2024 |
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Journal Articles |
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CABU-EICO consortium Evaluating the effect of a behavioural intervention bundle on antibiotic use, quality of care, and household transmission of resistant Enterobacteriaceae in intervention versus control clusters in rural Burkina Faso and DR Congo (CABU-EICO) Journal Article In: Trials, vol. 25, iss. 1, pp. 91, 2024, ISSN: 1745-6215. Abstract | BibTeX | Tags: {Anti-Bacterial Agents* / adverse effects, Burkina Faso / epidemiology, Democratic Republic of the Congo / epidemiology, Enterobacteriaceae*, Humans, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, PMC10821568, PubMed Abstract, Randomized controlled trial, Surveys and Questionnaires | Links: @article{nokey, BACKGROUND: Antimicrobial resistance (AMR) is a rising threat in low-resource settings, largely driven by transmission in the community, outside health facilities. Inappropriate antibiotic use is one of the main modifiable drivers of AMR. Its risk is especially high in poor resource settings, with limited diagnostic and surveillance capacities, and many informal medicine vendors determining community use. We hypothesise that to optimise community antibiotic use, especially Watch antibiotics (recommended only as first-choice for more severe clinical presentations or for causative pathogens likely to be resistant to Access antibiotics), both the supply side (medicine vendors) and the demand side (communities) should be pro-actively involved in any intervention. METHODS: In two existing demographic health surveillance sites (HDSS) in Burkina Faso and in the Democratic Republic of Congo, behavioural intervention bundles were co-created in a participatory approach, aiming to rationalise (Watch) antibiotic use and improve hygiene and sanitation practices. Bundles consisted of interactive interventions, including theatre, posters, discussions, etc. To evaluate impact, 11 of 22 clusters (a HDSS community with at least one (in)formal medicine vendor) were randomly assigned to this intervention, which will run over a year. The effect of the intervention will be evaluated by comparing outcomes before and after in intervention and control villages from a) exit interviews of clients from vendors, b) mystery patients presenting to vendors with a set of predefined symptoms, c) household interviews to assess behavioural changes related to antibiotic use, health literacy and water-sanitation-hygiene indicators. Long-term impact on AMR will be estimated by modelling changes in resistant Enterobacteriaceae carriage from repeated household surveys before, during and after the intervention in both arms. DISCUSSION: Most existing interventions aimed at improving antibiotic use focus on health care use, but in resource-limited settings, community use is highly prevalent. Previous studies targeting only providers failed to show an effect on antibiotic use. Evaluation will be done with before-after epidemiological measurements of actual prescriptions and use. If effective in reducing (Watch) antibiotic use, this would be an empowering methodology for communities, which has significant promise for long-term impact. TRIAL REGISTRATION: ClinicalTrials.gov NCT05378880 . 13 May 2022. | |||
