The California Department of Public Health has issued an advisory to direct clinicians to national recommendations on testing and treatment of influenza from the Centers for Disease Control and Prevention. A majority of cases this influenza season in California have been typed as Influenza A (H3N2). Patients with influenza who are hospitalized, severely ill, or at high risk for complications should be treated as soon as possible with a neurominidase inhibitor antiviral agent, such as zanamivir and oseltamivir. To read the advisory, go to