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Hanan E Alyahyawi,1 Raed A Alharbi,1 Saleha Keder Alatawi,2 Waled AM Ahmed,3 Shaia SR Almalki1 1Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Al Bahah, Saudi Arabia; 2Department of Optometry, Faculty of Applied Medical Sciences, Albaha University, Al Bahah, Saudi Arabia; 3Department of Nursing, Faculty of Applied Medical Sciences, Albaha University, Al Bahah, Saudi ArabiaCorrespondence: Shaia SR Almalki, Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Al Bahah, Saudi Arabia, Tel +966- 556556714, Email shalmalki@bu.edu.saAbstract: The global pandemic of coronavirus disease 2019 (COVID 19) is reported to have started in Wuhan City, Hebei Province, China. It has spread rapidly all over the world, including Saudi Arabia, having a severe health emergency. This new virus was named as the 2019 novel coronavirus (2019-nCoV), and now severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) based on previous practice and phylogenetic and taxonomic investigations. SARS-CoV-2 belongs to the family of Coronaviridae, Betacoronavirus, Sarbecovirus subgenus, genome β. Throughout the COVID 19 pandemic, several strains of SARS-CoV-2 have been recognized around the world. The SARS-CoV-2 variants have caused significant morbidity and mortality worldwide and in Saudi Arabia as well. The rate at which COVID-19 spread across borders and affected countries has highlighted the significance of health care systems to nations and global operations. This review focuses on the origin, epidemiology, pathophysiology, transmission, and the impact of this disease, while highlighting the knowledge about SARS-CoV-2 variants.Keywords: prevalence, incidence, COVID-19, coronavirus, SARS-CoV-2, review |
