Objectives
To assess the risks of and factors associated with mortality, loss to followup, and changing regimens after perinatally HIV-infected children initiate combination antiretroviral therapy (cART) in Latin America and the Caribbean.
Study design
This 1997–2013 retrospective cohort study included 1174 ART-naïve perinatally-infected children who started cART age<18 years (median 4.7 years; interquartile range [IQR] 1.7–8.8) at one of six cohorts from Argentina, Brazil, Haiti, and Honduras, within the Caribbean, Central and South America Network for HIV Epidemiology (CCASAnet). Median follow-up was 5.6 years (interquartile range [IQR] 2.3 to 9.3). Study outcomes were all-cause mortality, loss to followup, and major changes/interruption/stopping of cART. We used Cox proportional hazards models stratified by site to examine the association between predictors and times to death or changing regimens.
Results
Only 52% started cART <5 years of age; 19% began a protease inhibitor. At cART initiation, median CD4 count was 472 cells/mm3 (IQR: 201–902); median CD4% was 16% (IQR:10–23). Probability of death was high in the first year of cART: 0.06 (95% confidence interval [CI] 0.04–0.07). Five years after cART initiation, the cumulative mortality incidence was 0.12 (CI 0.10–0.14). Cumulative incidences for loss to followup and regimen change after five years were 0.16 (CI 0.14–0.18) and 0.30 (CI 0.26–0.34), respectively. Younger children had the highest risk of mortality, whereas older children had the highest risk of being lost to followup or changing regimens.
Conclusions
Innovative clinical and community approaches are needed for quality improvement for HIV pediatric care in the Americas.