Abstract

Introduction The Current Respiratory tract disease Pandemic COVID-19 is a new viral pathogen strain of the Coronavirus family called as the Severe Acute Respiratory Syndrome Coronavirus-2 SARSCoV- 2 The main complication of the disease includes Severe Pneumonia and Acute Respiratory Distress Syndrome ARDS The Bacillus Calmette Guerin BCG is a live attenuated vaccine developed against Tuberculosis TB at the beginning of the 20th century at the Institute Pasteur in Paris BCG vaccination in general is reported to decrease human susceptibility to respiratory tract infections O Neill Netea 2020 and also reduces infant mortality This protective effect of BCG appears to be common against any unrelated infectious agents and respiratory tract infections Thus we aimed to study on whether BCG vaccine induces immunity and protects against the new respiratory infectious disease COVID-19