How does hantavirus actually spread if the rodents themselves don't get sick?
I was reading about how hantavirus pulmonary syndrome has such a high mortality rate in humans (around 38%), which is terrifying. But what blows my mind is that the rodents carrying it, like deer mice, don't seem to show any symptoms at all. How does their immune system tolerate a virus that is so lethal to us, and what exactly happens when it crosses over into humans?