U.S. avian flu outbreak worst in history (NASDAQ:IDXX) - Seeking Alpha

The birds infected with the virus often die, resulting in entire flocks, which can sometimes exceed a million egg-laying birds at chicken farms, being killed to avoid further transmission.

The U.S.

outbreak began in February and impacted poultry and non-poultry birds across 46 states, sending the depopulation figures above the 2015 level when 50.5M birds died.