Bubonic Plague Strikes in Mongolia: Why Is It Still a Threat? (2019)

The plague is endemic in fleas on rodents and small wild animals in the US Southwest. Most people who contract it are first treated with antibiotics after presenting with the typical symptoms, and only a few days later do the test results confirm the presumed diagnosis.

The riskiest situation is exposure to plague and then quickly traveling to some other location where plague is rarely seen, and doctors at the destination do not know to look at the symptoms as possibly plague, and to tentatively treat for plague before testing confirms the diagnosis. Medical groups in New Mexico have several time done public awareness programs using the tag line: “Land of the flea, home of the plague.”

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

Don't have to go that far to find it:

https://www.nytimes.com/2017/06/27/science/plague-is-found-i...

That's a worrying bit of information... Bubonic still around in times of coronavirus.

35 years ago I dated a Continental airlines stewardess who told me as a young girl she was diagnosed with the bubonic plague and treated. They never discovered where she picked it up as a young girl in Texas.