They got rid of Smallpox and Polio didn't they? Dreadful illnesses. Smallpox in particular is horrific!!
Prior to the BCG plan, there used to be a fair bit of TB about, my uncle died from it!
There's no doubt Tuberculosis vaccinations worked and reduced its incidence. Although TB is on the rise again, an import we could well do without, along with more Hepatitis and AIDS.