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Seroepidemiological Study of Dengue Virus Infection Suspected Cases in Burkina Faso

Journal of Biosciences and Medicines 2023年第1期11卷 47-56页

作者： kima donatien Yeri Esther Hien Sawadogo Salam Nebié K. Yacouba Ilboudo P. Denise Abdoul Rahamani Nikièma Diallo Mariam Kafando Eléonore Yves Traoré Université Joseph Ki-Zerbo Ouagadougou Burkina Faso Centre Hospitalier Universitaire Pédiatrique Charles de Gaulle Ouagadougou Burkina Faso Laboratoire de Biochimie et d’Immunologie Appliquée (LaBIA) Université Joseph Ki-Zerbo Ouagadougou Burkina Faso Université de Fada N’Gourma Fada N’Gourma Burkina Faso Institut de Recherche en Science de la Santé (IRSS) Ouagadougou Burkina Faso

Dengue fever is a mosquito-borne disease caused by four related but antigenically distinct dengue viruses. In the last half-century, the prevalence of dengue fever has increased dramatically (up to 30%) worldwide, especially in Sub-Saharan Africa. In Burkina Faso, the last dengue epidemic occurred in 2016, and the epidemiological situation is still poorly documented at the national level. Therefore, the present study aimed to conduct a sentinel seroepidemiology of suspected dengue virus infections from 2017 to 2020 at Charles de Gaulle University Pediatric Hospital Center of Ouagadougou. This investigation was designed to be a descriptive and analytical study. Patients with suspected cases of dengue fever were recruited from January 2017 to December 2020 during general medicine consultation and referred to Charles de Gaulle University Pediatric Hospital Center of Ouagadougou for the serological diagnosis of dengue. Venous blood was collected in dry or EDTA tubes and tested for DENV NS1 antigen, anti-dengue IgM, and anti-dengue IgG using SD Bioline Dengue Duo Rapid Detection Kit (Standard Diagnostic Inc., Korea). A total of 3400 blood samples from clinically suspected dengue cases were analyzed, of which 1784 (52.5%) were males, and 1616 (47.5%) were females. Among the 3400 patients included in the study, 661 (19.4%) were tested at least positive for NS1 antigen, anti-dengue IgM or anti-IgG. Among them, individuals positive for IgG suggesting past dengue virus infection were found in more than a third of 262 (7.7%) of the cases. Approximately, 80.0% (2705/3400) dengue suspected cases and 85.5% (341/399) early or primary dengue infections were recorded in the last four months of the study (September to December 2020), with a peak in mid-October and mid-November. There was no statistically significant difference in seroprevalence between males and females (p = 0.7), but an increasing seropositivity trend with age, from 11.6% for the patient under 5 years group to 39.7%

关键词： Dengue Seroepidemiology Ouagadougou Burkina Faso

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Incidence of Sickle Cell Disease and Other Hemoglobinopathies in Burkina Faso: Results of a Five-Year Systematic Neonatal Screening (2015-2019) in Four Urban Hospitals

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Open Journal of Blood Diseases 2022年第4期12卷 87-97页

作者： Salam Sawadogo Koumpingnin Nebie donatien kima Hélène Traore Savadogo Jean De Dieu Sanou Dieudonné Ouedraogo Paul Ouedraogo Hyacinthe Zamane Abdoulaye Ndiaye Eléonore Kafando University Joseph Ki-Zerbo Ouagadougou Burkina Faso Hematology Intervention Group Ouagadougou Burkina Faso Sanou Souro Teaching Hospital Bobo-Dioulasso Burkina Faso Schiphra Protestant Hospital Ouagadougou Burkina Faso Saint-Camille Hospital of Ouagadougou Ouagadougou Burkina Faso Yalgado Ouedraogo Teaching Hospital Ouagadougou Burkina Faso

Hemoglobinopathies, mainly Sickle cell disease (SCD), are the most common monogenic disorders in Africa. In Burkina Faso, data on these diseases are scarce, mainly hospital-based in Ouagadougou and its surroundings. In order to assess the incidence and allelic frequencies of the main hemoglobinopathies in newborns in Burkina Faso, we conducted a cross-sectional study from 2015 to 2019 in four hospitals. The study included babies of both sexes, regardless of ethnic group and parents’ hemoglobin status. It was a newborn screening and hemoglobin variants were detected using isoelectric focusing on cord blood samples and confirmed using hemoglobin electrophoresis by high-performance liquid chromatography. The proportions and cumulative incidences of the different hemoglobinopathies were computed. Hardy-Weinberg equilibrium law was applied to calculate genotypic and allelic frequencies. The significant level was p < 0.05. Out of 11,337 newborns included, 47.8% were males and 60.2% were from Bobo-Dioulasso. Abnormal hemoglobin was found in 27.1%, representing a cumulative incidence of 1:4 newborns. The incidence of SCD was 1.9% (1:53 newborns) with 27.9% of homozygous SS. Homozygous CC and compound heterozygous Cβ-Thalassemia accounted for 1.1%. SCD cases were 1.51 times higher in Bobo-Dioulasso (OR = 1.51;95% CI [1.09 - 2.10]: p = 0.013). The observed genotype frequencies were significantly different from the expected ones (p 0.001). The βS and βC alleles represented 5.1 and 9.9%, respectively. This study showed a high incidence of hemoglobinopathies. Such results raise the question of control strategies for these hemoglobinopathies in our country.

