Influenza (Flu) Guidance for Health Care ProvidersTreatment, vaccine, reporting, lab testing, and other guidance for clinicians. Flu Prevention Information for Long-Term Care FacilitiesCheck out our new webpage created to assist LTCFs prevent influenza. Flu FactsLearn more about the flu and how to prevent its spread. Guidance for Specific SettingsInformation and guidance for schools, businesses, organizations, and shelters. Flu Vaccines Where to get a flu vaccine Flu vaccine information for medical providers Materials for PrintDownload flu materials for San Francisco.