The Pueblo City-County Health Department announced Wednesday that an adult had died from the plague, a disease that has a long and sordid history, albeit not one typically associated with modern times or developed countries like the United States.
The health department didn't detail who died, beyond that it was an adult.
The agency said in a press release that "the individual may have contracted the disease from fleas on a dead rodent or animal." It's the first such case of someone in Pueblo County contracting the plague since 2004.
"This highlights the importance to protect yourself and your pets from the exposure of fleas that carry plague," said Sylvia Proud, the city-county public health director.
A dead prairie dog in the western part of Pueblo County is the only animal, thus far, confirmed to have the plague in the immediate area.
The county isn't the only part of the United States recently afflicted with the plague.
California's Department of Public Health announced Thursday that a child who camped in Yosemite National Park and visited Stanislaus National Forest in mid-July was hospitalized after coming down with the plague. That child is recovering, and no one else in the camping party reported symptoms.
This year's other plague case was in Colorado's Larimer County.
A teenager there died earlier in 2015 from the plague. That was the year's first such case in Colorado, after eight in 2014 -- which was a major jump from the one instance reported in the state over the previous seven years -- according to the state's Department of Public Health and Environment.
None of the 17 cases reported between 2005 and 2015 were in Pueblo County.
The Centers for Disease Control and Prevention
found, in a report released April 30, that a pit bull was at the heart of a plague outbreak that sickened four people last year.
That report was especially significant in that it suggested that there might have been a human-to-human transmission. That hasn't happened in the United States since 1924.
The dog-to-human transmission was unexpected, according to Colorado's Tri-County Health Department. The team that investigated the case said they could only find one other case of dog-to-human transmission in the medical literature. That was a 2009 case in China.
The CDC says about seven people get the plague -- over 80% of which have been in the bubonic form
-- every year in the United States. While it can be life-threatening, with modern medicine such as antibiotics and antimicrobials it is usually not deadly, as it was in the Middle Ages when millions died.