Seasonal Influenza Surveillance
In Marin County, Influenza activity normally occurs during the winter months between late December and early March, usually peaking in late January or early February.
Starting in October and continuing until the end of the flu season, we produce a weekly influenza surveillance report providing information on influenza activity in the U.S., California, and Marin County.
Enhanced Avian Influenza Surveillance
There is currently no human or animal Avian Influenza H5N1 activity detected in Marin County.
However, Healthcare providers are encouraged to report immediately by telephone any case meeting the following surveillance
case definition.
Immediately report a suspect case of human Avian Influenza H5N1 by telephone at:
- During business hours: (415) 473-7805
- After hours: (415) 499-9464 (ask for the on-duty public health officer)
Other Influenza Surveillance Resources