Scientists believe bats first transmitted SARS-CoV-2 to humans in December 2019, and while the virus has since evolved into several variants such as delta and omicron, a new study indicates the virus is still highly transmissible between mammals. Researchers at Rochester Institute of Technology (RIT) developed computer simulations that show the coronaviruses use their spike proteins to attach themselves to the host cells in both bats and humans in much the same way.