Efficacy of an iron-fortified infant cereal to reduce the risk of iron deficiency anemia in young children in East Cameroon.

Complementary foods in Africa are often poor sources of bioavailable iron. We assessed the efficacy of iron-fortified wheat-based infant cereal (IC) to reduce the risk of iron deficiency anemia in children aged 18-59 months in Cameroon. A 6-month double-blind, cluster-randomized controlled trial was conducted in 2017 among anemic (hemoglobin 7-11 g/dl) but otherwise healthy children. In conjunction with usual diet, children received two 50 g servings/day of a standard, micronutrient-fortified IC (providing 3.75 mg iron/serving; n = 106) or the same IC without iron fortification (n = 99). Anthropometric measurements, blood sampling, and systematic deworming were performed in all children at baseline (pre-intervention), 3, and 6 months. Mean hemoglobin, ferritin adjusted for C-reactive protein (CRP), serum iron, transferrin saturation, prevalence of anemia, iron deficiency, and iron deficiency anemia as well as anthropometrics were compared between the groups at baseline, 3, and 6 months. Compared to the control group, children consuming the iron-fortified IC had significantly higher baseline-adjusted mean hemoglobin (10.0 ± 1.8 vs. 9.7 ± 1.4 g/dl, respectively; p = .023), ferritin adjusted for CRP (16.1 ± 8.3 vs. 9.5 ± 7.5 µg/L, p < .001), serum iron (14.5 ± 3.9 vs. 11.2 ± 4.4 µg/dl; p < .001), and transferrin saturation (19.0 ± 17.4 vs. 10.7 ± 12.5%; p Ë‚ .001) at 6 months. The prevalence of anemia, iron deficiency, and iron deficiency anemia at 6 months decreased by a larger extent in the iron-fortified group versus controls (all p < .01). In addition, at 6 months, children in the iron-fortified group demonstrated higher weight-for-age z-scores (p = .016) compared to the control group. Wheat-based IC fortified with 7.5 mg ferrous fumarate administered daily for 6 months improved iron and nutritional status and decreased the prevalence of iron deficiency anemia in children aged 18-59 months in Salapoumbé, Cameroon.

The Influence of Iron and Zinc Supplementation on the Bioavailability of Provitamin A Carotenoids from Papaya Following Consumption of a Vitamin A-Deficient Diet.

Iron deficiency anemia, zinc and vitamin A deficiencies are serious public health problems in Cameroon, as in many developing countries. Local vegetables which are sources of provitamin A carotenoids (PACs) can be used to improve vitamin A intakes. However, traditional meals are often unable to cover zinc and iron needs. The aim of this study was to determine the bioavailability of 3 PACs (α-carotene, ß-carotene, and ß-cryptoxanthin) in young men, who were fed with a vitamin A-free diet and received iron and zinc supplementation. Twelve healthy participants were divided into three groups and were supplemented with elemental iron (20 mg of iron fumarate), 20 mg of zinc sulfate or iron+zinc (20 mg of iron in the morning and 20 mg of zinc in the evening) for 11 d. They were given a vitamin A- and PAC-free diet from the 6th to the 11th day, followed by a test meal containing 0.55 kg of freshly peeled papaya as a source of PACs. Blood samples were collected four times successively on the 11th day (the test meal day), at T0 (just after the test meal), after 2 h (T2), after 4 h (T4) and after 7 h (T7). Ultracentrifugation was used to isolate serum chylomicrons. Retinol appearance and PAC postprandial concentrations were determined. The supplementation with zinc, iron and iron+zinc influenced the chylomicron appearance of retinol and PACs differently as reflected by retention times and maximum absorption peaks. Iron led to highest retinol levels in the chylomicron. Zinc and iron+zinc supplements were best for optimal intact appearance of α-carotene, ß-carotene and ß-cryptoxanthin respectively. Supplementation with iron led to the greatest bioavailability of PACs from papaya and its conversion to retinol.

Preventing HIV-1 transmission in breastfed infants in low resource settings: early HIV infection and late postnatal transmission in a routine prevention of mother-to-child transmission program in Yaounde, Cameroon.

OBJECTIVE: To report on overall HIV-transmission rates [early and late postnatal transmission (LPNT)] in breastfed infants born to HIV-positive women. METHODS: Mother-baby pairs in a routine prevention of mother-to-child transmission program. Promotion of exclusive breastfeeding (EBF) coupled with access to antiretroviral treatment (ART) or prevention using antiretroviral (pARV). Early infant diagnosis using HIV-RNA/PCR or HIV-DNA/PCR >6 weeks. LPNT assessed 6 weeks after weaning in infant earlier tested negative. MAIN MEASUREMENT: early HIV infection and LPNT. RESULTS: We included 285 infants for analysis; 89.5 % of mothers were receiving ART or pARV; 86% babies took daily pARV (median duration, 6 weeks). Exclusive breastfeeding (EBF) rate: 96% (median duration, 4 months). The cumulative transmission of HIV-1 was 2.8% at 8 weeks (95% confidence interval: 1.9-3.7). After weaning (abrupt 44%), 3 of 212 infants were HIV infected (1.4%). Nine-month cumulative HIV-transmission rate was 4.2% (1.5-6.9). Incidence of late postnatal HIV infection stood at 1.5/100 child-years of breastfeeding (BF). Cumulative risk of HIV transmission (8 weeks-9 months) was 1%. CONCLUSION: Both promotion of EBF and access to antiretroviral therapy contribute to lower HIV transmission in breastfed infants in low resource settings.

