The Centers for Disease Control and Prevention maintains a webpage titled, “Flu View” which includes weekly status updates of number of flu cases per state. http://www.cdc.gov/flu/weekly/
For information on the flu virus in California visit the California Department of Health’s website here: http://www.cdph.ca.gov/HealthInfo/discond/Pages/Influenza%28Flu%29.aspx
Be safe out there and WASH YOUR HANDS.