The pandemic out break of noval corona virus disease (covid19) was initially noticed in a seafood market in wuhan city in china in mid December, 2019, has spreader to 215 countries world wide. 2020 january 7th and was temporally named 2019 n- co.v Corona virus belongs to a large family of virus that causes illness ranging from the common cold to more severe disease, A noval corona virus is a new strain that has not been previously identified in humans on January 30th 2020 declared the noval corona virus out break of public health emergency of international concern (PHEIC). At that time there was 98 cases and no death in 18 countries out side china. The official name covid-19 and SARS –COV2 was issued by the WHO on 11th February 2020 Viruses are named based on their genetic structure to facilitate the development of diagnostic test, Vaccine and medium. Virologist and the wider scientific committee do this work, so virus is are named by the international committee on taxonomy of viruses. A recent review of the survival of human corona virus on surface found large variability ranging from 2 hours to 9 days. The survival time depends on number of factors, including the type of surface, temperature, relative humidity and specific strain of viruses. March 11th 2020, the rapid increase in the number of cases out side china. 118000 cases had been reported in 114 countries and 4291 deaths had been reported. Middle of the march 2020 corona out break could be characterized by “Pandemic” reporting over 40108 globally confirmed cases. As of 28th April 2020, 63% of global mortality from the virus. The impact of the dieses on the world has been staggering both from public health and economic perspective. we evaluated whether prior or active corona virus infection influenced hematological, Biochemical and Clinical parameters of the such patients. But active corona fever resulted in higher hospitalization rate. Our data support the nation that SARS- COV-2 and co morbidity weather affects an important percentage of covid 19 pateints and leads to worse parameters, requiring greater attention from health authorities.