In other developments, the USDA confirmed more poultry outbreaks in 5 states, including commercial farms in California and Utah.
Also, California health officials report another illness in a dairy farm worker, pushing the national total this year to 55.
Brisk activity continues in California at dairy and poultry farms, as poultry outbreaks expand to Midwestern states.
The USDA also confirmed several more detections in wild birds, as Pennsylvania's ag department ordered bulk milk testing.
Health officials are investigating the exposure source and monitoring staff and families from the child's daycare.
Sequencing from 3 of Washington's cases showed a change linked to slightly reduced oseltamivir susceptibility, but it isn't expected to impact the drug's clinical benefit.
In other animal developments, outbreaks were detected on several more California poultry and dairy farms, and Arizona reported its first in commercial poultry.
The patient from Oregon had been exposed to sick poultry during an outbreak that occurred toward the end of October.
In other developments, Alveo Technologies announced an agreement with the CDC to develop a rapid multiplex test for point-of-need use.
Sequencing shows that the virus is similar to the type infecting British Columbia poultry, as H5N1 strikes more large poultry farms in the western US.
