Effect of Dolutegravir and Multimonth Dispensing on Viral Suppression among Children with HIV

Background:Few studies in sub-Saharan Africa have assessed the impact of multimonth dispensing (MMD) of antiretroviral therapy (ART) and dolutegravir (DTG) beyond clinical trials among children with HIV (CWHIV). We assessed the effect of the 2 interventions on achieving undetectable viral load (VL) among CWHIV in the age group of 0-15 years in Nigeria.Methods:We used longitudinal routine records and cross-sectional survey data from caregivers of a subsample of children. VLs were considered suppressed at <1000 copies/mL and undetectable at <50 copies/mL. Multimonth dispensing (MMD) was defined as ART refill for >84 days. The effect of MMD and DTG on VL levels and associations between social factors and VL were estimated using generalized linear models, reporting adjusted relative risks/prevalence ratios and 95% confidence intervals (CIs).Results:Of 2490 CWHIV, 52% were male, with a median age of 10 years (interquartile ranges: 6-13) and a median duration on ART of 4.6 years (interquartile ranges: 2.8-7.1). Overall, 73% were on DTG and 55% received MMD. At baseline, 63% were suppressed, while 79% and 56% were suppressed and undetectable in their last VL, respectively. We found no differences in undetectable VL between those on MMD and not on MMD (adjusted relative risks: 1.05 [95% CI: 0.94-1.18]) and between those on DTG and not on DTG (1.07 [0.92-1.25]). In secondary analyses, poor adherence and being in a support group were associated with a lower likelihood of undetectable VL (adjusted prevalence ratios: 0.85 [95% CI: 0.74-0.96] and 0.81 [0.68-0.96], respectively).Conclusion:MMD did not compromise treatment outcomes for CWHIV. Poor adherence, however, remains a barrier to achieving treatment targets.