REVEW RESEARCH ARTICLE CORONA VIRUS, COVID-19, PANDEMIC DISEASE

The disease caused by corona virus is come under the category of sudden/acute infectious disease which is caused by SARS-CoV-2. At time WHO stated that disease of COVID-19 is a worldwide contagious illness. According to WHO, this contagious disease is a 3rd acute contagious disease which is caused by infection due to corona virus in the current century after anticipated SARS. Till now the exact mechanism of COVID-19, how it produces its ill effects to the host body is still not clear. This disease of COVID-19 shows mild or negligible symptoms in most of the population, but usually it progresses with people of old aged groups or patient having low immunity. In the cases it started with dyspnea, progress towards pneumonia and might lead to multiple organ failure. Now a days most of the people or patients show no symptoms or otherwise are asymptomatic. Final diagnosis of the virus is confirmed by presence of virus in the secretions of respiratory tract with the help of molecular tests. First case of this pandemic was from city of wuhan, from china on 7th January, 2020.