Suivi de l’enfant de mère infectée par le VIH dans le cadre de la prévention de la transmission mère–enfant à Cotonou (Bénin)

[Use of dried blood spots in early diagnosis of HIV-1 infection in children born to HIV-infected mothers as part of the prevention of mother-to-child transmission in Benin]

The goal of this study was to evaluate using the molecular diagnosis, infection transmission rate of HIV in children born to HIV-1 positive mothers as part of the prevention of mother-to-child transmission (PMTCT) in Benin. The sample consisted of 524 dried blood spots (DBS) of children born to HIV-1 positive mothers, from 30 sites (PMTCT) taken between October 2009 and June 2010. The diagnosis of HIV-1 was performed by the qualitative detection of viral nucleic acids (RNA and DNA) in DBS on filter paper using the Abbott RealTime(®) HIV-1 Qualitative assay. We found that 51 DBS were positive (9.7%) and 473 were negative (90.3%). The failure rate of PMTCT among 420 mothers who received antiretroviral prophylaxis was 6.7% (28/420). This failure rate was significantly higher among children born to infected mothers on antiretroviral monotherapy than on triple therapy (HAART). The results of our study enrich the data in the literature on highly active antiretroviral chemoprophylaxis to reduce the transmission of HIV-1 from mother to child.

[Fate of children born to HIV positive mothers followed in the context of preventing mother-to-child transmission of HIV in Togo. Study of 1042 infants]

The purpose of this study is to analyze the fate of children born to HIV-positive mothers and to determine the impact of feeding options on the HIV status of the children in preventing mother-to-child transmission sites (PMTCT) in Togo. It was a retrospective and descriptive study, focused on medical files of 1042 children of both sexes aged from 0 to 59 months born to HIV-positive mothers and registered in the PMTCT sites between January 2004 and December 2008. Our study was conducted in seven PMTCT sites located in four of the six health regions in the country. We analyzed a total of 1042 medical files in seven PMTCT sites selected. The majority of children were born vaginally (77.4%). Antiretroviral prophylaxis most used in the mothers and/or the children was nevirapine in 86% of the cases. Breastfeeding (49%) was dominated by milk substitutes (50%). Globally, dropout rate was 52.2% (525), with 44.9% (408) at six months and 65.09% (483) at 12 months. At 12 months, 196 of 742 children (26.4%) had their retroviral serology. Among them, we have 5.6% overall rate of HIV infection. The transmission rate in the group of children breastfed was 5.9% (six children infected out of 102) and 8.5% in the group of children fed by formula milk (seven children out of 82). Death occurred in half of the cases (8 of 16) during the first two months of life. Follow-up was the major issue in monitoring children born to HIV-infected mothers. The HIV transmission rate is very high, irrespective of the feeding method.

Effective program against mother-to-child transmission of HIV at Saint Camille Medical Centre in Burkina Faso

The present research was aimed to prevent mother-to-child transmission of HIV; to use RT-PCR in order to detect, 6 months after birth, infected children; and to test the antiretroviral resistance of both children and mothers in order to offer them a suitable therapy. At the Saint Camille Medical Centre, 3,127 pregnant women (aged 15-44 years) accepted to be enrolled in the mother-to-child transmission prevention protocol that envisages: (i) Voluntary Counselling and Testing for all the pregnant women; (ii) Antiretroviral therapy for HIV positive pregnant women and for their newborns; (iii) either powdered milk feeding or short breast-feeding and RT-PCR test for their children; (iv) finally, pol gene sequencing and antiretroviral resistance identifications among HIV positive mothers and children. Among the patients, 227/3,127 HIV seropositive women were found: 221/227 HIV-1, 4/227 HIV-2, and 2/227 mixed HIV infections. The RT-PCR test allowed the detection of 3/213 (1.4%) HIV infected children: 0/109 (0%) from mothers under ARV therapy and 3/104 (2.8%) from mothers treated with Nevirapine. All children had recombinant HIV-1 strain (CRF06_CPX) with: minor PR mutations (M36I, K20I) and RT mutations (R211K). Among them, two twins had Non-Nucleoside Reverse Transcriptase Inhibitor mutation (Y18CY). Both mothers acquired a major PR mutation (V8IV), investigated 6 months after a single-dose of Nevirapine. Prevention by single-dose of Nevirapine reduced significantly mother-to-child transmission of HIV, but caused many mutations and resistance to antiretroviral drugs. Based on present study the antiretroviral therapy protocol, together with the artificial-feeding, might represent the ideal strategy to avoid transmission of HIV from mother-to-child.