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Driving to Reduce Socioeconomic Barriers to Latent Tuberculosis Infection Care: A Mobile Pediatric Treatment Program

Context: Tuberculosis (TB) disease causes significant morbidity, mortality, and public health impacts. Prevention of latent tuberculosis infection (LTBI) in children reduces the burden of disease. Program: The Texas Children's Mobile Clinic Program's (TC-MCP's) mission is to provide high-quality health care to underresourced children within the community setting. The TC-MCP serves a large foreign-born pediatric population. The need for an LTBI treatment program arose when caring for this high-risk population. Implementation: The TC-MCP providers collaborated with nationally recognized pediatric TB experts as well as local health departments that provide medications free of cost. The TC-MCP placed tuberculin skin tests (TSTs) on patients with risk factors for TB. TST-positive patients had an interferon-γ release assay (IGRA) performed. IGRA-positive patients had a chest radiograph (CXR) obtained. Children with positive IGRA and normal CXR were included in the LTBI program, which consisted of TC-MCP outpatient visits and 12 once-weekly doses of isoniazid/rifapentine (3HP) provided by local health departments. Results: From January 2018 to March 2020, 785 TC-MCP patients received TSTs, of which 38 (4.8%) were positive. An additional 7 positive TSTs were identified from outside facilities. In addition to the 45 positive TSTs, 4 TC-MCP patients with follow-up difficulties had IGRAs done as the initial test. Of these 49 IGRAs done, 13 patients had a positive IGRA. An additional 6 patients with positive IGRAs from outside facilities were identified. Nineteen patients (36.5%) were diagnosed with LTBI; of whom, 18 completed 3HP therapy through the TC-MCP. Eighty-three percent (15/18) completed at least 2 in-person visits. Discussion: Underresourced children at higher risk for TB benefit from a mobile clinic's unique reach. By utilizing community partnerships, mobile clinics can successfully fill gaps in the health care system where marginalized populations may be missed.