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.
Tuberculosis
people with active pulmonary TB cough, sneeze, speak, sing, or spit, they expel infectious aerosol droplets 0.5 to 5.0 µm in diameter. A single sneeze can release up to 40,000 droplets. Each one of these droplets may transmit the disease, since the infectious dose of tuberculosis is very small (the inhalation of fewer than 10 bacteria may cause an infection).
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.
wiki:19666023
Tuberculosis [SEP] Transmission
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. A single sneeze can release up to 40,000 droplets. Each one of these droplets may transmit the disease, since the infectious dose of tuberculosis is very small (the inhalation of fewer than 10 bacteria may cause an infection).