Moussa Lingani, Assana Cissé, Abdoul Kader Ilboudo, Issaka Yaméogo, Zekiba Tarnagada Patterns of Non-influenza Respiratory Viruses Among Severe Acute Respiratory Infection Cases in Burkina Faso: A Surveillance Study Journal Article In: Influenza and other respiratory viruses, vol. 18, iss. 3, 2024, ISSN: 1750-2659. Abstract | BibTeX | Tags: Assana Cissé, Betacoronavirus, Burkina Faso / epidemiology, doi:10.1111/irv.13271, Enterovirus*, Human* / epidemiology, Humans, Infant, Influenza, MEDLINE, Moussa Lingani, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Orthomyxoviridae* / genetics, Paramyxoviridae Infections* / epidemiology, PMC10949177, pmid:38501305, Pneumonia*, PubMed Abstract, Respiratory Tract Infections* / epidemiology, Viruses*, Zekiba Tarnagada | Links: @article{Lingani2024, Background: Although influenza viruses cause only one-fifth of severe acute respiratory infections (SARI) in Burkina Faso, the other viral causes of SARI remain poorly investigated to inform clinical and preventive decision making. Methods: Between 2016 and 2019, we prospectively enrolled inpatients meeting the World Health Organization (WHO) case definition of SARI in Burkina Faso. Results of viral etiologies among inpatients tested negative for influenza using the Fast Track Diagnostics Respiratory Kits (FTD-33) were reported. Results: Of 1541 specimens tested, at least one respiratory virus was detected in 76.1% of the 1231 specimens negative for influenza virus. Human rhinoviruses (hRVs) were the most detected pathogens (476; 38.7%), followed by human adenoviruses (hAdV) (17.1%, 210/1231), human respiratory syncytial virus (hRSV) (15.4%, 189/1231), enterovirus (EnV) (11.2%, 138/1231), human bocavirus (hBoV) (7.9%, 97/1231), parainfluenza 3 (hPIV3) (6.1%, 75/1231), human metapneumovirus (hMPV) (6.0%,74/1321), parainfluenza 4 (hPIV4) (4.1%, 51/1231), human coronavirus OC43 (hCoV-OC43) (3.4%, 42/1231), human coronavirus HKU1(hCoV-HKU1) (2.7%, 33/1231), human coronavirus NL63 (hCoV-NL63) (2.5%, 31/1231), parainfluenza 1 (hPIV1) (2.0%, 25/1231), parainfluenza 2 (hPIV2) (1.8%, 22/1231), human parechovirus (PeV) (1.1%, 14/1231), and human coronavirus 229E (hCoV-229E) (0.9%, 11/1231). Among SARI cases, infants aged 1–4 years were mostly affected (50.7%; 622/1231), followed by those <1 year of age (35.7%; 438/1231). Most detected pathogens had year-long circulation patterns, with seasonal peaks mainly observed during the cold and dry seasons. Conclusion: Several non-influenza viruses are cause of SARI in Burkina Faso. The integration of the most common pathogens into the routine influenza surveillance system might be beneficial. | |||
Nora Schmit, Hillary M. Topazian, H. Magloire Natama, Duncan Bellamy, Ousmane Traoré, M. Athanase Somé, Toussaint Rouamba, Marc Christian Tahita, Massa Achille Bonko, Aboubakary Sourabié, Hermann Sorgho, Lisa Stockdale, Samuel Provstgaard-Morys, Jeremy Aboagye, Danielle Woods, Katerina Rapi, Mehreen S. Datoo, Fernando Ramos Lopez, Giovanni D. Charles, Kelly McCain, Jean Bosco Ouedraogo, Mainga Hamaluba, Ally Olotu, Alassane Dicko, Halidou Tinto, Adrian V. S. Hill, Katie J. Ewer, Azra C. Ghani, Peter Winskill The public health impact and cost-effectiveness of the R21/Matrix-M malaria vaccine: a mathematical modelling study Journal Article In: The Lancet. Infectious diseases, vol. 24, iss. 5, pp. 465-475, 2024, ISSN: 1474-4457. Abstract | BibTeX | Tags: Antibodies, Burkina Faso / epidemiology, Child, Cost-Benefit Analysis*, Falciparum* / economics, Falciparum* / epidemiology, Falciparum* / prevention & control, Female, Hillary M Topazian, Humans, Infant, Malaria, Malaria Vaccines* / administration & dosage, Malaria Vaccines* / economics, Malaria Vaccines* / immunology, Male, MEDLINE, Models, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Non-U.S. Gov't, Nora Schmit, Peter Winskill, Plasmodium falciparum / immunology, pmid:38342107, Preschool, Protozoan / blood, Protozoan Proteins / immunology, Public Health* / economics, PubMed Abstract, Research Support, Theoretical*, Vaccine Efficacy | Links: @article{Schmit2024, Background: The R21/Matrix-M vaccine has demonstrated high efficacy against Plasmodium falciparum clinical malaria in children in sub-Saharan Africa. Using trial data, we aimed to estimate the public health impact and cost-effectiveness of vaccine introduction across sub-Saharan Africa. Methods: We fitted a semi-mechanistic model of the relationship between anti-circumsporozoite