California Department of Public HealthIt is particularly important for California to have a strong pandemic surveillance program as it has several ports of entry for flights and shipping from Asia. The California Influenza Surveillance Project (CISP) obtains and analyzes hospital, pharmacy and laboratory data year-round in an effort to determine the timing and impact of influenza activity and to determine how well circulating strains of the virus match those used in the current influenza vaccines. The Web site provides weekly surveillance updates during the flu season.