Facts About Tuberculosis
TB bacteria may be released into the air from a TB diseased
person when they sneeze, cough, or talk.
What is Tuberculosis?
Tuberculosis (TB) is an airborne disease caused by a bacteria called Mycobacterium tuberculosis, a germ that primarily effects the lungs but can also effect other organs. People who are infected with TB do not feel sick, do not have any symptoms and are not contagious unless and until their infection develops into active TB disease.
How Do You Get TB?
TB is spread through the air. Whenever someone with infectious TB sneezes, coughs, or talks, TB bacteria may be released into the air. Someone nearby may inhale the TB bacteria, at which point they may become infected with TB. Once inside the body, the TB bacteria can be made inactive, or it can settle in the lungs and begin to grow. The TB bacteria also can spread to other parts of the body such as the spine, brain and kidney.
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A bad cough lasting longer than two weeks Coughing up blood Chest pains Fatigue or weakness Fever Weight & appetite loss Sweating at night Chills |
Approximately, 10 percent of people infected with the TB germ will develop active TB disease at some point in their lives. The risk is greatest during the first two years after being infected. The risk is also greatest for persons who are HIV-positive or who have other clinical conditions that effect the immune system. The remaining 90 percent of those who are infected have no symptoms, other than a positive reaction to the tuberculin skin test, and will not develop active disease. They have what is known as latent TB infection. They are not infectious and cannot transmit TB to anyone because their immune systems stop the infection.
If an infected person's body is not able to make the TB germ inactive, they are said to have "active TB" or "TB disease." Those with TB disease in their throat or lungs are infectious and can easily spread the TB bacteria. However, individuals who have TB disease anywhere else cannot spread the TB bacteria and are not infectious. If you have active uncomplicated TB disease, you must complete a 6-12 month period of 3-4 TB drugs, ordered by a doctor.
- You have spent time with someone with infectious TB.
- You live or work in an environment where TB disease is common. Such environments include some hospitals, nursing homes and most homeless shelters, prisons, jails and migrant farm camps.
- You think you might have TB disease.
- You are from a country where TB disease is common. Such countries include those in Africa, Latin America, the Caribbean, Asia, and Eastern Europe.
- You have HIV infection or another condition that places you at high risk for TB disease.
- You inject drugs and/or share needles.
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Who Is At High Risk of TB?
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