The Centers for Disease Control and Prevention has launched a multistate public health investigation after at least 12 people were exposed to a dog, imported from Azerbaijan by a rescue group, that tested positive for a rabies variant. The dog was among a group of 33 canines and one cat that arrived at Chicago O’Hare International Airport on June 10. None of the other animals have tested positive, but all are considered to have been exposed... ...According to testing by the CDC, the dog was infected with rabies before it arrived in the United States. Other animals in the shipment...