To back this up, here's one perspective: > TB continues to be one of the major public health threats. BCG is the only available vaccine against TB and confers

To back this up, here's one perspective: > TB continues to be one of the major public health threats. BCG is the only available vaccine against TB and confers significant protection against the childhood disease. However, the protective efficacy of BCG against adult pulmonary TB, which represents a larger burden of disease, is highly variable. https://pmc.ncbi.nlm.nih.gov/articles/PMC8712472/#abstract1 https://pmc.ncbi.nlm.nih.gov/articles/PMC8712472/#abstract1