Postpartum HIV Care: Are We Reaching Everyone?
"New research from Tanzania highlights who's at risk of falling through the cracks in PMTCT programs, and what we can do about it."
For two decades, prevention of mother-to-child transmission (PMTCT) programs have dramatically reshaped the landscape of HIV treatment and prevention in low- and middle-income countries. Beyond preventing vertical transmission, PMTCT serves as a crucial entry point for broader HIV care, helping to lower community viral load and slow the epidemic. Yet, studies reveal a persistent challenge: women in these programs don't always stay engaged in care as effectively as needed.
Now, a new study from Kilimanjaro, Tanzania, sheds light on the factors impacting postpartum HIV care engagement. Researchers followed 200 women enrolled in PMTCT programs, tracking their engagement and identifying associated factors. Their findings offer valuable insights into who is most at risk and what interventions can make a difference.
This article breaks down the study's key findings, highlighting the specific challenges faced by women in PMTCT programs and exploring actionable strategies to improve care engagement and ensure better health outcomes for mothers and their children.
The Continuing Global Impact
In 2024, an estimated 120,000 new HIV infections occurred among children aged 0–14 years globally. Vertical transmission can occur during pregnancy, delivery, or breastfeeding. UNICEF reports that between 2000 and 2025, PMTCT programs prevented transmission to about 4.8 million children born to mothers with HIV.
From PMTCT to Lifelong Care
A standard approach links prevention of mother-to-child transmission with antiretroviral therapy and continuing HIV care after delivery. Effective transition from maternal and child health services to ART services, followed by long-term postpartum retention, is considered crucial for lifelong treatment. However, a systematic review found inconsistent effects from different levels of integration between antenatal or PMTCT care and ART care, while the relevant studies varied in design and outcome measures. Proposed PMTCT standards are intended to gauge performance but are generic and require country adaptation.
Expanding the PMTCT Agenda
PMTCT developed largely as a prevention-focused approach to pediatric HIV. Later analyses called for a more assertive agenda addressing the needs of children who become infected, alongside integration with maternal, newborn, and child health services at community, primary, secondary, and tertiary levels. UNICEF reports that accelerated PMTCT implementation prevented transmission to about 4.8 million children between 2000 and 2025. Research has also noted that childbirth experiences and their influence on the PMTCT care cascade have received limited attention.
Who's Missing from Postpartum HIV Care?
The Tanzanian study revealed that six months after delivery, a concerning 21% of participants exhibited poor care engagement. This was defined as having an elevated viral load (HIV RNA >200 copies/mL) or, if viral load data was unavailable, being lost to follow-up in clinical records or self-reporting being out of care. A deeper dive into the data identified several key factors associated with this disengagement:
- Age: Younger women struggle more with care engagement.
- Disclosure: Keeping HIV status secret hinders care.
- First-Time Mothers: New moms with existing HIV diagnoses need extra support.
The Postpartum Retention Gap
Recent research identifies postpartum retention in HIV care as essential for viral suppression and prevention of vertical transmission. A 2025 study defined adequate retention during the first postpartum year as two HIV care visits at least 90 days apart and focused on factors associated with that outcome. Clinical guidance also highlights postpartum depression, future pregnancies, and infant care as considerations in follow-up. Other recent work describes low postnatal retention and associated viral suppression among pregnant people living with HIV.
Where Implementation Falls Short
Postpartum HIV programs may not reach everyone consistently, particularly when care becomes harder to maintain after delivery. The reasons can differ across settings and may include service disruptions, competing postpartum demands, or weak connections between services. These limitations suggest that program coverage should not be treated as equivalent to sustained engagement. The available evidence supports cautious interpretation rather than a single explanation for every gap.
Different Settings, Shared Challenges
Postpartum HIV care outcomes can vary across countries, health systems, and study populations. Comparisons are difficult when interventions, definitions of retention, and outcome measures are not standardized. A meaningful comparison therefore needs to distinguish differences in program design from differences in access or patient circumstances. Broad conclusions should remain tentative when comparable evidence is limited.
Turning Insights into Action: Strengthening PMTCT Programs
The Tanzanian study underscores the need for comprehensive support systems within PMTCT programs. Comprehensive counseling on HIV disclosure, alongside community-based stigma reduction programs, is essential to create a supportive environment for people living with HIV. This encourages open communication and reduces the isolation that can hinder care engagement.
Beyond Existing Prevention Tools
Eliminating HIV transmission through breastfeeding in high-incidence settings will require urgent evaluation and implementation of additional preventive biomedical strategies. This priority extends prevention beyond pregnancy and delivery into the postnatal period. The emphasis on high HIV prevalence and incidence settings reflects the need to adapt prevention strategies to the level of ongoing transmission risk.
Designing the Next Phase
Future progress will likely depend on maintaining HIV care after pregnancy rather than focusing only on transmission prevention before birth. Further work may need to test models that make postpartum follow-up easier to access and more continuous. Research should also clarify which approaches work best in different health-system settings. These priorities remain areas for evaluation rather than settled conclusions.
Care Beyond the Clinic
Evidence from The Lancet HIV indicates that among women who had a pregnancy, engagement in HIV care increased during and after pregnancy compared with before pregnancy. This pattern does not eliminate the risk of later disengagement, but it shows that pregnancy can be a period of stronger connection to care. Other reports describe disruptions in service delivery, reduced access, and increased risks for mothers and infants. Together, these findings point to the importance of resilient, integrated services.
Retention in Women's Lives
A prospective cohort study of 200 HIV-infected pregnant women receiving PMTCT services in Tanzania's Kilimanjaro region found that about one-fifth had indicators of poor HIV care engagement six months after delivery. Research on women using PMTCT services has described challenges that affect service use and emphasized the need for an enabling environment. A separate retrospective study followed retention across the first month of antenatal care, pregnancy, and the postpartum period during the first year of Option B+ in Tanzania. These findings show why postpartum care must account for women's lived circumstances across the entire care cascade.
Women presenting to antenatal care with an established HIV status require targeted support during the crucial period surrounding childbirth, particularly those pregnant for the first time. This may involve peer mentoring, enhanced education about the importance of consistent care, and proactive follow-up to address any challenges they may face.
By addressing these specific needs, PMTCT programs can improve care engagement, leading to better health outcomes for mothers and their children, and ultimately contributing to the goal of an AIDS-free generation. The lesson from this article provides an opportunity to reassess, improve communication, reduce the stigma, and proactively support new mothers who have known their status, but need encouragement through education and community in a critical moment of their lives.