One tiny mutation may explain how bat viruses become human threats

Researchers have identified a single genetic mutation that dramatically changes how coronaviruses behave across species, including the jump from bats to humans. This tiny change, a single amino-acid difference, can determine whether the virus is effectively fought by the immune system or if it suppresses it. Understanding this shift is crucial for predicting and preventing future zoonotic diseases, as it sheds light on the mechanisms that enable viruses to become more harmful when they cross species boundaries. This insight could lead to better strategies for monitoring and controlling the spread of such viruses.