United States Department of Agriculture (USDA) Mandates Influenza Testing for Interstate Shipment of Dairy Cattle Lancaster Farming Staff, April 24, 2024 USDA will require dairy cattle to receive a negative test for influenza A before interstate shipment. The move was announced Wednesday and will go into effect April 29. The testing rule applies to lactating read more Article from Lancaster Farming: United States Department of Agriculture Mandates Influenza Testing for Interstate Shipment of Dairy Cattle