Statistical Analysis on the Impact of BCG Vaccination Policy of Different Economies on Coronavirus

The novel coronavirus SARS-Cov-2 (Cov-2) results in COVID-19 infection which affects the respiratory tract of the human body, so we investigated whether the BCG vaccine offers some protection against CoV-2 infection. Herein we examine whether the national programs that use BCG vaccination to reduce tuberculosis infections might be responsible for different incident and mortality rates which is observed in Covid-19 among various countries. There is some mechanistic evidence that shows the BCG vaccination can have some protective effects against the Covid-19 virus. Through our observation, we see that countries that still follow BCG vaccination policy have a significantly lower mortality rate than those countries that have discontinued this policy or never had one.