1665. The Cascade of Care for the Strong Hearts Chagas Disease Screening and Treatment Program in East Boston, Massachusetts

BACKGROUND: Over 300,000 people in the United States are infected with Trypanosoma cruzi, the parasite that causes Chagas disease. Less than 1% of those people have received antitrypanosomal therapy. We report findings of an ongoing project to address Chagas disease in East Boston, including the epidemiology and cascade of care for this disease. METHODS: Providers at the East Boston Neighborhood Health Center were offered continuing medical education sessions on Chagas disease by the Strong Hearts project. One-time screening for Chagas disease is recommended for all patients <50 years old who had lived in Mexico, South or Central America for ≥6 months at the provider’s discretion. Screening is performed by a commercial laboratory using the Hemagen ELISA; confirmatory testing is performed at CDC. Patients with confirmed positive serology are referred to the Center for Infectious Diseases (ID) at Boston Medical Center for evaluation and treatment. We compared the prevalence of Chagas disease by age, sex and national origin. We then used a conditional numerator and fixed denominator to construct the cascade of care, with the stages defined as referred to ID care, evaluation in ID, initiation of treatment and completion of antitrypanosomal therapy. We used chi-squared tests to compare proportions. RESULTS: From March 21, 2017 to April 17, 2019, 5,125 patients were screened. 50 (0.97%) were confirmed to have T. cruzi infection, among them 3 pregnant women. There were no differences in the prevalence of T. cruzi infection by sex (M = 22/1870 [1.18%], F = 28/3305 [0.85%], P = 0.245) but prevalence increased from 0/190 (0%) in those <20 years old to 11/1083 (1.02%) in 40–49 year olds (P = 0.001). The 3 infants of infected mothers were screened. The cascade of care for Strong Hearts is displayed in Figure 1. CONCLUSION: Chagas disease prevalence in at-risk communities in Boston is substantial. 20% of patients with T. cruzi infection identified in this program have completed treatment to date. Most infected patients were referred for evaluation, but substantial drop-off occurred at each of the next 3 steps of the cascade. Confronting barriers at each of these steps is a crucial component of efforts to address this neglected disease. [Image: see text] DISCLOSURES: All authors: No reported disclosures.