Classical and the emerging PEDV strains, a bat alphacoronavirus (in bold), the recombinant porcine enteric coronavirus between TGEV and PEDV (in brown), three TGEV strains and one PRCV strain were included to generate a Maximum Likelihood phylogenetic tree using General Time Reversible nucleotide substitution model and supported with a bootstrap test of 1000 replicates in MEGA 6.06 software (Tamura et al., 2013) .