Genomic evolution of the human and animal coronavirus diseases

Different coronaviruses have emerged due to their ability to infect, mutate and recombine multiple species and cell types, suggesting that these viruses will carry on to evolve and origin both veterinary and human diseases. So far, more than fifteen coronavirus-related diseases have been described in animals and seven in humans. Of which recently, a novel human betacoronavirus designated by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), an emerging zoonotic coronavirus is the causative agent of the coronavirus disease 2019. This virus emerged in China and spread rapidly worldwide. At the end of January 2020, the WHO declared the pandemic as a public health emergency of international concern. In this pandemic, the SARS-CoV-2 virus has infected more than 198 million people, with 4.2 million deaths worldwide (as of 2 August 2021). In the past two decades, this is the third betacoronavirus that has crossed the interspecies barrier from animals to infect humans and other animal species. The diseases caused mainly severe respiratory infections. The aim of this review is to summarize and provide an overview of the coronaviruses that can affect animals and humans and the diseases that ensue, as well as, its genomic relationship.