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A positive Mantoux tuberculin skin test or interferon-gamma release assay result indicates TB exposure and infection, but neither can distinguish latent TB infection from active TB disease.
In accordance with WHO guidelines, the tuberculin skin test (TST) or interferon-gamma release assays (IGRA) can be used to test pregnant women for TB exposure as well. It should be noted that, because of immune system changes in pregnancy, these tests may be falsely negative among pregnant women (4,11,12). Recent evidence shows that IGRA may
14 maj 2024 · If the first TB skin test result is negative, a second TB skin test should be done 1 to 3 weeks later. If the second TB skin test result is positive, it is probably a boosted reaction. Based on this second test result, the person should be classified as previously infected.
23 kwi 2023 · Negative PPD Skin Test. If the patient is at a high risk of developing an active TB infection, a repeat test is recommended if the initial test is negative. Repeat testing should also be performed if the initial test was done within eight weeks of known exposure.
6 gru 2022 · It is critical to prevent TB disease during pregnancy. Maternal TB disease is associated with poor outcomes including miscarriage, pre-eclampsia/eclampsia, low birthweight, premature birth, and mortality, in addition to TB transmission to the infant and family [10].
In some people, the BCG TB vaccine may cause a positive TB skin test even if they are not infected with TB germs. Unlike the TB skin test, TB blood tests are not affected by prior BCG vaccination. Therefore, TB blood tests are the preferred test for people who have received the BCG TB vaccine.
22 mar 2024 · Anyone, including pregnant people, with a positive test result for TB infection (TB blood test or TB skin test), symptoms of TB disease, or who have spent time with a person with active TB disease should receive a medical evaluation for TB.
