<unk>  disease "TB Bacteria Are Spread Only from a Person with Active TB Disease ... In people who develop active TB of the lungs, also called pulmonary TB, the TB skin test will often be positive. In addition, they will show all the signs and symptoms of TB disease, and can pass the bacteria to others. So, if a person with TB of the lungs sneezes, coughs, talks, sings, or does anything that forces the bacteria into the air, other people nearby may breathe in TB bacteria. Statistics show that approximately one-third of people exposed to pulmonary TB become infected with the bacteria, but only one in ten of these infected people develop active TB disease during their lifetimes." However, exposure to tuberculosis is very unlikely to happen when one is exposed for a few minutes in a store or in a few minutes social contact. "It usually takes prolonged exposure to someone with active TB disease for someone to become infected. After exposure, it usually takes 8 to 10 weeks before the TB test would show if someone had become infected." "Depending on ventilation and other factors, these tiny droplets from the person who has active tuberculosis can remain suspended in the air for several hours. Should another person inhale them, he or she may become infected with TB. The probability of transmission will be related to the infectiousness of the person with TB, the environment where the exposure occurred, the duration of the exposure, and the susceptibility of the host." In fact, "it isn't easy to catch TB. You need consistent exposure to the contagious person for a long time. For that reason, you're more likely to catch TB from a relative than a stranger." If a person had<unk> , they do not have active/contagious tuberculosis. Once exposed, people very often have<unk> . To convert to active tuberculosis, the bacteria must become active. People have medical privacy or "confidentiality" and do not have to reveal their active tuberculosis case to family, friends, or co-workers; therefore, the person who gets<unk>  may never know who had the active case of tuberculosis that caused the<unk>  diagnosis for them. Only by required testing (required in some jobs)
Latent tuberculosis
Primary inoculation tuberculosis
Extensively drug-resistant tuberculosis
Totally drug-resistant tuberculosis
Tuberculosis in relation to HIV
Multidrug-resistant tuberculosis
Tuberculosis
Vietnamese tuberculosis