prevention
World Health Organization