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Oregon Health Authority

Acute and Communicable Disease

2024 Measles Outbreak in Oregon

Thirty-one cases of measles were reported from three counties during June-August 2024. 
The outbreak is considered over as of September 26, 2024 (42 days after the last case onset).  Vaccination is the best preventive measure for measles.  Two doses of measles-containing-vaccine provide 97% protection against the disease. For more information, see CDC's Measles Vaccination page.

Measles data and news


Working to Keep Oregonians Healthy

Disease prevention and control is a cooperative effort involving health care providers, local and state health department personnel and members of the community. Oregon Public Health Division programs work to prevent the emergence and spread of communicable diseases. This includes collecting and analyzing disease reports, studying risk factors, protecting exposed individuals and families, developing guidelines for disease prevention and control, and planning and responding to public health emergencies involving communicable diseases.

Featured News

Paralytic Shellfish Poisoning Outbreak

On May 28, 2024, Oregon Health Authority (OHA) urged people to throw out mussels gathered from beaches between Seal Rock State Park north to the Washington border after cases of paralytic shellfish poisoning were reported to the agency. The shellfish were harvested at beaches in Lincoln, Tillamook and Clatsop counties. Please see factsheets below for additional information on paralytic shellfish poisoning.

Marine intoxication data

OHA- Marine Intoxication (Diseases A-Z)

El 28 de mayo de 2024, la Autoridad de Salud de Oregón (OHA) instó a las personas a tirar los mejillones recolectados en las playas entre el Parque Estatal Seal Rock al norte y la frontera con Washington después de que se informaran a la agencia casos de intoxicación paralizante debido a los mariscos. Los mariscos se recolectaron en las playas de Lincoln, Tillamook y Clatsop. Consulte las hojas informativas a continuación para obtener información adicional sobre el envenenamiento paralizante por mariscos.

Upcoming Events

Communicable Disease Report Summary 2022 Communicable Disease Report 

Visit Annual Surveillance Reports to view the report which is available as a PDF or in Tableau.


Annual OR Epi Conference 
April 23-25, 2025
Mark Your Calendars

OR Epi logo

The 38th Annual OR Epi conference
(OR Epi 2025) will be taking place in Sunriver.


For More Information:

You can find out about past conferences here: internet explorer iconOR Epi Conference

Hepatitis C Testing

CDC heptest Oregon has the fourth highest prevalence of hepatitis C in the U.S. and the second highest rate of hepatitis C-related mortality.

CDC now recommends one-time hepatitis C testing of all adults and all pregnant people during every pregnancy. Find out more about prevention, testing, and treatment of hepatitis C on CDC's new "Know More About Hepatitis" resource page for providers

Visit our newly designed viral hepatitis page