The authors have noted that the energy released by the hydrogen bonds with the protein S of the virus SARS-CoVs on the human ACE2 (receptor for human infection) is of −50.6 kcal/mol, which represents a significant value of affinity of the bond with human ACE2, but weaker than the proteins spikes of SARS-CoV-2 with ACE2 virus (−78 kcal/mol). This evidence concerns the gene ACE2 and infection.