protein antibody titres and vaccine efficacy to data from 3 years of follow-up in the phase 2b trial of R21/Matrix-M in Nanoro, Burkina Faso. We validated the model by comparing predicted vaccine efficacy to that observed over 12–18 months in the phase 3 trial. Integrating this framework within a mathematical transmission model, we estimated the cases, malaria deaths, and disability-adjusted life-years (DALYs) averted and cost-effectiveness over a 15-year time horizon across a range of transmission settings in sub-Saharan Africa. Cost-effectiveness was estimated incorporating the cost of vaccine introduction (dose, consumables, and delivery) relative to existing interventions at baseline. We report estimates at a median of 20% parasite prevalence in children aged 2–10 years (PfPR2–10) and ranges from 3% to 65% PfPR2–10. Findings: Anti-circumsporozoite protein antibody titres were found to satisfy the criteria for a surrogate of protection for vaccine efficacy against clinical malaria. Age-based implementation of a four-dose regimen of R21/Matrix-M vaccine was estimated to avert 181 825 (range 38 815–333 491) clinical cases per 100 000 fully vaccinated children in perennial settings and 202 017 (29 868–405 702) clinical cases per 100 000 fully vaccinated children in seasonal settings. Similar estimates were obtained for seasonal or hybrid implementation. Under an assumed vaccine dose price of US$3, the incremental cost per clinical case averted was $7 (range 4–48) in perennial settings and $6 (3–63) in seasonal settings and the incremental cost per DALY averted was $34 (29–139) in perennial settings and $30 (22–172) in seasonal settings, with lower cost-effectiveness ratios in settings with higher PfPR2–10. Interpretation: Introduction of the R21/Matrix-M malaria vaccine could have a substantial public health benefit across sub-Saharan Africa. Funding: The Wellcome Trust, the Bill & Melinda Gates Foundation, the UK Medical Research Council, the European and Developing Countries Clinical Trials Partnership 2 and 3, the NIHR Oxford Biomedical Research Centre, and the Serum Institute of India, Open Philanthropy. | |||
Hervé Bassinga, Mady Ouedraogo, Kadari Cisse, Parfait Yira, Sibiri Clément Ouedraogo, Abdou Nombré, Wofom Lydie Marie Bernard Bance, Mathias Kuepie, Toussaint Rouamba Prevalence of asymptomatic malaria at the communal level in Burkina Faso: an application of the small area estimation approach Journal Article In: Population health metrics, vol. 22, iss. 1, 2024, ISSN: 1478-7954. Abstract | BibTeX | Tags: Asymptomatic Infections / epidemiology, Burkina Faso / epidemiology, Carrier State / epidemiology, Child, doi:10.1186/s12963-024-00341-1, Female, Hervé Bassinga, Humans, Infant, Mady Ouedraogo, Malaria* / epidemiology, Male, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, PMC11330607, pmid:39155384, Preschool, Prevalence, PubMed Abstract, Small-Area Analysis, Toussaint Rouamba | Links: @article{Bassinga2024, Background: In malaria-endemic countries, asymptomatic carriers of plasmodium represent an important reservoir for malaria transmission. Estimating the burden at a fine scale and identifying areas at high risk of asymptomatic carriage are important to guide malaria control strategies. This study aimed to estimate the prevalence of asymptomatic carriage at the communal level in Burkina Faso, the smallest geographical entity from which a local development policy can be driven. Methods: The data used in this study came from several open sources: the 2018 Multiple Indicator Cluster Survey on Malaria and the 2019 general census of the population data and environmental. The analysis involved a total of 5489 children under 5 from the malaria survey and 293,715 children under 5 from the census. The Elbers Langjouw and Langjouw (ELL) approach is used to estimate the prevalence. This approach consists of including data