Migratory waterfowl are blamed for avian flu outbreaks in Texas cows and poultry, leading to culling of millions of birds. The virus has also affected dairy herds in multiple states, possibly transmitted by wild birds. The risk to humans is low.
Key Points
Migratory waterfowl spreading avian flu to cows and poultry in Texas
Culling of 1.6 million laying hens due to positive test at a Texas egg farm
Similar strains of the virus found in multiple states, possibly introduced by wild birds
Pros
Increased surveillance and inspections of U.S. livestock imports by Mexico
Early detection and response to the outbreak
Cons
Significant economic losses for the poultry and dairy industry
Uncertainty about transmission between cattle and the source of infection