According to studies performed by the USDA Southeastern Poultry Research Laboratory in Athens, Georgia, the US H5N2 HPAI virus from 2015 had a median bird infectious dose that was 1,000 times higher than other H
According to studies performed by the USDA Southeastern Poultry Research Laboratory in Athens, Georgia, the US H5N2 HPAI virus from 2015 had a median bird infectious dose that was 1,000 times higher than other HPAI viruses to date. As a result, carriers which would be able to ensure exposure to a large amount of virus were speculated to have played a role in virus spread.
Because 2015 HPAI sites were geographically separated, contaminated feed was suggested as a potential source of Avian Influenza Virus (AIV). The reason for this was that fe