The recent live bird market cases represent the second and third known cases of avian influenza in Philadelphia. In January, an infected wild bird was identified in West Philadelphia ’s Carroll Park section, and health officials notified the public because wild birds presented a greater risk for exposure.

Bird flu cases are rising rapidly in the U.S. and around the world. A new study traces how the disease spread over the last two decades from Asia to Europe, Africa and the Americas. New bird species,

This story has been updated with information from a Wednesday social media post from the GFP and interview with South Dakota state veterinarian Dr. Beth Thompson. SIOUX FALLS, S.D. (KELO) —