Bubonic plague is endemic in western America (which quite surprised me).
I was vaccinated against the plague when I was in the Army.Between 1900 and 2015, the United States had 1,036 human plague cases with an average of 9 cases per year. In 2015, 16 people in the Western United States developed plague, including 2 cases in Yosemite National Park. These US cases usually occur in rural northern New Mexico, northern Arizona, southern Colorado, California, southern Oregon, and far western NevadaI was looking at comparative diseases when COVID arrived and the widespread presence of the plague surprised me greatly, having sort of assumed it vanished centuries ago.
A nice little outbreak of bubonic plague morphing into pneumonic plague would make COVID look like the mild sniffle the conspiraloons think it is (it affects all age groups equally and is 100% fatal if not treated quickly).
At least we now know how to deal with a pandemic. Don't we . . .