PORTLAND, OR -- Flu season is officially underway in Oregon. In the first week of October, labs report 22 positive tests in the state. Of those, 18 were for Influenza A and four for Influenza B.

Six cases are in Central Oregon, which is fewer than 1% of the 667 tests conducted that week. Of the local cases, four are Influenza A and two are Influenza B. 

The Portland-metro area had 10 cases and five of those resulted in hospitalizations. Three other cases are in Southern Oregon, along with three in the Willamette Valley.

Track the state's flu season on the Oregon Health Authority's website.