![]() Other tests, such as an x-ray or sputum sample, are needed to see if the person has TB disease. It does not necessarily mean that the person has TB disease. What if the test is positive?Ī positive reaction usually means that the person has been infected with the TB germ. The test may also be falsely negative if the person's immune system is not working properly. It usually takes 2 to 10 weeks after exposure to a person with TB disease for the skin test to react positive. However, the test may be falsely negative in a person who has been recently infected. What if the test is negative?Ī negative test usually means the person is not infected. If there is a reaction, the size of the reaction is measured. The person getting the test must return in 48 to 72 hours to see if there is a reaction to the test. This is usually done on the inside of the arm. How is the skin test given?Ī small needle is used to put some testing material, called tuberculin, just under the skin. You can get a TB skin test from your doctor or local health department. Where can I get a TB skin Test or blood test? However, these people may develop TB disease in the future, especially if they are in one of the high risk groups listed under "Who gets TB?" Medicine is often prescribed for these people to prevent them from developing TB disease. ![]() They are not sick because the germ lies inactive in their body. People with TB infection (without disease) have the germ that causes TB in their body. Medicines which can cure TB are prescribed for these people. Permanent body damage and death can result from the disease. These people are often capable of giving the infection to others. They usually have one or more of the symptoms of TB. People with TB disease are sick from germs that are active in their body. What is the difference between TB infection and TB disease? If it is positive, you will probably be given other tests to see if you have TB infection or TB disease. How can I tell if I have TB?įirst, get a TB skin test or blood test. People with HIV infection (the virus that causes AIDS).People with medical conditions such as diabetes, certain types of cancers, and being underweight and especially.Health care workers who serve high-risk clients.People who live in high-risk residential settings, such as nursing homes, homeless shelters, or correctional facilities.Foreign-born people from countries where a lot of people have TB.Low-income groups with poor access to health care, including homeless people.People who share the same breathing space (such as family members, friends, co-workers) with someone who has TB disease.World Tuberculosis (TB) Day 2021 Centers for Disease Control and Health Protection Page last reviewed: MaContent source: Division of Tuberculosis Elimination, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and PreventionĪnyone can get TB, but some people are at higher risk. 8,300 cases of TB were seen in the US in 2022 ( 2.5 cases per 100,00 people).13 million people living in the US are living with Latent TB infection.In 2019, 1.2 million children fell ill with TB globally and 465,000 people fell ill with drug-resistant TB.In 2021, 2 Billion people – one fourth of the world's population – are infected with the TB bacteria, with more than 10 million becoming ill with active TB disease each year.Tuberculosis (TB) is the world’s deadliest infectious disease: A person who breathes in the bacteria can become infected. Through the 'shared air principle' TB germs are put into the air when someone with pulmonary TB disease (TB in their lungs) coughs or sneezes. Tuberculosis is spread from person to person through the air. Other symptoms depend on the particular part of the body that is affected. Symptoms of TB of the lungs may include cough, chest pain and/or coughing up blood. General symptoms may include feeling weak or sick, weight loss, fever and/or night sweats. TB can also affect other parts of the body, such as the brain, the kidneys or the spine. The germs are put into the air when a person with TB of the lung coughs, sneezes, laughs or sings. Tuberculosis (TB) is a disease that is spread from person to person through the air. What should I do if I have TB infection or disease?.Where can I get a TB skin Test or blood test?.
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