Vertical Transmission Study (VTS)
The VTS aimed to determine the effect of infant feeding practices on human immunodeficiency virus (HIV) infection rates of infants at 6 and 22 weeks of age, and the infant survival rate at 24 months of age, according to feeding practices and HIV status. From 2001, over 3,400 HIV-infected and -uninfected pregnant women and almost 3,000 of their infants were recruited from KwaZulu-Natal and Durban in South Africa. All pregnant women were tested for HIV and counselled on infant feeding options. The pregnant women were assessed from the antenatal period to 2 years post-partum, and their children were assessed from birth to 2 years of age until 2006.
Study design
Cohort, Cohort - birth, Cohort - primary caregiver and child, Cohort - clinical
Number of participants at first data collection
3,445 (pregnant women)
2,938 (infants)
Age at first data collection
≥ 16 years (pregnant women)
Birth (infants)
Participant year of birth
Varied (pregnant women)
No information available (infants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2001
Primary Institutions
University of KwaZulu-Natal (INyuvesi yakwaZulu-Natali, UKZN)
Links
No website available
Profile paper DOI
Funders
Wellcome Trust
Ongoing?
No
Data types collected
- Activity log (e.g. food, sleep, exercise)
- Interview – face-to-face
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Secondary data
- None
- None
- Medical birth registry
Engagement
Keywords
