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  • Title: Lower Neurocognitive Functioning in HIV-Exposed Uninfected Children Compared With That in HIV-Unexposed Children.
    Author: Benki-Nugent SF, Yunusa R, Mueni A, Laboso T, Tamasha N, Njuguna I, Gómez L, Wamalwa DC, Tapia K, Maleche-Obimbo E, Bangirana P, Boivin MJ, John-Stewart GC.
    Journal: J Acquir Immune Defic Syndr; 2022 Apr 01; 89(4):441-447. PubMed ID: 35202050.
    Abstract:
    BACKGROUND: Perinatal HIV and antiretroviral therapy exposure may influence neurocognitive outcomes, although evidence is mixed and most studies are limited to outcomes in the first 24 months. We compared neurocognitive outcomes in school-aged children who were HIV exposed uninfected (CHEU) with those in children who were HIV unexposed uninfected (CHUU). SETTING: Children were recruited from a health center in Nairobi, Kenya. METHODS: Key inclusion criteria were children aged 5-12 years and confirmed child and maternal HIV status; for CHEU, mothers reported knowing HIV-positive status before or at delivery of the index child. Children underwent a detailed battery of neuropsychological tests and behavioral assessment, and comparisons of scores between CHEU and CHUU were conducted using linear regression. RESULTS: Among 56 CHEU and 65 CHUU, the median age and sex distributions were 6.8 and 7.0 years (P = 0.8) and 48% and 60% girls (P = 0.2), respectively. In analyses adjusted for child's age and sex and caregiver's age, education, and household rent, CHEU had significantly lower mean z scores for global cognitive ability than CHUU [-0.35, 95% confidence interval (CI): -0.64 to -0.05; P = 0.02], short-term memory (-0.44, 95% CI: -0.76 to -0.12; P = 0.008), delayed memory (-0.43, 95% CI: -0.79 to -0.08; P = 0.02), attention (-0.41, 95% CI: -0.78 to -0.05; P = 0.03), and processing speed (-0.76, 95% CI: -1.37 to -0.16; P = 0.01). Models adjusted for child nutritional status, household food security, and orphanhood yielded similar results. CONCLUSIONS: Children exposed to HIV had poorer long-term neurocognitive outcomes than CHUU. These data suggest that long-term studies of neurocognitive and educational attainment in CHEU are warranted.
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