Key Takeaways
- Washington resident dies from rare H5N5 bird flu strain, marking first human case globally
- Second US bird flu fatality this year after Louisiana H5N1 death in January
- CDC confirms over 70 human bird flu cases in 2024
- Health officials stress public risk remains low with no human-to-human transmission
A Washington state resident has died after contracting a rare H5N5 avian influenza strain previously only found in animals, marking the second human bird flu fatality in the United States this year and the first recorded human infection with this specific variant globally.
The patient, identified only as an older adult with underlying health conditions, had been hospitalized since early this month before succumbing to the virus. Washington health department officials confirmed the case on Friday.
Global Context and Confirmation
Tests conducted by the University of Washington and verified by the US Centers for Disease Control and Prevention confirmed the H5N5 avian influenza diagnosis. This represents a significant development as H5N5 had never before been documented in humans.
While the CDC has recorded more than 70 human bird flu cases this year, the World Health Organization notes over 1,000 human infections across 25 countries since 2003, though this figure includes all avian influenza strains.
Transmission Risk Assessment
Health authorities emphasize that the risk to the general public remains low. “No other people involved have tested positive for avian influenza,” officials stated. “There is no evidence of transmission of this virus between people.”
The patient maintained “a backyard flock of mixed domestic birds,” which investigators believe served as the exposure source. This highlights the continued risk of avian-to-human transmission, particularly among those with direct poultry contact.
Frequently Asked Questions
How many bird flu cases have been reported in the U.S. this year?
The CDC has documented over 70 human bird flu infections in 2024, including the Washington H5N5 case and a January H5N1 fatality in Louisiana.
What is the name of the bird flu virus in this case?
The Washington patient contracted the H5N5 avian influenza strain, marking its first appearance in humans after previously being reported only in animals.
