Are you discounting rural Americans as not being part of the global poor then? Or not real “westerners”? There have been roughly 30 cases a year in western states since the disease was first found here in the 90s
30 in a population of 350mill is a ~1:10000000 chance of getting it. 900 or so cases in 3 decades. A cursory google search shows it's killed about 300 people since 1990, so roughly 10 a year, the equivalent of venomous snake-related deaths more or less, and that's because we have quick access to anti-venoms for most of the population otherwise the casualties would be far higher.
Treating that low number like a low number is not "discounting" rural US citizens. The US - all populations included - does not really live with the hantavirus in any real sense. It's incredibly rare. 10x as many people are struck by lightening annually in the US.
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Infection by hantavirus is correlated with where you live, not socioeconomic status. It is endemic to parts of the high desert in the American Southwest and a background risk you accept by living there.
For example, Gene Hackman's wife, Betsy Arakawa, famously died from hantavirus. They lived in a wealthy gated community in Santa Fe.