from several sources (mainly census and survey data) in a statistical model to obtain predictive indicators at a sub-geographical level, which are not measured in the population census. The method achieves this by finding correlations between common census variables and survey data. Findings: The findings suggest that the spatial distribution of the prevalence of asymptomatic carriage is very heterogeneous across the communes. It varies from a minimum of 5.1% (95% CI 3.6–6.5) in the commune of Bobo-Dioulasso to a maximum of 41.4% (95% CI 33.5–49.4) in the commune of Djigoué. Of the 341 communes, 208 (61%) had prevalences above the national average of 20.3% (95% CI 18.8–21.2). Contributions: This analysis provided commune-level estimates of the prevalence of asymptomatic carriage of plasmodium in Burkina Faso. The results of this analysis should help to improve planning of malaria control at the communal level in Burkina Faso. | |||
Irene Molina–de Fuente, Marc Christian Tahita, Kabore Bérenger, Thuy Huong Ta Tang, Luz García, Vicenta González, Agustín Benito, Judith M. Hübschen, Halidou Tinto, Pedro Berzosa Malaria diagnosis challenges and pfhrp2 and pfhrp3 gene deletions using pregnant women as sentinel population in Nanoro region, Burkina Faso Journal Article In: Pathogens and global health, vol. 118, iss. 6, 2024, ISSN: 2047-7732. Abstract | BibTeX | Tags: Adolescent, Adult, Antigens, Burkina Faso / epidemiology, Diagnostic Tests, doi:10.1080/20477724.2024.2388489, Falciparum* / diagnosis, Falciparum* / epidemiology, Falciparum* / parasitology, Female, Gene Deletion*, Humans, Irene Molina-de la Fuente, Malaria, Marc Christian Tahita, MEDLINE, Microscopy, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Non-U.S. Gov't, Parasitic / diagnosis, Parasitic / epidemiology, Pedro Berzosa, Plasmodium falciparum* / genetics, Plasmodium falciparum* / isolation & purification, PMC11441055, pmid:39140699, Pregnancy, Pregnancy Complications, Protozoan Proteins* / genetics, Protozoan* / genetics, PubMed Abstract, Research Support, Routine* / methods, Sensitivity and Specificity*, Young Adult | Links: @article{nokey, Malaria in pregnancy causes adverse consequences and prompt and accurate diagnosis is essential for case management. In malaria endemic countries, diagnosis is mainly based on rapid diagnostic tests (RDT) and microscopy. However, increasing reports of false negatives caused by low parasitemia and pfhrp2/3 deletions raise concerns about HRP2-based RDT usefulness. This study aimed to assess RDT and microscopy performance and to describe pfhrp2/3 deletions in a cohort of 418 pregnant women in Burkina Faso. Malaria was diagnosed using RDT and microscopy and blood samples were collected during antenatal care visits. Diagnostic results were compared to PCR as gold standard. Pfhrp2 and pfhrp3 deletions were characterized for patients with confirmed P. falciparum infection. RDT had better sensitivity (76%) but lower specificity (83%) than microscopy (sensitivity = 57%; specificity = 98%). Low parasitemia (<150 parasites/µL), especially in multigravidae, was the principal factor causing false negatives by both methods. Moreover, pfhrp2 deletion frequency among overall false negatives by RDT was 21.43%. Higher frequency of deletions was found among all samples, independently of RDT result, for example around 2% of samples had double deletions meaning that the majority of deletions had no effect on RDT testing. Finally, it was found higher pfhrp2 deletion in women with lower uterine height during the first trimester. Wider and National surveillance study of deletions is recommended among pregnant women and in Burkina Faso. | |||
2023 |
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Journal Articles |
