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Background Tuberculosis is an important opportunistic infection that affects transplant recipients; the risk of active infection increases significantly when compared with the general population. Most disease results from reactivation of latent infection, being extrapulmonary and disseminated disease the most common presentations. Most cases occur during the first year post-transplantation when immunosuppression is higher. We describe the clinical characteristics of patients diagnosed with TB after transplant. Methods Single-center, retrospective study of adult SOT and HSCT recipients in Mexico City, who developed active TB after transplant. We reviewed medical records, and collected demographic data, clinical characteristics, and outcome. Results We identified 16 patients with post-transplant TB; 13 SOT, and 3 HSCT recipients. The majority of SOT recipients were women (53.8%); median age was 43 years, 9 were kidney and 4 liver transplant recipients. At TB diagnosis, 84.6% of patients were on 3 immunosuppressors. Latent TB was assessed before transplant in 5 patients (38.4%), of these 3 (60%) were tuberculin skin test+, and 2 received isoniazid. Extrapulmonary disease was most common (7, 53.8%). Predominant symptoms were fever (53.8%), chills (30.8%), and diaphoresis (38.5%); six were diagnosed during the 1st year (46.2%) post-transplant; the median of time to diagnosis was 24 months after transplant. The diagnosis was made by histopathology in most cases. Twelve patients received first-line anti-TB treatment. Overall mortality was 30.8%, directly attributable to TB in 2. In the HSCT group, 2 were women; median age was 22 years, 2 allogeneic and 1 autologous transplant. One patient had been treated for latent TB before transplantation. Two developed disseminated disease. Two patients presented within 6 months after the transplant, and the other within a year. Mortality was 100%, attributable to the infection in two patients. Conclusion In regions with intermediate to a high prevalence of TB; post-transplant TB could result from reactivation or post-transplant exposure. Most cases occur within the first year post-transplant; clinical symptoms are nonspecific, which lead to a delay in diagnosis. Morbidity and mortality remains high. Disclosures All authors: No reported disclosures.

1393. Tuberculosis (TB) After Solid-organ Transplant (SOT) and Hematopoietic Stem Cell Transplant (HSCT)