Active Tuberculosis
Class 3 includes anyone with active TB based on the presence of symptoms or positive laboratory testing. Typical symptoms include a persistent cough that may produce blood or mucus, fever, chills, night sweats, pain in the chest, loss of appetite, weight loss and weakness. A diagnosis of active TB can be confirmed via a number of lab tests, the most important of which is identifying the presence of Mycobacterium tuberculosis -- the bacteria that causes TB -- in the body. The most common way to diagnose active pulmonary TB is by finding the bacteria in a sample of sputum.
Inactive or Suspected Tuberculosis
Class 4 TB identifies people who had active TB in the past but no longer show any evidence of active disease. Their skin tests are positive and chest x-rays may be abnormal, but they have no symptoms and their lab tests are negative. Class 5 includes those individuals who are suspected of having TB but are still waiting for test results to confirm whether they have the disease. Some people in class 5 may already be receiving treatment while they wait for the final test results. Once all test results are completed, the individual will be moved to the most appropriate class.
Active TuberculosisClass 3 includes anyone with active TB based on the presence of symptoms or positive laboratory testing. Typical symptoms include a persistent cough that may produce blood or mucus, fever, chills, night sweats, pain in the chest, loss of appetite, weight loss and weakness. A diagnosis of active TB can be confirmed via a number of lab tests, the most important of which is identifying the presence of Mycobacterium tuberculosis -- the bacteria that causes TB -- in the body. The most common way to diagnose active pulmonary TB is by finding the bacteria in a sample of sputum.Inactive or Suspected TuberculosisClass 4 TB identifies people who had active TB in the past but no longer show any evidence of active disease. Their skin tests are positive and chest x-rays may be abnormal, but they have no symptoms and their lab tests are negative. Class 5 includes those individuals who are suspected of having TB but are still waiting for test results to confirm whether they have the disease. Some people in class 5 may already be receiving treatment while they wait for the final test results. Once all test results are completed, the individual will be moved to the most appropriate class.
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