Counties reporting human plague cases* County | Number of cases | Adams | 4 | Archuleta | 1 | Boulder | 1 | Denver | 3 | Grand | 1 | La Plata | 9 | Larimer | 1 | Mesa | 1 | Pueblo | 1 | Total | 22 |
*County of residence, not necessarily where exposure occurred | Human plague cases reported each year Year | Number of cases | 2005 | 3 | 2006 | 4 | 2007 | 0 | 2008 | 0 | 2009 | 0 | 2010 | 0 | 2011 | 0 | 2012 | 1 | 2013 | 0 | 2014 | 8 | 2015 | 4 | 2016 | 0 | 2017 | 0 | 2018 | 0 | 2019 | 0 | 2020 | 2 | Total | 22 |
| Human plague cases by gender Gender | Number of cases | Female | 13 (59%) | Male | 9 (41%) | Total | 22 |
Human plague cases by age
Age in years | Number of cases | 0-14 | 3 | 15-24 | 2 | 25-34 | 4 | 35-44 | 4 | 45-54 | 3 | 55-64 | 4 | 65-74 | 1 | ≥75 | 1 | Total | 22 |
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