Influenza > Surveillance Data > Outpatient ILI Surveillance

Oregon's Outpatient Influenza-like Illness (ILI) Surveillance Network

• General information
• Case definition
• Reporting and forms
• Surveillance data

General information

Oregon's Outpatient Influenza-like Illness Surveillance Network is a collaborative effort between Oregon healthcare providers, Oregon Department of Human Services, and the Centers for Disease Control and Prevention (CDC). The purpose of this surveillance system is to see when influenza activity is occurring, what influenza viruses are circulating, and where influenza activity is taking place. Through this reporting system, we are able to track Oregon's influenza activity and contribute to the national picture of influenza activity.

Increased Influenza Surveillance is Needed:

Oregon Department of Human Services is currently recruiting providers to be included in daily reporting of the total number of patient visits and the number of patient visits for influenza-like illness (ILI).

By choosing to take part in this increase surveillance measure you will elect to report all ILI visits seen at your facility to CDC and Oregon's State Public Health Department and submit any specimens for cases that meet the influenza-like-illness case definition to the Oregon State Public Health Laboratory (OSPHL) for influenza subtyping. 

If you are willing to take part in this program to increase surveillance of novel influenza A (H1N1) activity in Oregon, please contact Meredith Vandermeer by phone at 971-673-1111 or by e-mail at Meredith.Vandermeer@state.or.us or contact Ryan Asherin at 971-673-1111 or by e-mail at Ryan.M.Asherin@state.or.us.

Case definition

The case definition for ILI is syndromic and is defined as a fever (temperature >= 100.0°F or 37.8°C) plus a cough or a sore throat, in the absence of a known cause.  No confirmatory lab test is required.

Reporting and forms

Participating providers are encouraged to send specimens from patients meeting the case definition of ILI at the beginning, middle, and end of flu season. Specimens should be collected within 3 days of clinical onset and not later than 5 days after onset from patients. Specimens should be kept cool (but not frozen). Use a cold pack if they will be more than 24 hours in transit.

• Virus Culture/Isolation/Identification Information from the Oregon State Public Health Laboratory
• Virology/Immunology Test Request Form (pdf)
• Information and forms to report influenza hospitalizations and pediatric influenza deaths and avian (zoonotic) influenza.

Surveillance data

Oregon ILI activity

• 2009-2010 season
  • Statewide ILI activity (pdf)
  • Regional ILI activity (pdf)
  • Current season compared with last few seasons (pdf)

• 2008-2009 season
  • Statewide ILI activity (pdf)
  • Regional ILI activity (pdf)
  • Current season compared with last few seasons (pdf)

U.S. ILI activity

• CDC U.S. flu data from CDC