Risk of hospitalization or death does not differ in children exposed to HIV, yet uninfected compared to nonexposed peers in Lusaka, Zambia
Related Experiment Video
Updated: May 28, 2025

Isolation of Leukocytes from Human Breast Milk for Use in an Antibody-dependent Cellular Phagocytosis Assay of HIV Targets
Published on: September 6, 2019
Julie M Herlihy1,2, Ethan Zulu3, Lawrence Mwananyanda3
1Boston University, Chobanian & Avedisian School of Medicine, Department of Pediatrics, Boston Medical Center.
Insights
Children exposed to HIV but uninfected (CHEU) showed no increased mortality or hospitalizations. Early combination antiretroviral therapy (cART) and exclusive breastfeeding effectively reduced morbidity in CHEU.
Area of Science:
- Pediatric Infectious Diseases
- Maternal and Child Health
- Public Health Epidemiology
Background:
- Children exposed to HIV but uninfected (CHEU) historically exhibit increased morbidity and mortality.
- The impact of universal combination antiretroviral therapy (cART) for pregnant women and exclusive breastfeeding on CHEU health disparities remains unclear.
Purpose of the Study:
- To assess the morbidity and mortality rates in CHEU during the first six months of life.
- To determine if disparities in CHEU health outcomes are linked to cART initiation timing or maternal immune activation.
Main Methods:
- A longitudinal cohort study (Zambia Infant Cohort Study) enrolled pregnant women with and without HIV (1:1 ratio).
- Infants were monitored from birth up to 24 weeks for illnesses, hospitalizations, feeding practices, immunizations, and medication compliance.
- Maternal health and cART status were assessed during pregnancy.
Main Results:
- Out of 1276 livebirths, 36 deaths and 89 hospitalizations occurred within six months.
- No significant difference in hospitalization or death rates was observed between CHEU and HIV-unexposed children (IRR 1.27, P=0.33).
- Exclusive breastfeeding was associated with a 43% reduction in hospitalization risk.
Conclusions:
- In a setting with moderate cART uptake, CHEU did not experience increased hospitalizations or deaths.
- Early cART initiation and exclusive breastfeeding are effective strategies to mitigate morbidity among CHEU.
Objective:
Increased mortality and morbidity has been observed among children who are HIV-exposed, uninfected (CHEU). It is unknown if health disparities remain despite promotion of exclusive breastfeeding and adoption of universal combination antiretroviral therapy (cART) for pregnant women.
Design:
We conducted a longitudinal cohort study among pregnant women with and without HIV [Zambia Infant Cohort (ZICS)] with the primary goal to measure the morbidity/mortality experienced by CHEU in first 6 months of life, and secondarily whether such disparities could be explained by timing of cART initiation or elevated maternal immune activation.
Methods:
Pregnant women with/without HIV (1 : 1) were enrolled prior to 26 weeks gestation by ultrasound and assessed twice antenatally. Infants were seen at birth, 6 days, 6, 10, 14, 20, and 24 weeks of age and assessed for illnesses, sick visits/hospitalizations, infant feeding, immunizations, and co-trimoxazole compliance.
Results:
From 1276 livebirths, there were 36 deaths and 89 hospitalizations over 6 months. Preconception cART uptake was 73%, and majority of pregnant women with HIV had suppressed viral loads at enrollment. There was no difference in hospitalization or death rates for CHEU as compared to HIV-unexposed children [incidence rate ratio (IRR) 1.27, 95% CI 0.79-2.04, P = 0.33]. This did not shift after adjusting for maternal immune activation prematurity or small for gestational age (SGA). Exclusive breastfeeding reduced risk of hospitalization by 43%.
Conclusion:
In this setting of moderate cART uptake, we found no evidence of increased hospitalizations or deaths among CHEU. We conclude that the observed increased morbidity among CHEU can be effectively mitigated through early initiation of cART and exclusive breastfeeding.
Related Concept Videos
Relative Risk
Immunodeficiency Diseases
There are three main causes of immunodeficiency...
Hazard Rate
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Sexually Transmitted Infections
Testing a Claim about Mean: Known Population SD
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...

