2.4%

Percent of Reported Flu Tests Positive This Week

<1%

Percent of Reported Flu Tests Positive Last Week

<1%

Percent of Reported Flu Tests Positive This Season (Cumulative*)

*Note: 2025-26 Official Season Start [9/28-10/4/25]

4.1%

Current Percent of Reported Flu Tests Positive This Week in Oregon

5.0%*

Percent of Reported Flu Tests Positive This Week in the U.S. [*most frequently reported influenza viruses this week were influenza A(H3N2)]

Comparison to Previous Flu Seasons [Note: Current season start date: MMWR week 40 (9/28-10/4/25)]:

The figure below shows the percent of flu tests positive each week during the current flu season and for the previous two flu seasons in Central Oregon.

Number of ER Visits for Flu-like Illness:

The figure below shows the weekly number of visits for influenza-like illness (ILI) by Crook, Deschutes, and Jefferson County residents to any emergency room across the state of Oregon.

*Note: Morbidity & Mortality Weekly Reporting (MMWR) week 40 for this season corresponds to 9/28-10/4/25

Map of Influenza-like Illness Activity in the U.S.

The map below shows influenza-like illness (ILI) by state across the U.S. This map, which is from CDC's FluView weekly report, provides an overview of which areas of the country are currently experiencing high flu-like activity.

Thank you to the local labs and clinics in Crook, Deschutes, and Jefferson Counties that contributed flu test data to this report. If your lab or clinic would like to contribute data, please reach out to flu@deschutes.org.

 To download a printable PDF version of this week's report, click here. You can also visit our Central Oregon Respiratory Reports Webpage here for more information.

[COVID19 Report]: For a PDF version of this week's COVID report, click here.

[RSV Report]: For a PDF version of this week's RSV report, click here.

This situation update was compiled by the Crook, Deschutes, and Jefferson County Health

Departments. It will be updated with state, national, and worldwide situation data and generally sent Mondays during the current flu season. If a holiday falls on a Monday, we will do our best to send this report out on the next business day.* For current Wastewater Monitoring information, please see updated OHA dashboards here. Note: In response to recent concerns arising from the emerging, highly pathogenic avian influenza A (H5N1) viruses, CDC has created a new influenza A wastewater surveillance dashboard here. Sites are categorized as having minimal to high levels of influenza A (vs. other time periods in the previous flu season at same site).

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