lation (31). α-CoVs and β-CoVs are believed to have evolved over thousands of years, restricted to bats and intermediate mammalian hosts (civet cats for SARS-CoV-1 and dromedary camels for MERS-CoV), which probably contributed to the zoonotic transmission of the new coronavirus to humans (32).
Regarding SARS-CoV-2 transmission, several works have demonstrated that coronaviruses found in pangolins (Manis javanica) an