The coronaviruses belong to the broad viral order Nidovirales within the family, Coronaviridae, notoriously known to be infecting mammals and humans in the recent years. In general, they can be commonly distinguished by their unique morphological structures of spherical or disk-like envelopes embedded with glycoproteins (Burrell et al., 2017). In terms of its genetic composition, it has a large positive sense RNA (33.5 kb) belonging to Group VI in the Baltimore classification. Other shared similarities include highly conserved genomes, Replicase gene upstream of structural and accessory genes as well as the translation of many nonstructural mRNAs from ribosomal frameshift. These viruses are very diverse and can be further subdivided into 4 subfamilies: alpha-, beta-, delta-, and gamma-coronaviruses based on serology (Fehr et al., 2015).