how is the disease spread across the globe?
The distribution of tuberculosis is not uniform across the globe; about 80% of the population in many African, Caribbean, south Asian, and eastern European countries test positive in tuberculin tests, while only 5–10% of the U.S. population test positive.
Tuberculosis
The distribution of tuberculosis is not uniform across the globe; about 80% of the population in many African, Caribbean, south Asian, and eastern European countries test positive in tuberculin tests, while only 5–10% of the U.S. population test positive. 
what do you mean by tuberculosis in hindi UNANSWERABLE what is this disease? It  is an infectious disease usually caused by "Mycobacterium tuberculosis" (MTB) bacteria. what are its indications? Chronic cough with blood-containing mucus, fever, night sweats, and weight loss. does it have any cure? Treatment of TB uses antibiotics to kill the bacteria. is it contagious? Yes, when people with active pulmonary TB cough, sneeze, speak, sing, or spit, they expel infectious aerosol droplets 0.5 to 5.0 µm in diameter and each one of these droplets may transmit the disease. has a booster available for it? The only available vaccine is Bacillus Calmette-Guérin (BCG) and intradermal MVA85 Vaccine in addition to the BCG is not effective in preventing it. who invented the first booster mentioned above? UNANSWERABLE
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Tuberculosis [SEP] Geographical epidemiology
The distribution of tuberculosis is not uniform across the globe; about 80% of the population in many African, Caribbean, south Asian, and eastern European countries test positive in tuberculin tests, while only 5–10% of the U.S. population test positive. Tuberculosis is more common in developing countries; about 80% of the population in many Asian and African countries test positive in tuberculin tests, while only 5–10% of the US population test positive. Hopes of totally controlling the disease have been dramatically dampened because of a number of factors, including the difficulty of developing an effective vaccine, the expensive and time-consuming diagnostic process, the necessity of many months of treatment, the increase in HIV-associated tuberculosis, and the emergence of drug-resistant cases in the 1980s.