Highly Pathogenic Avian Influenza (HPAI), or bird flu, is an extremely contagious viral illness that affects both wild birds and livestock, such as chicken and turkeys. As HPAI cases continue to rise in the U.S., University of Minnesota School of Public Health Professor Jeff Bender shares his expertise on the disease.
Q: Where does highly pathogenic avian influenza (HPAI) or “bird flu" come from? Do wild birds infect domestic flocks?
Prof. Bender: Highly pathogenic avian influenza viruses are found in aquatic birds. These aquatic birds often serve as reservoirs for the virus and do not become ill, but are sources of infection for domestic poultry, such as chickens and turkeys. This virus is called “highly” pathogenic (Pathogenic refers to an ability to cause disease) because of how easily it transmits to domestic birds, such as chickens and turkeys.
Q: Can HPAI infect humans? And if so, on what scale?
Prof. Bender: Rarely. This often depends on the virus strain. At present, this particular strain has not caused human illness in the U.S., but state health departments are working with industry and agricultural officials to monitor workers and producers for any potential infections.
Q: In 2015, producers had to cull (destroy) millions of birds to stop the spread of HPAI. If they have to do that with the current outbreak, how will that affect poultry prices and availability for consumers? What could be the economic effect of HPAI on poultry producers?
Prof. Bender: In 2015, there was an impact on the availability of eggs, chicken, and turkey products. That outbreak had, at least, a three- to six-month effect on supplies and income for producers. Controlling the HPAI virus often involves culling infected poultry, and the 2015 outbreak had significant impacts on producers, but also on those workers and support staff who process poultry and eggs.