Maternal HIV viral load threshold for guiding extended infant prophylaxis
Journal of Infection·
- DOI
- 10.1016/j.jinf.2026.106779
- PMID
- 42250654
- PMCID
- —
- OpenAlex
- W7163748930
- Study type
- Guideline
- Publisher
- Elsevier BV
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The findings support a simplified risk-stratified approach to initiating extended infant postnatal prophylaxis, potentially enabling more targeted and resource-efficient prevention of mother-to-child HIV transmission during breastfeeding.
Structured evidence summary
Research question
The study evaluated whether a single maternal viral load measurement at 6-8 weeks postpartum can accurately identify breastfed infants who require extended postnatal prophylaxis beyond the universal 6-week period.
Study design
The study assessed 1398 viral load measurements from breastfeeding mothers at three time points: baseline (6-8 weeks), 6 months, and 12 months postpartum. Infants were classified as high-risk when maternal viral load reached or exceeded 1000 copies/mL.
Population and setting
The study enrolled breastfeeding mothers living with HIV and their infants in Zambia and Burkina Faso.
Main findings
Mothers with baseline viral load between 40 and 1000 cp/mL were 6 times more likely, and those with viral load at or above 1000 cp/mL were 18 times more likely, to exceed 1000 cp/mL during breastfeeding compared to mothers below 40 cp/mL. A 40 cp/mL threshold at 6-8 weeks postpartum outperformed the standard threshold in identifying infants eligible for extended prophylaxis.
Public-health relevance
The findings support a simplified risk-stratified approach to initiating extended infant postnatal prophylaxis, potentially enabling more targeted and resource-efficient prevention of mother-to-child HIV transmission during breastfeeding.
Important limitations
This summary is limited to the supplied single-article abstract and metadata. Decision-grade interpretation requires review of the original paper, including details on participant selection, loss to follow-up, assay methodology, and generalizability beyond the two study countries.
GIDS interpretation
The article was classified under AIDS with links to Burkina Faso and Zambia, and tagged for health policy and transmission dynamics. This classification supports discoverability for users monitoring prevention of mother-to-child transmission strategies and guideline development in sub-Saharan African settings.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 12 auditable classifier relationships to diseases, places, topics, and study design.