I’d be a lot more worried about being exposed to Hantavirus than the plague. Hantavirus is a hemorrhagic disease, like Ebola, carried by some mice.
I knew a couple who had gone camping in the Four Corners region back in the 1990s. When they came back to SoCal the wife complained of feeling like she was coming down with the flu. After a day or so of feeling really bad she went to the doctor. But it wasn’t the flu, it was Hanta, and it killed her despite her being young and very physically fit.
I just read where a few people this year in the Seattle area have died of Hantavirus - one gal recovered in the town where I live. Scary stuff.