Health officials in Washington state say they have identified the nation's first human case of bird flu since February, pending confirmatory testing .

A Grays Harbor County, Washington, resident preliminarily tested positive for the infection, the Washington State Department of Health said Thursday. Health officials say they're still investigating the source of the infection, including contact with wild or domestic birds.

The patient is an older adult with underlying health conditions, state health officials said. They developed a high fever, confusion, and respiratory distress and were hospitalized in early November. The person's treatment is ongoing.

There have been 26 human infections of bird flu confirmed so far this year around the world through Aug. 4, according to the U.S. Cen

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