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Outbreak Investigation

Call your local county health department if you suspect an outbreak of disease.

Cell phone and pen resting on a pile of papersThe Oregon Health Authority, Public Health Division's Acute and Communicable Disease Prevention program works with Oregon county health departments, other states and the Center for Disease Control and Prevention (CDC) to detect, track, prevent and control the spread of infectious diseases.

Physicians are required by law to report suspected outbreaks of specified diseases, infections and conditions. In Oregon, some of the most common pathogens that causes disease outbreaks are Salmonella, Shigella, E. coli, and norovirus. Outbreaks in healthcare facilities, including hospitals, nursing homes, ambulatory surgery centers, dialysis centers, birthing centers, and community-based care (assisted living, residential care, foster homes), are reportable. For more information, see our guidelines for investigating foodborne, gastroenteritis and respiratory outbreaks.

NOTE: Guidelines for investigating healthcare-associated infections (HAI) outbreaks, including multidrug-resistant organisms (MDRO), can be found on the HAI outbreak webpage.


Outbreak Data and Reports

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Oregon communicable disease outbreak data and summaries.

Foodborne and Gastroenteritis Outbreaks

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Guidelines for investigating foodborne and gastroenteritis outbreaks

Gastroenteritis Outbreaks in Long-term Care Facilities and Hospitals

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Guidelines for investigating gastroenteritis outbreaks in long-term care facilities (LTCF) and hospitals

Respiratory Disease Outbreaks

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Guidelines for investigating respiratory disease outbreaks 

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