Table 1. Organization of coronavirus (CoV) species.

Organization of CoV species (adapted from Jimenez-Guardeño et al) 2
Group	Species
α-CoVs	Transmissible gastroenteritis coronavirus (TGEV) Canine coronavirus (CCoV) Porcine respiratory coronavirus (PRCoV) Feline coronavirus (FeCoV) Porcine epidemic diarrhea coronavirus (PEDV) Human coronavirus 229E (HCoV-229E) Human coronavirus NL63 (HCoV-NL63)
β-CoVs	Bat coronavirus (BCoV) Porcine hemagglutinating encephalomyelitis virus (HEV) Murine hepatitis virus (MHV) Human coronavirus 4408 (HCoV-4408) Human coronavirus OC43 (HCoV-OC43) Human coronavirus HKU1 (HCoV-HKU1) Severe acute respiratory syndrome coronavirus (SARS-CoV) Middle Eastern respiratory syndrome coronavirus (MERS-CoV)
γ-CoVs	Avian infectious bronchitis virus (IBV) Turkey coronavirus (TCoV)