An 8-year-old hooded capuchin monkey at the Denver Zoo was a victim of the bubonic- plague outbreak moving through the City Park neighborhood near the zoo.
Twenty-three animals - mostly tree squirrels - have tested positive for the disease out of 144 examined, said John Pape, epidemiologist with the Colorado Department of Public Health and Environment.
Twenty animals were found in the City Park area. One specimen each has come from Jefferson County, Arapahoe County and near the old Lowry Air Force Base on the border of Denver and Aurora.
"This disease has the potential to move to other animals," Pape said. "We consider that risk to be low, but it still happens."