Early reports suggest that the virus can utilize human, bat, swine, and civet ACE2 [30]; notably, the group found mouse Ace2 was not permissive for 2019-nCoV infection Dissemination of virus stocks and/or de novo generation of the virus through reverse genetics systems will enable this research allowing for animal testing and subsequent completion of Koch’s postulates for the new virus. This evidence concerns the gene ACE2 and infection.