At least three cases of the plague have been reported in the United States, with infections confirmed in New Mexico, California, and Arizona. Infectious disease specialists noted that a handful of plague cases are diagnosed each year. The bacterium responsible, Yersinia pestis, is transmitted by fleas and cycles naturally among rodents. At least three cases of the plague have been reported in the United States, with infections confirmed in New Mexico, California, and Arizona. (WKRC, file, Provided) "If a person is around these rodents where the fleas are, the fleas can jump off the rodents, get on the person, and...