Dog Infects Humans With Plague for First Time in US

A plague-infected dog spread the dangerous disease to four Colorado residents, according to a new report from the U.S. Centers for Disease Control and Prevention. Health officials told ABC News that this the first report of a dog infecting a human with the plague in the U.S. The dog, a 2-year-old American pit bull terrier, became sick last summer with a fever and jaw rigidity, among other symptoms. The dog's health declined so quickly that it was euthanized the following day at a local vet's office, health officials said. Four days later, the dog's owner entered the hospital with a fever and a bloody cough that became worse over the next few hours, but an initial blood culture was misidentified, according to the CDC report. As the patient's symptoms grew worse, the test was redone and he was found to have been infected with pnumonic plague, according to the CDC report. The remains of the dog were also tested and were found to be positive for the plague bacteria. "Frankly one of the biggest surprises of this outbreak is the source," said John Douglas, of Tri-County Health Department in Colorado and one of the study authors. "Primarily ... dogs don’t get sick at all or they get a minor illness," after being infected with the plague. Janine Runfola, of the Tri-County Health Department in Colorado and lead author of the report, explained that cats are more likely to infect humans with the disease than dogs because they exhibit more symptoms.  ABC