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AIDS:
doi: 10.1097/QAD.0b013e32835faa95
Epidemiology and Social

Higher rates of AIDS during the first year of antiretroviral therapy among migrants: the importance of tuberculosis

The Antiretroviral Therapy Cohort Collaboration (ART-CC)

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Abstract

Objective: In lower-income countries rates of AIDS-defining events (ADEs) and death are high during the first year of combination antiretroviral therapy (ART). We investigated differences between foreign-born (migrant) and native-born (nonmigrant) patients initiating ART in Europe, the US and Canada, and examined rates of the most common ADEs and mortality during the first year of ART.

Design: Observational cohort study.

Methods: We studied HIV-positive adults participating in one of 12 cohorts in the Antiretroviral Therapy Cohort Collaboration (ART-CC).

Results: Of 48 854 patients, 25.6% were migrants: 16.1% from sub-Saharan Africa, 5.6% Latin America, 2.3% North Africa/Middle East, and 1.6% Asia. Incidence of ADEs during the first year of ART was 60.8 per 1000 person-years: 69.9 for migrants and 57.7 for nonmigrants [crude hazard ratio (HR) 1.18; 95% confidence interval (CI) 1.08–1.29], adjusted HR (for sex, age, CD4, HIV-1 RNA, ART regimen, prior ADE, probable route of infection and year of initiation, and stratified by cohort) 1.21 (95% CI 1.09–1.34). Rates of tuberculosis were substantially higher in migrants than nonmigrants (14.3 vs. 6.3; adjusted HR 1.94; 95% CI 1.53–2.46). In contrast, mortality was higher among nonmigrants than migrants (crude HR 0.71; 95% CI 0.61–0.84), although excess mortality was partially explained by patient characteristics at start of ART (adjusted HR 0.91; 95% CI 0.76–1.09).

Conclusions: During the first year of ART, HIV-positive migrants had higher rates of ADEs than nonmigrants. Tuberculosis was the most common ADE among migrants, highlighting the importance of screening for tuberculosis prior to ART initiation in this population.

© 2013 Lippincott Williams & Wilkins, Inc.

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