Health officials in Colorado say a man has contracted the deadliest form of the plague that exists. 

Though details are scarce at the moment, Bloomberg mentions that officials believe the unidentified man was exposed to the pneumonic plague near Adams County, Colo. According to a statement from the Colorado Department of Public Health and Environment, the body of a dog that died unexpectedly tested positive for it:

The Colorado Department of Public Health and Environment laboratory yesterday identified pneumonic plague in a Colorado resident. Investigation revealed the family dog had recently died unexpectedly. The carcass was recovered and tested at the Colorado State University Veterinarian Diagnostic Laboratory, where tests were positive for plague.

Tri-County Health Department officials and the Colorado Department of Public Health and Environment are working together to investigate the source of exposure and to identify those who may have been exposed through close contact with the individual. Any individuals exposed will be recommended for antibiotic treatment.

Colorado Department of Public Health and Environment Spokeswoman Jennifer House said the man was hospitalized and treated, but declined to disclose any additional information. She added that this is the first case of the plague reported in the state since 2004.

[via Bloomberg]

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