A REVIEW ON CORONA VIRUS A MENACE.

In the eve of December 2019 an epidemic outbreak started in Wuhan city of China, that was caused by novel corona virus (COVID-9), which brought trouble and turns into a dangerous and deadly public health catastrophe of world trepidation, with confirmed cases in majority of countries. A highly infectious and pathogenic COVID-19 viral contagion with the incubation period extending from two to fourteen days, which was transmitted by breathing of infected droplets. This unique coronavirus was provisionally named 2019-nCoV, now named as SARS-CoV-2 by International Committee on Taxonomy of Viruses. SARS-CoV-2 belongs to the family Coronaviridae, genus Betacoronavirus, subgenus Sarbecovirus. Virus has spread globally and resulted in thousands of deaths and having a large impact on our health systems and parsimonies. The transitional source of origin and transfer to humans is unknown, however, the speedily developing pandemic has confirmed human to human transfer. Around 43,905,621 stated cases and 526,074 deceases of COVID-2019 have been reported on July 25, 2022. The symptoms of COVID-19 are dry cough, sore throat, tiredness, breathlessness, fatigue, body aches, myalgia, vomiting, nausea, diarrhoea, in severe cases pneumonia, acute respiratory distress syndrome (ARDS) and multiple organ dysfunction resulting to death. For their diagnosis Real-time PCR (RT-PCR), is used in this samples such as sputum, oro-pharyngeal swabs, nasopharyngeal aspirate, deep tracheal aspirate, or broncho-alveolar lavage were taken. Prevention includes vaccination, home quarantine, social distancing, sanitising and bearing of face mask. This review is to make aware of the pandemic situation that is not completely over. [ABSTRACT FROM AUTHOR]