La pratique contraceptive moderne chez les adolescentes au Bénin: Tendances, déterminants et perspectives / Modern contraceptive use among adolescents in Benin: trends, determinants and prospects.

RésuméLa pratique contraceptive moderne augmente lentement parmi les jeunes générations au Bénin. La présente étude analyse les tendances, les déterminants du recours aux contraceptifs et leurs mécanismes d'actions chez les adolescentes. Les approches socio-écologique et intersectionnelle ont été adoptées, avec une méthode d'étude mixte portant sur les adolescentes de 15 à 19 ans sexuellement actives et non enceintes.

Review of instrumental texture measurements as phenotypic tool to assess textural diversity of root, tuber and banana food products.

Roots, tubers and bananas (RTBs) contribute immensely to food security and livelihoods in sub-Saharan Africa, Asia and Latin America. The adoption of RTB genotypes in these regions relies on the interplay among agronomic traits, ease of processing and consumer preference. In breeding RTBs, until recently little attention was accorded key textural traits preferred by consumers.

Seroepidemiology of toxoplasmosis in pregnant women and detection of infection acquired during pregnancy in Cotonou, Benin.

Assessing the prevalence of toxoplasmosis in pregnant women and the associated risk factors is the first step in defining policy for the prevention of congenital toxoplasmosis in a given population. An epidemiological study was conducted during prenatal consultations at the CHU-MEL of Cotonou (Benin) between September 2018 and April 2021 and recruited 549 pregnant women to determine the seroprevalence and potential factors associated with Toxoplasma gondii infection. Toxoplasma gondii IgG/IgM antibodies were detected using an enzyme-linked fluorescence assay (ELFA) technique, an IgG avidity test and an IgG/IgM comparative Western blot to diagnose the maternal toxoplasmosis serological status, the possibility of an infection acquired during pregnancy and congenital infection, respectively.

Durability of the deltamethrin-treated polypropylene long-lasting net LifeNet® in a pyrethroid resistance area in south western Benin: A phase III trial.

Background: Long-lasting insecticidal bed nets (LLINs) are a key measure for preventing malaria and their evaluation is coordinated by the World Health Organization Pesticide Evaluation Scheme (WHOPES). LifeNet® was granted WHOPES time-limited interim recommendation in 2011 after successful Phase I and Phase II evaluations. Here, we evaluated the durability and community acceptance of LifeNet® in a Phase III trial from June 2014 to June 2017 in Benin rural area.

Genome-wide association studies reveal novel loci associated with pyrethroid and organophosphate resistance in Anopheles gambiae and Anopheles coluzzii.

Resistance to insecticides in Anopheles mosquitoes threatens the effectiveness of malaria control, but the genetics of resistance are only partially understood. We performed a large scale multi-country genome-wide association study of resistance to two widely used insecticides: deltamethrin and pirimiphos-methyl, using sequencing data from An. gambiae and An.

Contrasting effects of polysaccharide components on the cooking properties of roots, tubers and bananas.

Background: Consumer preferences for boiled or fried pieces of roots, tubers and bananas (RTBs) are mainly related to their texture. Different raw and cooked RTBs were physiochemically characterized to determine the effect of biochemical components on their cooking properties.

Results: Firmness in boiled sweetpotato increases with sugar and amylose contents but no significant correlation was observed between other physicochemical characteristics and cooking behaviour.

Presentation and use of a new diagram to determine the facies and the origins of water: The 3rd Parfait-Hounsinou diagram.

To determine the origin of groundwater mineralization, it is often necessary to produce Piper or Schoeller-Berkaloff or Stiff or Durov diagrams, to calculate the Revelle index or the basic exchange index. In this new method, the Reports , , , and are represented by 5 points on the 3rd Parfait-Hounsinou diagram which makes its interpretation faster than the interpretation of the Scholler-Berkaloff and Stiff diagrams which have 7 and 6 representative points respectively. The 3rd Parfait-Hounsinou diagram is more precise and gives more information than the diagrams of Piper, Scholler-Berkaloff and Stiff on the origin of the mineralization of water.

