Delmarva has dealt with bird flu in the past. Those were different strains. In the words of the Maryland Department of Agriculture, this strain could be catastrophic. It is lethal. 95 percent lethal to poultry. It poses no threat to humans, but if AI is found on a farm on Delmarva, it could cause serious problems, so bio-security is tight. Before visiting Maple Breeze Farms near Preston, we had to sign in and suit up.