Within 24 to 48 hours of the first detection of the virus, state and federal animal health officials work with farms to cull infected flocks to reduce the risk of transmission. That’s followed by extensive disinfection and months of surveillance and testing to make sure the virus isn’t still lurking somewhere on-site.

Aldi, Trader Joe's and Pick 'n Save are among the national and local chains currently limiting egg purchases. And, on top of the shortages, Wisconsin grocers are also managing rapidly increasing egg prices as a result of the avian flu, inflation and seasonal demand.