COVID 19 is a novel coronavirus that was reported by the world health organization in late December 2019. As an unexplained respiratory disease epidemic, which is similar to respiratory syndrome coronavirus SARS CoV, it rapidly spread all over the world. ...The meta analysis and forest plots of two viral world infections showed that the incidence rate of COVID 19 infection is more than SARS infections, while recovery and mortality event rates of SARS CoV are more than COVID 19 infection. ...