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Influenza Surveillance

Influenza surveillance in Oregon is a collaborative effort between the Oregon Public Health Division’s Acute and Communicable Disease Prevention Program (ACDP) and its many partners in local health departments, public health and clinical laboratories, healthcare providers, clinics, and emergency departments.

Topics include: reportingtestingsentinel provider surveillance and surveillance data

About Influenza

Influenza, commonly known as the flu, is a contagious respiratory tract infection caused by influenza viruses. Influenza can cause mild to severe illness, and at times can lead to death. Symptoms of influenza generally include fever, cough, sore throat, muscle aches, headache, and/or fatigue.

During most influenza seasons, which typically run from November to April, between 10 percent and 20 percent of the population is infected with influenza viruses. More than 200,000 people are hospitalized with influenza each year in the U.S. Certain groups of people, including older adults, young children, pregnant women, and people with certain health conditions, are at higher risk for serious complications from influenza illness.

The best way to prevent the flu is by getting vaccinated each year.

Learn more

Magnifying glass being used to examine a colorful bar chart Influenza surveillance data
During the influenza season, the Oregon Public Health Division publishes a weekly surveillance report, Flu Bites. The latest report and archived data are available here, along with other influenza surveillance data.
Oregon ILINet logo ILINet Sentinel Provider Surveillance
Oregon's Outpatient Influenza-like Illness Surveillance Network (ILINet) is a collaborative effort between public health and Oregon healthcare providers.
Microscopic view of influenza virus Influenza Reporting in Oregon
Reporting is required in Oregon for certain cases of influenza.
Closeup of lab worker wearing protective face gear examining a specimen Influenza Testing
Influenza testing can include rapid antigen tests, virus culture and PCR. ACDP provides guidelines for specimen collection and testing.

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