Bats carry a large number of viruses, which will cause fatal danger to humans and other animals, but bats themselves seem not to be affected by these viruses  Why? Scientists believe that this may be related to the fact that bats are the only mammal that can fly  During the evolution of bats adapting to flight for hundreds of millions of years, many of their systems have changed, including defense and immune systems
As an ancient creature, bats have evolved super genes that can defend against various viruses
 Generally speaking, the immune response of humans and other animals should help the body resist viruses, but excessive immune response to a virus may lead to serious diseases, The immune system of bats can achieve a balance in the process of symbiosis with the virus