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Testing every 2 to 3 years is recommended for children who have been exposed to high-risk individuals and at age 4 to 6 for those living in high prevalence areas, those who travel to countries with high prevalence, and those whose parents have emigrated from countries with high prevalence of TB.
If the TB test is positive but there is no other evidence suggesting infection, a TB expert should be consulted. Follow-up symptom screening and chest X-ray should be performed at 3, 6, 12, 18, and 24 months, because the risk of developing active TB from LTBI is highest during the first 2 years.