The 1 method Parfait-Hounsinou used for the detection of saltwater intrusion in groundwater.

This study presents the 1 method Parfait-Hounsinou, a method that makes it very easy to detect saltwater intrusion in groundwater. The method relies on the commonly sampled ion concentrations. This method involves several steps, namely: Chemical analyzes to determine the concentrations of majors ions and TDS in groundwater, production and study of the spatial distribution of chemical parameters in groundwater (TDS, Cl…), delimitation of a probable area of saltwater intrusion in groundwater and the production and the study of spie chart where area of pie slices represents ions contents or group of ions content in the groundwater sample of the probable area of the saltwater intrusion in groundwater and radius length represents the Relative Content Index.

The 2nd method Parfait-Hounsinou used to determine the overall water quality.

The 2nd method Parfait-Hounsinou makes it possible to note the physico-chemical quality and the microbiological quality of water by two alphabetical letters representing respectively the Chemical Water Quality Index (CWQI) and the Microbiological Water Quality Index (MWQI). The steps of using this method are the measurement of the physico-chemical and microbiological parameters of the water samples, the calculation of the CWQI and MWQI, the deduction of the overall quality of the water samples and the construction and then the study of the 2nd Parfait-Hounsinou diagram which is 2 particulars diagrams of Spie chart use to show the detailed chemical quality of the water samples. We applied this method to the groundwater of the municipality of Abomey-Calavi in Benin and then we compared this method to the water quality assessment methods that are often the most used.

Genome-wide association studies reveal novel loci associated with pyrethroid and organophosphate resistance in s.l.

Resistance to insecticides in mosquitoes threatens the effectiveness of the most widespread tools currently used to control malaria. The genetic underpinnings of resistance are still only partially understood, with much of the variance in resistance phenotype left unexplained. We performed a multi-country large scale genome-wide association study of resistance to two insecticides widely used in malaria control: deltamethrin and pirimiphos-methyl.

Measuring entomological parameters before implementing a study on asymptomatic carriers of Plasmodium falciparum in the Zè District in southern Benin.

Background: The objective of this study was to estimate malaria transmission and insecticide resistance status in malaria vectors in Adjrako village from Zè District in Southern Benin. The present study was carried out prior to investigations on infectivity of blood from asymptomatic carriers of Plasmodium falciparum to malaria vector mosquitoes.

Methods: Human landing collections (HLCs) were performed in Adjrako village during the rainy season (September-November 2021).

Micronutrient intake of children in Ghana and Benin: Estimated contribution of diet and nutrition programs.

We estimated how micronutrient needs of young children, aged 6-24 months were covered by the standard (traditional) diets in Ghana and Benin, and the contributions of partial breastfeeding and national nutrition programs aimed at improving micronutrient status to overall micronutrient intakes. Estimates of micronutrient intake from standard diets were based on previous surveys, using the food composition table of West Africa (INFOOD). Recommended micronutrient intakes were based on World Health Organization recommendations.

Factors Associated With Home Births in Benin and Mali: Evidence From the Recent Demographic and Health Surveys.

Introduction: Identifying and understanding the factors associated with homebirths can contribute to improving maternal and child health and achieving the Sustainable Development Goals (SDGs). This study aimed to perform a comparative analysis of the factors associated with homebirths in Benin and Mali.

Method: This study is based on the most recent data from the Demographic Health Surveys conducted in Mali and Benin in 2018.

Understanding Hand Hygiene Behavior in a Public Hospital in Benin Using the Theoretical Domain Frameworks: The First Step for Designing Appropriate Interventions.

