You don't know what you are talking about so please stop with the misinformation.
Feline coronavirus (FCoV) is a positive-stranded RNA virus that is infectious to cats worldwide.[2] This virus is part of the species Alphacoronavirus 1 of the genus Alphacoronavirus belonging to the virus family Coronaviridae.[3] Alphacoronavirus 1 also includes the canine coronavirus (CCoV) and the porcine transmissible gastroenteritis coronavirus (TGEV).[2] It has two different forms; the FECV (feline enteric coronavirus) that infects the intestines and the FIPV (feline infectious peritonitis virus) that causes the disease feline infectious peritonitis (FIP).
Plenty of research and articles online.
https://en.wikipedia.org/wiki/Feline_coronavirus