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Primary and secondary prevention of tuberculosis
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Recommended: Primary and secondary prevention of tuberculosis
TB diagnosis and Treatment
Diagnosis
TB is a very dangerous and serious disease. There are about millions of new cases of TB diagnosed each year around the world. Also, there are almost 3 million people who have TB but have not been diagnosed. It is really important for people to monitor their health and be aware of TB infection. If you have symptoms such as unexplained weight loss, night sweat, fever, fatigue, chest pain and coughing for weeks or even coughing up blood, you should suspect your have the TB and go see the doctor.
Usually not all of the people who have TB bacteria in their bodies will be sick. There are two types of TB infection: latent TB infection and active TB infection. It is hard to diagnosis latent TB infection because there are no symptoms. On the other hand, active TB infection is much easier to diagnosis than the latent TB infection. However, sometimes misdiagnosis can occur because the symptoms of active TB infection are very similar to the symptoms of upper respiratory infection, bronchitis, cold and pneumonia.
A TB skin test, also known as a PPD test, and a TB blood test are the two most commonly used ways to test for TB. For the TB skin test, the doctor will inject a small amount of liquid called tuberculin, a protein extract from cultures of TB bacteria, into the skin of your arm. The patients usually need to wait 48 to 72 hours for the test result. If you have a localized swelling at your injection area, it means you probably have the TB disease. However, the test result can be wrong. A negative test result could be a false negative, which means the individual could have TB; this occurs in 5% to 10% of patients, especially in patients who have HIV, children and elderly people. On the other hand, the ...
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Paul Farmer designed several studies that he used to help create new TB treatment methods, including a study about a system called active case finding, which helps find TB cases more quickly. The previous system of tuberculosis case finding is known as passive case finding. Passive case finding is when tu...
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PPD skin test is a way to detect mycobacteria infection. A positive PPD skin test is the result of a specific immune response against the antigen introduced into the skin of a person who has been exposed to mycobacteria either from previous infected with TB or from receiving BCG.
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Symptoms of tuberculosis include: coughing, chest pains, fatigue, fever, unintentional weight loss, etc . . .
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One of the first steps to treating Tuberculosis is identifying which form has developed in the body. The two forms that could progress in the body are latent Tuberculosis infection and active Tuberculosis infection (CDC, Morbidity and Mortality Weekly Reports). Latent Tuberculosis is the dormant form of the bacteria, meaning that it is inactive and doesn?t cause an infectious reaction in the body. Even if the latent form enters the body, treatment should be sought (CDC, Morbidity and Mortality Weekly Reports). Latent Tuberculosis can become active Tuberculosis easily though, especially if the immune system is compromised by another infection, like HIV (CDC, Morbidity and Mortality Weekly Reports). Active Tuberculosis infects the body immediately. Symptoms show in the body meaning the bacteria is effecting the cells of the body. Identifying the form is important because treatment is dependent upon it. Testing for TB involves a skin test, usually within seven work-days of contact with the bacteria. Without knowing what is in the body, the drugs won?t be as effective and might even cause drug-resistance.
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is positive; three Sputum Test reveals if TB germs are in thick liquid a person
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Primary tuberculosis is the initial infection of the host, usually being mild and asymptomatic. A healthy person recently infected with the mycobacterium may exhibit flu-like symptoms and has no reason to suspect tuberculosis. Left untreated, the bacilli infect and multiply within pulmonary alveolar macrophages, migrating to the hilar lymph nodes. An immune response is exhibited by the T-helper cells, and inflammation develops at multiple sites. A person may test positive in the tuberculin skin test at this point, and a chest x-ray may shows opacities in the lungs.
The bacterial then necrotic, forming a cheesy mass, this mass may become calcified and form a collagenous scar (Bare et al. 2008). The 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' of the 'S At this point, the bacteria becomes dormant and there is no further progression of the active disease. The disease can become active again by re-infection or activation of the dormant bacteria (Bare et al. 2008). The 'Secondary' of the 'Secondary' of the 'Secondary' of the 'Secondary' TB can be classified as latent or active (Bare et al. 2008).
Infection rates of TB are high, especially when in frequent or close contact with individuals with active TB. One study estimates an infection rate of about 22% and a diagnosis with positive sputum smear is the strongest indicator of infectiousness. 19 However, contrary to common belief, sputum smear-negative patients are also infectious, with a study in San Francisco attributing 17% of transmissions to such cases. 20
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