Background: Hand Hygiene (HH) is widely recognized to be one of the most successful and cost-effective measures for reducing the incidence of healthcare-associated infections (HAIs). The hand hygiene behavior of hospital healthcare workers (HCWs) is not well-documented in Benin. Therefore, Theoretical Domains Framework (TDF) was used to identify the behavioral determinants that may impact HCWs' hand-hygiene compliance in a public hospital.

Carbapenem-Resistant Organisms Isolated in Surgical Site Infections in Benin: A Public Health Problem.

An alarming worldwide increase in antimicrobial resistance is complicating the management of surgical site infections (SSIs), especially in low-middle income countries. The main objective of this study was to describe the pattern of carbapenem-resistant bacteria in hospitalized patients and to highlight the challenge of their detection in Benin. We collected pus samples from patients suspected to have SSIs in hospitals.

[Relationship between occupational exposure of waste manipulators of electrical and electronic equipment and respiratory problems in Bamako in 2019].

Introduction: waste electrical and electronic equipment (WEEE), with its health and environmental issues, has become a public health problem exposing workers to toxic compounds causing respiratory problems.

Objective: To study the relationship between professional exposure to WEEE and the occurrence of respiratory problems in Bamako in 2019.

Material And Methods: This was a 6-month cross-sectional, analytical study carried out in the city of Bamako in 2019 and involved 159 WEEE manipulators.

Molecular and epidemiological characterization of recurrent Mycobacterium ulcerans infections in Benin.

Background: Buruli ulcer is a neglected tropical disease caused by Mycobacterium ulcerans, an environmental mycobacterium. Although transmission of M. ulcerans remains poorly understood, the main identified risk factor for acquiring Buruli ulcer is living in proximity of potentially contaminated water sources.

Comparison of Micronutrient Intervention Strategies in Ghana and Benin to Cover Micronutrient Needs: Simulation of Bene-Fits and Risks in Women of Reproductive Age.

Overlapping micronutrient interventions might increase the risk of excessive micronutrient intake, with potentially adverse health effects. To evaluate how strategies currently implemented in Benin and Ghana contribute to micronutrient intake in women of reproductive age (WRA), and to assess the risk for excess intakes, scenarios of basic rural and urban diets were built, and different on-going interventions were added. We estimated micronutrient intakes for all different scenarios.

Human biting rhythm of Anopheles gambiae Giles, 1902 (Diptera: Culicidae) and sleeping behaviour of pregnant women in a lagoon area in Southern Benin.

Objective: In the framework of EVALMOUS study aiming to assess the use and effectiveness of mosquito nets by pregnant women and other members of their household in a lagoon area in southern Benin, the behaviour of pregnant women relative to the time they go to bed using the net were recorded. Malaria vectors biting rhythm, Plasmodium falciparum infection and insecticide resistance genes in malaria vectors were also determined.

Results: Overall, 3848 females of Anopheles gambiae s.

First detection of a plasmid-encoded New-Delhi metallo-beta-lactamase-1 (NDM-1) producing Acinetobacter baumannii using whole genome sequencing, isolated in a clinical setting in Benin.

Background: Carbapenem-resistant Acinetobacter baumannii is considered a top priority pathogen by the World Health Organization for combatting increasing antibiotic resistance and development of new drugs. Since it was originally reported in Klebsiella pneumoniae in 2009, the quick spread of the bla gene encoding a New-Delhi metallo-beta-lactamase-1 (NDM-1) is increasingly recognized as a serious threat. This gene is usually carried by large plasmids and has already been documented in diverse bacterial species, including A.

Antimicrobial resistance in hospitalized surgical patients: a silently emerging public health concern in Benin.

Background: Surgical site infections are related to high morbidity, mortality and healthcare costs. Because the emergence of multidrug-resistant bacteria in hospitals is becoming a worldwide challenge for surgeons who treat healthcare-associated infections, we wished to identify the causative agents involved in these infections and the rate of multidrug-resistant bacteria in six public hospitals in Benin.

Methods: Using standard microbiological procedures, we processed pus specimens collected from obstetrics and gastrointestinal surgery wards.