Tag Archives: South Africa

Late-breaking EGPAF-Funded Study on the Effects of TB Vaccine on HIV-Exposed, Breastfeeding Infants

By Robert Yule

Today, Dr. Heather Jaspan – a recipient of an EGPAF Pediatric HIV Vaccine Program Grant – released late-breaking results from her study at the International AIDS Conference.

The study investigated whether early administration of the Bacille Calmette-Guerín (BCG) vaccine for tuberculosis could be associated with an increased risk of HIV infection for HIV-exposed, breastfed infants in South Africa.

Dr. Heather Jaspan presenting her late-breaker study results.

Dr. Jaspan presents the results of her study and their implications below:

Bacille Calmette-Guerín (BCG) vaccine is given to infants at birth in high Tuberculosis (TB) burdened areas such as Southern Africa to protect them from severe forms of TB.

BCG given to monkeys causes immune cells to be active and replicate faster. HIV preferably infects cells that are actively replicating and have the HIV receptors CD4 and CCR5 on their surface. People who are frequently exposed to HIV yet remain negative have lower numbers of these HIV target cells in their blood.

We hypothesized that the routine immunization of neonates with BCG contributes to generalized immune activation in HIV-exposed infants, resulting in increased HIV target cells and increased risk for HIV transmission via breastfeeding.

We randomly assigned HIV-exposed and uninfected newborns to BCG vaccination at birth versus at 8 weeks of age. We determined the proportion of HIV target cells (activated CD4+CCR5+ cells).

Babies in the early BCG group had significantly higher HIV target cells in their blood than those in the delayed arm. This difference persisted at 8 weeks, despite immune stimulation from routine immunizations at 6 weeks in all babies.

No other cells were activated and no other markers of inflammation increased, suggesting the effect of BCG is isolated to CD4 T cells. Therefore BCG vaccination may increase the risk of HIV infection for HIV-exposed, breastfed infants.

However, other results not presented today show that infants with higher target cell activation had better responses to tetanus vaccine given at 6 weeks of age. This suggests that, in addition to protection against severe TB, BCG may have other benefits for HIV-exposed infants.

Therefore, the potential risks and benefits of BCG need further evaluation and investigation.

Our results can inform policy for the optimal timing of BCG vaccination for HIV-exposed infants, and have implications for the use of related vaccines – such as live, weakened bacterial vaccines – as potential future HIV vaccine strategies for newborns.

Dr. Heather Jaspan is a Senior Lecturer at the University of Cape Town and a Senior Scientist at Seattle BioMedical Research Institute.

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Filed under Advocacy, EGPAF, IAC 2012, Pediatric Treatment, PMTCT, Research, South Africa

mHealth in HIV/AIDS Programs: Exploring its Impact

By Michelle Betton

mHealth (mobile health technology) continues to be a big theme at this year’s International AIDS Conference. Wednesday morning, representatives from the Elizabeth Glaser Pediatric AIDS Foundation, Cell Life, the International HIV/AIDS Alliance, and the mHealth Alliance discussed various mobile technology interventions in HIV and AIDS programs.

EGPAF’s Dr. Apolinaire Tiam from Lesotho

mHealth is currently being used for many different interventions, including education and awareness, supply chain management, training for health workers, and monitoring and evaluation. The work of the panel participants focused on HIV/AIDS interventions in South Africa, Kenya, and Lesotho.

Dr. Peter Benjamin of Cell Life described the work of his organization, which uses technology to improve health and to meet social challenges. Cell Life works in 10 countries in Africa, primarily in South Africa, creating open source eHealth (electronic health) technology. Their products are used in social and behavior change communications, health systems strengthening, and policy amongst other topics.

Caricia Catalani of InSTEDD presented a literature review that delved into the question of whether or not evidence exists proving that mHealth is effective. From her findings (based on 62 articles focused on HIV/AIDS program studies), it remains unclear whether or not mHealth is effective overall in combating HIV/AIDS barriers. Several interventions have been quite effective, such as those focused on youth, community health workers, appointment and adherence reminders, and TB care, while others have not shown conclusive evidence of effectiveness. Catalani stressed that increasing local and end user development of mHealth technologies would likely increase the usefulness and effectiveness of these interventions.

Following on Caricia’s presentation, Evelyn Kibuchi of the Kenya AIDS NGOs Consortium (KANCO) described how a mapping system of facilities and clinics across regions makes facilitation and referral of services easier. Consortium member organizations enter their location and contact information into a database that then shows which services are provided in a given region, and exactly where. This makes it easier for clinics to refer clients if necessary, and helps clients facilitate transportation. In future, KANCO intends to begin sending SMS messages with information on services locally available. There is also the possibility of clients finding and receiving home-based care based on organizations in their vicinity.

EGPAF’s own Dr. Appolinaire Tiam discussed the impact of 3G technology and laptops in Lesotho. Because of Lesotho’s mountainous landscape, HIV test results can take up to 12 weeks to return to families. The Foundation’s Lesotho program acquired laptops with 3G technology for district clinical coordinators, allowing the program to receive digital lab results and send them to families in four weeks instead of 12. Tiam noted that, before the 3G-capable laptops, 55 percent of children who waited for more than two months for HIV test results died before receiving then. With 3G technology in clinics, child deaths have decreased to 5 percent.

While evidence is still inconclusive and barriers still exist to optimal effectiveness of mHealth interventions, there is some evidence that mHealth can have a considerable impact on the health of those affected by HIV/AIDS.

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Filed under EGPAF, Kenya, Lesotho, mHealth, South Africa

Upcoming EGPAF Session: Overcoming Barriers to Implementing Global Plan

By Robert Yule

Join EGPAF, mothers2mothers, Johnson & Johnson, and our other partners at this upcoming session on overcoming implementation barriers to the Global Plan.

This fast-paced session – moderated by Global Post’s John Donnelly – will feature people working on the front lines of program implementation from high-burden countries and representing various implementing organizations. Each presenter will raise a specific challenge, explain how it was addressed, describe the result, and share what is being done next.

The audience will have the opportunity to interact with presenters for further discussion of implementation barriers and solutions.

“Eliminating Pediatric AIDS and Keeping Mothers Alive from an Implementation Perspective – Best Practices, Programmatic Barriers, and Bottlenecks in the Field”
Sunday, July 22, 1:30 – 3:30 PM
Mini Room 1

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Filed under Global Plan, Implementation, India, Kenya, Lesotho, Malawi, PMTCT, Rwanda, South Africa, Swaziland, Tanzania, Zambia, Zimbabwe