First Presumed Human Infections of Avian Flu Under Investigation in Washington State

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(Map: beautifulwashington.com)

Four agricultural workers tested presumptively positive for avian influenza after working with infected poultry at a commercial egg farm in Franklin County. The individuals experienced mild symptoms and have been provided with antiviral medication. Testing of additional individuals on the farm is currently pending and the number of cases under investigation may change.


(Image courtesy: hightoppoultry.com)

These are the first presumed human cases of H5 virus under investigation in Washington state. The cases took place at a farm that was the site of an avian influenza outbreak in chickens. About 800,000 birds were euthanized after test results by the Washington State Department of Agriculture on 15 Oct showed that they were infected with avian influenza.

Any employees or contractors who may have worked on a poultry farm in Benton or Franklin counties since 7 Oct should contact BFHD at 509-460-4550 if they have symptoms such as red eyes or respiratory infections.

Washington is the sixth state to identify a human infection of H5N1. H5N1 highly pathogenic avian influenza (HPAI) has caused ongoing multistate outbreaks in poultry, dairy cattle, and wildlife.

Avian influenza is a disease caused by avian influenza Type A viruses that naturally occur in wild aquatic birds throughout the world. H5N1 viruses can also infect other species of birds, and occasionally mammals, and can cause significant mortality in poultry species, such as chickens, turkeys, pheasants, quail, ducks, geese, or guinea fowl.

On rare occasions, avian influenza viruses infect people and make them sick. Most instances of people becoming infected with avian influenza have happened after prolonged, close contact with animals infected with avian influenza or environments contaminated with avian influenza.

The CDC currently considers the risk to the general public from this H5N1 avian influenza to be low; however, people with job-related or recreational exposures to infected birds, cattle, or other potentially impacted domestic or wild animals are at higher risk and should take precautions, including wearing personal protective equipment.

DOH reminds the community to never handle or allow pets near dead birds. For more information on safety precautions, visit https://doh.wa.gov/avian-influenza.

Sources:

https://doh.wa.gov/newsroom/first-presumed-human-infections-avian-influenza-under-investigation-washington-state

https://www.cdc.gov/bird-flu/index.html