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The UK guidelines are formulated according to the Heaf test: In patients who have had BCG previously, latent TB is diagnosed if the Heaf test is grade 3 or 4 and have no signs or symptoms of active TB; if the Heaf test is grade 0 or 1, then the test is repeated.
The QuantiFERON-TB Gold blood test measures the patient's immune reactivity to the TB bacterium, and is useful for initial and serial testing of persons with an increased risk of latent or active tuberculosis infection. Guidelines for its use were released by the CDC in December 2005. [26]
Under the US recommendations, diagnosis and treatment of latent tuberculosis infection (LTBI) is considered for any BCG-vaccinated person whose skin test is 10 mm or greater, if any of these circumstances are present: [citation needed]
[1] [9] People with latent TB do not spread the disease. [1] Active infection occurs more often in people with HIV/AIDS and in those who smoke. [1] Diagnosis of active TB is based on chest X-rays, as well as microscopic examination and culture of bodily fluids. [10] Diagnosis of latent TB relies on the tuberculin skin test (TST) or blood tests ...
The U.S. Citizenship and Immigration Services has an additional TB classification for immigrants and refugees developed by the Centers for Disease Control and Prevention (CDC). [3] The B notification program is an important screening strategy to identify new arrivals who have a high risk for TB.
On 25 June 2010, the US Centers for Disease Control and Prevention (CDC) updated the tuberculosis (TB) testing guidelines providing guidance to US public health officials, clinicians, and laboratory workers regarding screening for and diagnosis of TB infection. The updated guidelines provide new direction for TB control in the US. [11]
The tine test is a multiple-puncture tuberculin skin test used to aid in the medical diagnosis of tuberculosis (TB). The tine test is similar to the Heaf test, although the Mantoux test is usually used instead. There are various forms of the tine tests which usually fall into two categories: the old tine test (OT) and the purified protein ...
The Centers for Disease Control and Prevention's National Prevention Information Network (CDC NPIN) is a source of information and materials for both international and American HIV/AIDS, Viral Hepatitis, Tuberculosis, and Sexually Transmitted Disease education and prevention organizations.