RESUMO
Background: Persistent low-level viraemia (PLLV) is a risk factor for virologic failure among people receiving antiretroviral therapy (ART). Objectives: We assessed the prevalence and predictors of PLLV among individuals receiving Dolutegravir-based ART in southern Nigeria. Design: This retrospective cohort study used routine program data from electronic medical records of persons receiving Dolutegravir-based first-line ART in 154 PEPFAR/USAID-supported health facilities in Akwa Ibom and Cross Rivers states, Nigeria. Methods: Clients on first-line Dolutegravir-based ART ⩾6 months, who had a viral load result in the 12 months preceding October 2021 (baseline), and a second viral load result by September 2022 were included. Persons with low-level viraemia (LLV) (viral load 51-999 copies/ml) received additional adherence support. The outcome analysed was PLLV (two consecutive LLV results). Indices were summarized using descriptive statistics, and predictors of PLLV were determined using multivariate logistic regression. Results: In total, 141,208 persons on ART were included, of which 63.3% (n = 89,944) were females. The median age was 36 [29-44] years, median ART duration was 19 [11-42] months. At the end of the study, 10.5% (14,759/141,208) had initial LLV, 90.1% (13,304/14,759) of which attained undetectable viral load (⩽50 copies/ml), and 1.1% (163/14,759) transitioned to virologic failure (⩾1000 copies/ml) by the end of the study. PLLV prevalence was 0.9% (1292/141,208). Increasing ART duration [adjusted odds ratio (aOR) = 1.0; 95% confidence interval (CI): 1.005-1.008; p < 0.001] and viral suppression (<1000 copies/ml) before initial LLV (aOR = 1.7; 95% CI: 1.50-2.00; p < 0.001) were positively associated with PLLV, while receipt of tuberculosis preventive therapy reduced the likelihood of PLLV (aOR = 0.3; 95% CI: 0.10-0.94; p = 0.039). Conclusion: PLLV was uncommon among individuals receiving dolutegravir-based ART and was associated with longer ART duration, prior viral suppression, and non-receipt of tuberculosis preventive therapy. This strengthens recommendations for continuous adherence support and comprehensive health services with ART, to prevent treatment failure.
RESUMO
Studies show that treatment outcomes may vary among persons living with HIV. To fast-track the attainment of epidemic control across gender and age groups, the Accelerating Control of the HIV Epidemic (ACE-5) Project implemented in Akwa Ibom and Cross Rivers States, Nigeria, examined the hypertension rates and treatment outcomes of older adults living with HIV. The demographic and treatment characteristics of males and females ≥ 50 years living with HIV, who initiated antiretroviral therapy (ART) as of September 2021, were abstracted from medical records across 154 health facilities and community sites in Akwa Ibom and Cross River states, Nigeria. We compared these characteristics by sex using the chi-square test. The log-rank test was used to compare differences in their retention (i.e., being on treatment) and viral suppression (VS) rates [<1000 copies/Ml] in September 2022. Of the 16,420 older adults living with HIV (10.8% of the treatment cohort) at the time of the study, 53.8%, and 99.5% were on a first-line ART regimen. Among the 3585 with baseline CD4 documented (21.8% of the cohort), the median [IQR] CD4 count was 496 [286-699] cells/mm3, with more males having lower baseline CD4 than females [13.4% of males vs. 10.2% of females, p-value = 0.004]. In total, 59.9% received treatment at out-of-facility locations, with more males receiving treatment in this setting than females [65.7% vs. 54.8% p-value < 0.001]. Of those in whom blood pressure was assessed (65.9% of the treatment cohort), 9.6% were hypertensive, with males being less likely to be hypertensive [8.0% vs. 11.1% p-value < 0.001] than females. Overall, retention as of September 2022 was 96.4%, while VS was 99.0% and did not differ significantly by sex [retention: p = 0.901; VS: p = 0.056]. VS was slightly but not significantly higher among females than males (98.8% versus 99.2%; Aor = 0.79, 95%CI = 0.58-1.10, p = 0.17). Although older males and females living with HIV had similar treatment outcomes, hypertension screening was suboptimal and could impact long-term morbidity and mortality. Our study emphasizes the need to integrate noncommunicable disease screening and the management of hypertension in the care of older persons living with HIV.
