Influenza Surveillance

Influenza Surveillance in Oregon

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.

Getting Vaccinated

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

Learn More

	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. See all data Read the current Flu Bites report (pdf) Hospital surveillance data Healthcare worker influenza vaccination
	ILINet Sentinel Provider Surveillance Oregon's Outpatient Influenza-like Illness Surveillance Network (ILINet) is a collaborative effort between public health and Oregon healthcare providers. Go to ILINet
	Influenza Reporting in Oregon Reporting is required in Oregon for certain cases of influenza. Go to reporting
	Influenza Testing Influenza testing can include rapid antigen tests, virus culture and PCR. ACDP provides guidelines for specimen collection and testing. Go to testing