ABSTRACT
COVID-19 pandemic turned into the proven existence-threatening virus in-line with World Health Organization (WHO) has declared a public health emergency of International Concerned and our healthcare system found a challenge to save human civilization. This evaluation gives a brief idea of COVID-19 epidemiology, pathophysiology, treatment, and prevention of COVID-19. Exclusive drugs like Dexamethasone and Remdesivir were found effective to treat the virus was covered in this review article. Pathophysiology of virus in the body of diabetes and cancer patients, there mechanism of action and risk involved in that patients were studied. This review turned to conduct on data found in science direct, various information sources on the internet and different review articles were studied. The major objective is to provide a brief overview of this disease, study infectious virus effect on human beings proves to be an existence-threat to the world population and brief overview of COVID-19 was covered in this review article.