Affinity Health, a leading provider of high-quality health cover, is shining a spotlight ahead of World AIDS Day (1 December) on the vital issue of HIV in babies, specifically the prevention of mother-to-child transmission (MTCT).
According to the latest World Health Organization (WHO) data, an estimated 1.1 million pregnant women were living with HIV globally in 2024, and approximately 84% of these women received antiretroviral drugs to prevent MTCT.
“Every child deserves the best possible start in life. Preventing mother-to-child transmission of HIV is one of the greatest public health achievements of our time. With proper care, we can move closer to an HIV-free generation,” says Murray Hewlett, CEO of Affinity Health.

The Three Critical Periods of Transmission

Transmission can occur at three main stages:

• During pregnancy (in utero), especially late in pregnancy, if the viral load is high.
• During labour and delivery (intrapartum), the period from membrane rupture to delivery carries risk.
• Postnatally, via breastfeeding, in settings where safe alternative feeding is difficult, or if mixed feeding is used, the risk increases.

Core Prevention Strategies

Here are the primary medical interventions that reliably reduce MTCT:

• Maternal antiretroviral therapy (ART): The WHO highlights that pregnant women living with HIV must be on lifelong ART. With high coverage, MTCT rates can fall to under 2–5%.
• Infant prophylaxis: Babies born to mothers with HIV may receive antiretroviral drugs shortly after birth to further reduce risk.
• Good obstetric-care management: Ensuring skilled delivery in a facility, monitoring maternal viral load, minimising prolonged rupture of membranes, and avoiding invasive procedures if possible.
• Breastfeeding guidance: In settings where safe formula feeding is not feasible, mothers living with HIV are advised to continue breastfeeding for at least 12 months (and up to 24 months) while on ART, because the benefit of breastfeeding outweighs the risk when proper support is in place.
• Integration of services: The WHO’s “triple elimination initiative” (MTCT of HIV, syphilis and hepatitis B) urges integrated maternal, newborn and child health services to deliver testing, counselling and treatment in antenatal settings.

Barriers and Real-World Challenges

Even with effective treatments available, several real-world challenges still make it difficult to prevent mother-to-child transmission of HIV. Many women start antenatal care late or not at all, which increases the risk if HIV treatment isn’t begun early. A high viral load or a weak immune system further increases the likelihood of passing the virus to the baby.
Feeding challenges also play a role: in some areas, clean water and formula may not be readily available, and mixed feeding (both breastfeeding and formula) increases the risk of transmission. Limited access to skilled healthcare workers, regular testing, and follow-up care for infants can make prevention harder. At the same time, stigma, transport costs, lack of partner support, and cultural pressures around feeding often prevent women from seeking or continuing treatment.

What Makes a Real Difference?

Several key factors are essential for preventing HIV transmission from mother to child. Early testing and diagnosis allow treatment to begin quickly, significantly reducing the risk of infection. Starting ART as soon as possible helps lower the amount of virus in the mother’s body, protecting the baby during pregnancy and birth.
Staying in care and taking treatment consistently is also vital, as stopping medication can undo progress. Babies exposed to HIV need follow-up testing at 4–6 weeks and regular monitoring so that, if infection occurs, treatment can begin immediately for the best results. Studies show that with proper care, transmission rates can drop to less than 2%. When mothers are on ART and have the appropriate support, breastfeeding is both safe and recommended, but that support must include counselling, resources, and ongoing medical guidance.

The Role of Family and Community

Preventing HIV in babies doesn’t happen at the clinic alone; it requires support from families and communities, too. When partners and relatives help mothers attend appointments, take their medication, and breastfeed safely, the chances of a healthy, HIV-free baby increase. Practical help, such as transport or childcare, makes it easier for mothers to remain in care. Just as importantly, reducing stigma and creating a supportive environment allows women living with HIV to feel comfortable seeking treatment and talking openly about their status.

What Can You Do if You are Expecting?

If you are pregnant or planning pregnancy and have HIV (or are living with a partner who has HIV), here are steps to take:

• Get tested or ensure your status is known at the earliest opportunity.
• If HIV-positive, begin ART immediately and remain in care, as viral suppression is key.
• Attend every antenatal, delivery and postnatal appointment as advised.
• Discuss feeding options with your healthcare provider, and if breastfeeding, ensure you’re on ART and supported.
• Keep your baby’s follow-up appointments for PCR testing and, if needed, early treatment.
• Tell your healthcare team about any other conditions, medications or concerns.
• Speak to your partner or a trusted support person, as shared understanding makes a big difference.
• Understand that prevention is feasible: your baby can start life HIV-free with the proper care.

Conclusion

Preventing HIV in babies is one of medicine’s greatest success stories, but it depends on consistent care throughout pregnancy, birth, and infancy. With early testing, ongoing treatment, and proper support, the risk of transmission can drop to almost zero. This World AIDS Day (1 December) is a reminder that an HIV-free generation is possible. Affinity Health provides access to expert clinicians, antenatal and postnatal care, and dedicated HIV prevention programmes to help mothers and babies stay healthy from the very start.

About Affinity Health

Affinity Health is South Africa’s leading health cover provider, offering you a range of options at affordable rates, including access to the widest national provider network. We understand the importance of having medical insurance that meets your needs, budget, and lifestyle. Our healthcare products are designed to protect you and your family when it matters the most. We strive to give our clients peace of mind and the highest standard of service. For more information, follow us on Facebook, Twitter, and Instagram.