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healthcare-Associated Infections (HAI) program​

Outbreak Investigation & Response

The CDPH HAI Program has assembled a list of resources to assist LHDs and healthcare facilities (HCF) conducting an HAI Investigation. These resources have been developed by the Centers for Diseases Control and Prevention (CDC), the California Department of Public Health’s  Healthcare-Associated Infections (CDPH HAI) Program, national professional societies (e.g., the Society for Healthcare Epidemiology of America (SHEA), and the Council for Outbreak Response: Healthcare-Associated Infections and Antimicrobial-Resistant (AR) Pathogens (CORHA).  

These resources can be used by health departments and healthcare facilities working to build, standardize or improve capacities and practices related to HAI/AR outbreak detection, reporting, investigation, and control and prevention activities. The CDPH HAI Program is available to provide technical assistance and consult on HAI infections and outbreaks.


Public health authority

General approach to HAI investigations: Sentinel Cases, Clusters, Outbreaks, Infection Control Breaches

CDPH HAI Program Quicksheets and Guidance

Healthcare-Associated Pathogens, Clusters, and Outbreaks

CDPH AR pathogens

Acute Viral Respiratory Outbreaks (influenza, SARS CoV-2, RSV)

Acute Gastrointestinal Outbreaks (norovirus)


Invasive Group A Streptococcal Disease (iGAS) Post-Partum, Post-Surgical, and in Long-Term Care

Water-Associated Pathogens in Healthcare (Legionella, Pseudomonas, Non-Tuberculous Mycobacterium (NTM), and others)

Environmental Fungi in Healthcare Settings

Occupational Health Resources

Other HAI Investigation Resources

Other Communicable Diseases in Healthcare Settings



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