World Tuberculosis Day 2022: Theme, History and significance Approximately one-third of the world's population has latent tuberculosis, which refers to persons who have been infected with TB bacteria but have not yet developed symptoms and are unable to transmit the disease
that is weird huh I wonder how that is explained exactly .. ..I heard about this fifteen to twenty years ago I did not know that the ratio is 1/3 though I just learned that today
