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.