Efficacite de la polyvidone Iodee a 2;5 dans la prevention de l' ophtalmie neonatale a Yaounde; Cameroun

Objectif: Determiner l'efficacite de la polyvidone a 2;5 comparativement aux collyres usuels dans la prevention de l'ophtalmie neonatale a Yaounde. Materiels et methodes : Il s'agissait d'un essai clinique randomise realise dans deux formations sanitaires a Yaounde d'Octobre 2009 a Mars 2010. Cinq cent nouveau-nes dont les meres avaient donne leur consentement verbal etaient recrutes. Les donnees portaient sur les caracteristiques sociodemographiques; l'histoire obstetricale et les parametres anthropometriques du nouveau-ne. L'intervention consistait en une application oculaire a la naissance de polyvidone iodee a 2;5 ou de collyres usuels. Les nouveau-nes etaient suivis pendant trois jours a l'hopital puis par relance telephonique pour la survenue de conjonctivite. La clairance ethique etait obtenue du Comite National d'Ethique. L'analyse des donnees s'etait faite a l'aide du logiciel Epi-Info 3.5.1. Le seuil de significativite etait de 0;05. Resultats : Sur les 245 nouveau-nes du groupe polyvidone iodee a 2;5 et les 244 du groupe collyres usuels; le nombre d'ophtalmie neonatale etait identique soit 3 (1;2) respectivement (p=0;65). Le Klebsiella pneumoniae; l'Acinetobacter calcoaceticus et le Streptococcus pneumoniae etaient les germes isoles. Conclusion : L'efficacite de la polyvidone iodee a 2;5 a ete comparable a celle des collyres usuels dans la prevention de l'ophtalmie neonatale. Elle serait a recommander vu son faible prix

The frequency and magnitude of growth failure in a group of HIV-infected children in Cameroon.

BACKGROUND: Growth impairment is a major manifestation of HIV infection in children and has been implicated as a major contributor to both morbidity and mortality. This study the first to be done in this setting, was aimed at comparing the growth of HIV infected children to that of non-infected children in two referral health facilities in Yaoundé, Cameroon. METHODS: A prospective case control study was carried out on 39 HIV infected children in two referral hospitals and followed up for a period of 12 months. Anthropometric measurements were taken and the sociodemographic variables of mothers and infants noted. Thirty nine infected children (mean age 45.3 months ± 41.6 SD) were age and sex matched with 39 non-infected children (mean age 44.4 ± 40.7 months). RESULTS: Out of the 39 infected children, 26 (66.7%) had at least one of the three anthropometric indices (weight for height, weight for age, height for age) Z scores less than -2. Throughout follow-up, 20.5% of the infected children were wasted (weight to height Z score < -2) versus none in the control group, 56.4% underweight (weight for age Z score < -2) in the infected versus 2.6% in the control group, and 51.3% stunted (height for age Z score < -2) in contrast to 5.1% in the control group. CONCLUSION: This study demonstrated that wasting; underweight and stunting are common findings in HIV- infected children, thus stressing the importance of anthropometry in the routine care of these children.

The empiric use of palm kernel oil in neonatal skin care: justifiable or not?

Palm kernel oil is a vegetable oil derived from Elaeis guineensis and widely used in neonatal settings for skin care. It is a good emollient with a beneficial effect in moisturizing the skin and preventing transdermal heat and water loss. However, it's putative roles in the prevention or treatment of fatty acid defificiency is still controversial. So is its function in the improvement of neurological development from its longchain polyunsaturated fatty acids? We set out in this review to verify whether its empiric use in this context has any scientific justification and is recommendable. Although there is evidence that it has emollient and moisturizing properties necessary for softening the skin and restoring elasticity, controversy subsists on its other nutritional and neurodevelopmental properties.

Frequent failure of adolescent booster responses to tetanus toxoid despite infant immunization: waning of infancy-induced immune memory?

To define the capacity of a tetanus toxoid booster to reactivate infant-triggered immunity, anti-tetanus antibodies were assessed before and after boosting 162 adolescents and 219 children from Mfou (Cameroon). Among 63 adolescents with 3 recorded dose of infant DTP, 29/63 (46%) responded with a > or =4-fold increase of antibody titers, 35/63 (55%) reaching the 0.10UI/ml threshold. Response rates were slightly higher (62%) in children aged 10-11 years. Responders and non-responders only differed significantly in their baseline anti-tetanus antibodies. Thus, early life immune immaturity may limit the persistence of infant-induced immunity and subsequent boosters may be required for sustained protection.

Chronic disease management in Sub-Saharan Africa: whose business is it?

Public health specialists and clinicians alike agree that Humanity faces a global pandemic of chronic diseases in the 21(st) century. In this article we discuss the implications of this pandemic on another global issue, the health workforce. Because both issues are particularly acute in Sub-Saharan Africa (SSA), we will focus on this region and use Cameroon as a case in point. We first gauge the epidemic of chronic conditions in SSA. We then discuss the implications of chronic conditions for the reshaping of health systems and the health workforce. We conclude by making a strong case for the building up and strengthening the health workforce, insisting on the crucial role of nurses, their training, and involvement in chronic disease management.