HIV risk exposure among South African children in public health facilities

O Shisana1, C Connolly, T M Rehle

  • 1Human Science Research Council, Cape Town, South Africa. oshisana@hsrc.ac.za

AIDS Care
|August 30, 2008
PubMed

Insights

HIV risk in South African children is primarily mother-to-child, but other transmission routes exist. Breastfeeding by non-biological mothers and dental procedures pose risks, highlighting the need for improved infection control and education.

Area of Science:

  • Pediatric Infectious Diseases
  • Epidemiology
  • Public Health

Background:

  • Mother-to-child transmission (MTCT) is a significant route of Human Immunodeficiency Virus (HIV) infection in children.
  • Understanding non-vertical transmission routes is crucial for comprehensive HIV prevention strategies in pediatric populations.
  • South Africa faces a substantial burden of pediatric HIV, necessitating detailed risk assessment.

Purpose of the Study:

  • To investigate risk factors for HIV infection exposure in South African children aged 2-9 years.
  • To identify modes of HIV transmission beyond mother-to-child transmission in the study population.
  • To inform public health interventions for preventing pediatric HIV infections.

Main Methods:

  • A cohort of 3471 children and their biological mothers were recruited from public health services in the Free State Province.
  • Blood samples were collected for HIV testing, and exposure factors were assessed through nurse-administered questionnaires.
  • DNA testing confirmed maternity in cases of HIV-discordant mother-child pairs. Statistical analyses included chi-square tests and multiple logistic regression.

Main Results:

  • Maternal HIV status was a strong predictor of child HIV infection (OR: 310).
  • Seven HIV-positive children had HIV-negative mothers, with transmission linked to non-biological mother breastfeeding (OR: 437), milk room expressed breast milk (OR: 37.6), dental injection history (OR: 31.5), and dental visits (OR: 26.9).
  • These findings indicate potential risks of non-vertical HIV transmission in children.

Conclusions:

  • While MTCT is the predominant HIV transmission route in South African children, other transmission pathways are evident.
  • Non-vertical transmission risks, particularly associated with breastfeeding practices and dental procedures, require targeted prevention efforts.
  • Enhanced education and improved infection-control measures are essential to mitigate non-vertical HIV transmission risks in children.

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