https://nypost.com/2020/04/14/coronavirus-death-rates-lower-in-countries-using-tb-vaccine/?fbclid=IwAR0yPaTfeaXTzec0GeO6A27viO1pSlqH3JaIi2igQzQKkSw5xYBc7tOO6E8

Coronavirus death rates are nearly six times lower in countries that use a nearly century-old tuberculosis vaccine, a new study found. The study, conducted by researchers at the Johns Hopkins Bloomberg School of Public Health, found that the COVID-19 mortality rate among countries that use the Bacillus Calmette-Guérin (BCG) vaccination was 5.8 times lower than in those that do not.