The Plague Pops up in US from

time to time

Most human cases in the United States occur in two regions:

Northern New Mexico, northern Arizona, and southern Colorado

California, southern Oregon, and far western Nevada

Over 80% of United States plague cases have been the bubonic form. In recent decades, an average of seven human plague cases have been reported each year (range: 1–17 cases per year).

https://www.cdc.gov/plague/maps/index.html