If https://healthcareinamerica.us/what-makes-bats-the-perfect-hosts-for-so-many-viruses-3274c019bb4d https://healthcareinamerica.us/what-makes-bats-the-perfect-

If https://healthcareinamerica.us/what-makes-bats-the-perfect-hosts-for-so-many-viruses-3274c019bb4d https://healthcareinamerica.us/what-makes-bats-the-perfect-h... is accurate: * variable body temperature (they heat when they fly) * many species roost very closely in large numbers * weird immune system traits (they have very fast metabolisms, so they present an odd environment for pathogens)