We’ve had 84 in New Mexico recently. I believe all but a few died.
I wasn’t joking when I said the CDC burned down the houses.
It is nasty stuff. Here, they said it was from breathing the crystallized urine of mice carrying the disease (likely in forced-air heating ducts). Burning the house makes sense, if the infection was vectored by mice—there is no way to remove the urine from the building with any certainty.