Maryland's second case of the H5N1 bird flu has been detected at a poultry farm in Queen Anne's County, according to the Maryland Department of Agriculture.

Maryland may be known for crabs, but it is also a major producer of broiler chickens and dairy products. So a recent spate of bird flu cases have public health officials on alert and watching for the impact on these multibillion dollar industries, as well as the health of the animals — and people.

Bird flu outbreaks have been detected at three poultry operations in Maryland and Delaware, impacting more than 500,000 chickens and leading to heightened alert among officials in the Washington region.