Colorado Sees First Human Plague Case Since 2015: Health Officials

Reported cases of human plague in the United States, 1970 - 2017. Image: Centers for Disease Control and Prevention

Authorities in Colorado said this week that the first human plague case has been discovered in the state since 2015.

The infected resident was discovered in the southwestern portion of the state earlier this summer, according to the Colorado Department of Public Health and Environment. It added that he had contact with infected squirrels.