Just like most anywhere else in the US where HVirus is already available. Been that way for the 40+ years I’ve been in norhtern CaCaLand. Every year or so some neighbor gets it.
Don’t play around with rodent poo and you are OK.
Having “watch states” is a lie. HVirus exists everywhere. Watch states are just those who have another gov’mt program to ......... “watch”.
If this is spreading person to person after prolonged close contact, then this is the Andes type of hantavirus.
And if it is Andes, then the quarantines make sense for a number of reasons.