Overseas Treatment of Latent Tuberculosis Infection in US–Bound Immigrants
, Christina R. Phares, Hoang Lan Phuong, Dang Thi Kieu Trinh, Ha Phan, Cindy Merrifield, Phan Thi Hong Le, Quach Thi Kim Lien, Sooc Ngoc Lan, Phan Thi Kim Thoa, Le Tran Minh Thu, Tiffany Tran, Cuc Tran, Lucy Platt, Susan A. Maloney, Nguyen Viet Nhung, Payam Nahid, and John E. Oeltmann
Author affiliations: Stop TB Partnership, Geneva, Switzerland (A. Khan); London School of Hygiene and Tropical Medicine, London, UK (A. Khan, L. Platt); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (C.R. Phares, C. Tran, S.A. Maloney, J.E. Oeltmann); Cho Ray Hospital Visa Medical Clinic, Ho Chi Minh City, Vietnam (H.L. Phuong, D.T.K. Trinh, P.T.H. Le, Q.T.K. Lien, S.N. Lan, P.T.K. Thoa, L.T.M. Thu); Vietnam National TB Program/University of California–San Francisco Research Collaboration, Hanoi, Vietnam (H. Phan, C. Merrifield, T. Tran, N.V. Nhung, P. Nahid); University of California–San Francisco, San Francisco, California, USA (H. Phan, C. Merrifield, P. Nahid); Vietnam National TB Program, Hanoi (N.V. Nhung)
Figure 2. Flowchart of US immigrant visa applicants who consented to participate, initiated treatment, and completed treatment along the latent TB infection cascade of care in the Preventing Tuberculosis Overseas Pilot Study, Vietnam, 2018–2019. Participants who completed ≥8 doses of 3HP by DOT in Vietnam were given the option of taking the remaining ≤4 doses by SAT after arrival in the United States. DOT, directly observed therapy; IGRA, interferon-γ release assay; LTBI, latent tuberculosis infection; SAT, self-administered therapy; TB, tuberculosis; 3HP, 3-month regimen of isoniazid and rifapentine.
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