关键词： Abnormal Hemoglobin β-Globin Gene Newborn Screening Isoelectric Focusing

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A Multifaceted Undertaking

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ChinAfrica 2024年第1期16卷 34-35页

作者： donatien NIYONZIMA 不详

Situated in the tranquil landscape of Xiamen’s Tong’an District,Lianhua Village exemplifies China’s commitment to balanced *** village’s transformative journey reveals the profound impact of the revival of rural c... 详细信息

关键词： Xiamen landscape sugar

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A Celebration of Diversity

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ChinAfrica 2024年第2期16卷 50-52页

作者： donatien NIYONZIMA Chuxiong Yi Autonomous Prefecture

What could be a better way to celebrate the New Year for an ethnic minority region in a mountainous area than a splendid display of the colour elements of its culture to global audience?Chuxiong Yi Autonomous Prefectu... 详细信息

关键词： mountainous southwest culture

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Dynamic Development African envoy provides firsthand account of China’s laudable achievements

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ChinAfrica 2024年第8期16卷 36-37页

作者： donatien NIYONZIMA 不详

Rwandan Ambassador to China James Kimonyo has played a pivotal role in strengthening the bilateral relationship between Rwanda and China.

关键词： China. strengthening Dynamic

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Connecting Through Cyberspace Xiamen forum puts spotlight on deepening China-Africa media cooperation through Internet

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ChinAfrica 2024年第5期16卷 30-31页

作者： donatien NIYONZIMA 不详

In an era of connectivity and digital innovation,the China-Africa relationship stands out as a stimulus for international cooperation in the field of the Internet and media cooperation.

关键词： Internet media deepening

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Chuxiong sur le podium

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中国与非洲（法文版） 2024年第2期16卷 50-52页

作者： donatien NIYONZIMA 不详

Quol de mieux pour célébrer le Nouvel An qu'une magnifique exposition des richesses culturelles d'un paysàminoritéethnique,nichédans une région montagneuse,àla vue du monde entier?C'est la démarche entreprise ... 详细信息

关键词： des pour culture

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Cyberconfluence Le Forum de Xiamen illumine les progrès de la coopération médiatique sino-africaine sur Internet

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中国与非洲（法文版） 2024年第5期16卷 30-31页

作者： donatien NIYONZIMA 不详

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Building Bridges Over Cyber Divide

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ChinAfrica 2024年第7期16卷 28-29页

作者： GE LIJUN 不详

During the Two Sessions of 2024,the emergence of an innovative vision for the economy was at the heart of the debates,with an emphasis on high-quality *** approach is based on new quality productive forces and the ris... 详细信息

关键词： forces development. innovative

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Embryonic and Larval Development of Reciprocal Crosses between Clarias gariepinus (Burchell, 1822) and Clarias jaensis (Boulenger, 1909) in West Cameroon

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Agricultural Sciences 2024年第8期15卷 848-863页

作者： Justin Ntsoli Félix Meutchieye Algrient Nana Towa donatien Bishakabalya Lwendje Minette Eyango Tabi Tomedi Biotechnology and Bioinformatics Research Unit Department of Animal Science University of Dschang FASA Dschang Cameroon Department of Forestry Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Institute of Fisheries and Aquatic Sciences of the University of Douala Douala Bassa

Establishing intraspecific breeding and hybridization programs and determining genetic variability are two important issues for aquaculture. However, interspecific hybridization to improve growth and feeding efficiency is limited. For this purpose, the embryonic and larval development of reciprocal crosses of Clarias gariepinus (Burchell, 1822) and Clarias jaensis (Boulenger, 1909) were studied under laboratory conditions. The fertilization rate varied from 63.33% to 92%, while the hatching rate ranged from 55.68% to 76% with the highest value in hybrids ♀Cg × ♂Cj. Crosses between ♀Cj × ♂Cj, ♀Cg × ♂Cj and ♀Cj × ♂Cg had embryonic stages similar to those of the pure sib ♀Cg x ♂Cg. All crosses, however, had different timing for the various embryological stages. Hatching occurred at 32 h 15 min and 38 h for ♀Cj × ♂Cj and ♀Cj × ♂Cg, and 23 h and 23 h 30 min, respectively, for ♀Cg × ♂Cg and ♀Cg × ♂Cj. However, both crosses produced viable larvae until the first external feeding. The external morphological features of the larvae were completely formed by the 10th day after hatching. The body forms of the crosses at this time were indistinguishable from the pure sib. This study thus laid the groundwork for further comparative studies on hybrid performance and characterization.

关键词： Embryonic Development Larval Development Interspecific Hybridization Clarias gariepinus Clarias jaensis

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