Lindsey M Locks1, Karim P Manji2, Roland Kupka3, Enju Liu4, Rodrick Kisenge2, Christine M McDonald5, Said Aboud6, Molin Wang7, Wafaie W Fawzi8, Christopher P Duggan9. 1. Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA. 2. Department of Pediatrics, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania. 3. Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA; UNICEF Headquarters, New York, NY. 4. Clinical Research Center, Boston Children's Hospital, Boston, MA. 5. Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA. 6. Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania. 7. Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA. 8. Department of Nutrition, Department of Epidemiology, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA. 9. Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Boston, MA; Department of Nutrition, Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA. Electronic address: christopher.duggan@childrens.harvard.edu.
Abstract
OBJECTIVE: To compare health and growth outcomes in children infected with HIV, children exposed to but uninfected with HIV, and children unexposed to HIV. STUDY DESIGN: Our cohort included 3554 Tanzanian children enrolled in 2 trials of micronutrient supplementation. Among infants born to mothers infected with HIV, 264 were infected with HIV and 2088 were exposed to but uninfected at 6 weeks of age. An additional 1202 infants were unexposed to HIV. Infants were followed until 18 months of age, death, or loss to follow-up. Morbidity and growth were assessed at monthly nurse visits. RESULTS: Compared with unexposed infants, hazard ratios (95% CI) for all-cause mortality in infants infected with HIV and infants who were exposed to but uninfected with HIV were 28.99 (14.83-56.66) and 2.79 (1.41-5.53), respectively, after adjusting for demographic and nutritional covariates. Compared with infants unexposed to HIV, infants infected with HIV also had a significantly greater risk of all measured morbidities, while infants who were exposed to but uninfected with HIV were significantly more likely to suffer from cough, fever, unscheduled outpatient visits, and hospitalizations. Infants infected with HIV also were more likely to experience stunting, wasting, and underweight at baseline and during follow-up. Infants exposed to but uninfected with HIV were more likely to be underweight at baseline (adjusted relative risk, 2.05; 95% CI, 1.45-2.89), but on average, experienced slower declines in height-for-age z-score, weight-for-age z-score, and weight-for-height z-score as well as a lower rate of stunting over follow-up, compared with unexposed infants. CONCLUSION: In addition to preventing and treating HIV infection in infants, prevention-of-mother-to-child-transmission of HIV and child health services should also target children exposed to but uninfected with HIV to improve health outcomes in this vulnerable population. TRIAL REGISTRATION: Clinicaltrials.gov: NCT00197730 and NCT00421668.
OBJECTIVE: To compare health and growth outcomes in children infected with HIV, children exposed to but uninfected with HIV, and children unexposed to HIV. STUDY DESIGN: Our cohort included 3554 Tanzanian children enrolled in 2 trials of micronutrient supplementation. Among infants born to mothers infected with HIV, 264 were infected with HIV and 2088 were exposed to but uninfected at 6 weeks of age. An additional 1202 infants were unexposed to HIV. Infants were followed until 18 months of age, death, or loss to follow-up. Morbidity and growth were assessed at monthly nurse visits. RESULTS: Compared with unexposed infants, hazard ratios (95% CI) for all-cause mortality in infants infected with HIV and infants who were exposed to but uninfected with HIV were 28.99 (14.83-56.66) and 2.79 (1.41-5.53), respectively, after adjusting for demographic and nutritional covariates. Compared with infants unexposed to HIV, infants infected with HIV also had a significantly greater risk of all measured morbidities, while infants who were exposed to but uninfected with HIV were significantly more likely to suffer from cough, fever, unscheduled outpatient visits, and hospitalizations. Infants infected with HIV also were more likely to experience stunting, wasting, and underweight at baseline and during follow-up. Infants exposed to but uninfected with HIV were more likely to be underweight at baseline (adjusted relative risk, 2.05; 95% CI, 1.45-2.89), but on average, experienced slower declines in height-for-age z-score, weight-for-age z-score, and weight-for-height z-score as well as a lower rate of stunting over follow-up, compared with unexposed infants. CONCLUSION: In addition to preventing and treating HIV infection in infants, prevention-of-mother-to-child-transmission of HIV and child health services should also target children exposed to but uninfected with HIV to improve health outcomes in this vulnerable population. TRIAL REGISTRATION: Clinicaltrials.gov: NCT00197730 and NCT00421668.
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