Nowhere do I see any explanation of how this disease spreads. It is not as if the birds go on road trips or take a plane ride. WHO travels from one farm to the next thus spreading the virus? Or is it windborne?
... The migrating wild birds that spread the virus are the dabbling ducks, which get infected as they float on water and nibble on food just under the surface. They don’t necessarily get sick but can spread the virus in their droppings — which are dispersed even further in water.
That made for a bad combination in Minnesota, which has nearly 12,000 large lakes and countless smaller lakes and ponds.
“If you have got migratory birds and they stop at different locations on open water, it is pretty easy to understand,” Shere said. “This virus can live in the water for up to 130 days.”
And once one farm was infected, lateral spread took over. That’s when the virus gets spread by other means - perhaps other wild birds carrying it on their feet, rodents carrying it on their feet, trucks carrying it on their tires, farm workers or contractors carrying it on their boots...