Influenza (Flu) Guidance for Health Care ProvidersTreatment, vaccine, reporting, lab testing, and other guidance for clinicians including guidelines for influenza vaccination or masking of health care workers. Flu Prevention Information for Long-Term Care FacilitiesWe created a variety of materials designed to assist Long-Term Care Facilities prevent influenza. Check them out! Flu Facts Learn more about the flu and how to prevent its spread. Review our Flu Prevention Flyer for tips on how to protect yourself and others from the flu [English] [Spanish] [Chinese] [Tagalog] Guidance for Specific SettingsInformation and guidance for schools, businesses, organizations, and shelters. Flu Vaccines Information for the public on flu vaccination locations Materials for PrintDownload flu materials for San Francisco.