https://www.selleckchem.com/screening/inhibitor-library.html It is necessary to have knowledge of the virus and availability of the best possible personal protection equipment, develop skills for handling equipment, and develop non-technical skills during all intensive care process; this can be achieved through structured training. The probability of transmission depends on the characteristics of the pathogen, the availability of quality personal protective equipment, and the human factors associated with the performance of health workers. It is necessary to have knowledge of the virus and availability of the best possible personal protection equipment, develop skills for handling equipment, and develop non-technical skills during all intensive care process; this can be achieved through structured training. To investigate the association between parameters indicating immunity from BCG at country level (presence of BCG vaccination policy, BCG coverage, age-specific incidence of tuberculosis (TB)) and the morbidity and mortality of COVID-19. Country-specific data for COVID-19 cases and deaths, demographic details, BCG coverage and policy, age-specific TB incidence and income level were obtained. The crude COVID-19 cases and deaths per 100,000 population were calculated and assessed against the parameters indicating immunity from BCG using linear regression analysis. Univariate analysis identified higher income level of a country to be significantly associated with COVID-19 cases ( < 0.0001) and deaths ( < 0.0001) but not with its case fatality rate. The association between COVID-19 and TB was strongest for TB incidence in patients > 65-years (Cases (r = - 0.785, = 0.0001)) and deaths (r = - 0.647, = 0.0001).Multivariate analysis identified the higher income level of a country and not having a universal BCG vaccination policy to affect the COVID-19 cases. The deaths were inversely affected by the presence of BCG vaccination policy and coverage; and positively by the TB