Transcript for Dog Infects Humans With Plague for First Time in US
The source of that plague outbreak in rural Colorado has been traced to a dog for cases of the pneumonia that the pneumonic plague. Were found to have originated with an infected pit bull. That's according to the CDC the two year old pit bull became sick last summer. And then got his owner sick health officials told ABC news that this is the first report of a dog infecting the human with the played in the US.
This transcript has been automatically generated and may not be 100% accurate.