Coronaviruses are a group of enveloped viruses with nonsegmented, single-stranded and positive-sense RNA genomes., severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coronavirus (MERS-CoV) are zoonotic and highly pathogenic coronaviruses that have resulted in regional and global outbreaks Coronaviruses possess a distinctive morphology, the name being derived from the outer fringe, or ―corona‖ of the embedded envelope protein