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Serge Ouoba, Ko Ko, Moussa Lingani, Shintaro Nagashima, Alice N. Guingané, E. Bunthen, Md Razeen Ashraf Hussain, Aya Sugiyama, Tomoyuki Akita, Masayuki Ohisa, Moussa Abdel Sanou, Ousmane Traore, Job Wilfried Nassa, Maimouna Sanou, Kazuaki Takahashi, Halidou Tinto, Junko Tanaka Intermediate hepatitis B virus infection prevalence among 1622 pregnant women in rural Burkina Faso and implications for mother-to-child transmission Journal Article In: Scientific reports, vol. 13, iss. 1, 2023, ISSN: 2045-2322. Abstract | BibTeX | Tags: Burkina Faso / epidemiology, Child, DNA, doi:10.1038/s41598-023-32766-3, Female, Hepatitis B e Antigens, Hepatitis B Surface Antigens, Hepatitis B virus / genetics, Hepatitis B* / diagnosis, Humans, Infectious Disease Transmission, Infectious* / epidemiology, Junko Tanaka, Ko Ko, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Non-U.S. Gov't, PMC10103033, pmid:37059812, Pregnancy, Pregnancy Complications, Pregnant Women, Prevalence, PubMed Abstract, Research Support, Serge Ouoba, Vertical / prevention & control, Viral / genetics | Links: @article{Ouoba2023, In highly endemic countries for hepatitis B virus (HBV) infection, childhood infection, including mother-to-child transmission (MTCT), represents the primary transmission route. High maternal DNA level (viral load ≥ 200,000 IU/mL) is a significant factor for MTCT. We investigated the prevalence of HBsAg, HBeAg, and high HBV DNA among pregnant women in three hospitals in Burkina Faso and assessed the performance of HBeAg to predict high viral load. Consenting pregnant women were interviewed on their sociodemographic characteristics and tested for HBsAg by a rapid diagnostic test, and dried blood spot (DBS) samples were collected for laboratory analyses. Of the 1622 participants, HBsAg prevalence was 6.5% (95% CI, 5.4–7.8%). Among 102 HBsAg-positive pregnant women in DBS samples, HBeAg was positive in 22.6% (95% CI, 14.9–31.9%), and viral load was quantified in 94 cases, with 19.1% having HBV DNA ≥ 200,000 IU/mL. HBV genotypes were identified in 63 samples and predominant genotypes were E (58.7%) and A (36.5%). The sensitivity of HBeAg by using DBS samples to identify high viral load in the 94 cases was 55.6%, and the specificity was 86.8%. These findings highlight the need to implement routine HBV screening and effective MTCT risk assessment for all pregnant women in Burkina Faso to enable early interventions that can effectively reduce MTCT. | |||
Peter J. Neyer, Bérenger Kaboré, Christos T. Nakas, Britta Hartmann, Annelies Post, Salou Diallo, Halidou Tinto, Angelika Hammerer-Lercher, Carlo R. Largiadèr, Andre J. Ven, Andreas R. Huber Exploring the host factors affecting asymptomatic Plasmodium falciparum infection: insights from a rural Burkina Faso study Journal Article In: Malaria journal, vol. 22, iss. 1, 2023, ISSN: 1475-2875. Abstract | BibTeX | Tags: Adolescent, Andreas R Huber, Asymptomatic Infections / epidemiology, Bérenger Kaboré, Burkina Faso / epidemiology, Child, doi:10.1186/s12936-023-04686-0, Falciparum* / epidemiology, hemoglobin, Hepcidins*, Humans, Malaria, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Peter J Neyer, Plasmodium falciparum / genetics, PMC10474782, pmid:37658365, PubMed Abstract, Sickle | Links: @article{Neyer2023, Background: Asymptomatic Plasmodium falciparum parasitaemia forms a reservoir for the transmission of malaria disease in West Africa. Certain haemoglobin variants are known to protect against severe malaria infection. However, data on the potential roles of haemoglobin variants and nongenetic factors in asymptomatic malaria infection is scarce and controversial. Therefore, this study investigated the associations of iron homeostasis, inflammation, nutrition, and haemoglobin mutations with parasitaemia in an asymptomatic cohort from a P. falciparum-endemic region during the high transmission season. Methods: A sub-study population of 688 asymptomatic individuals (predominantly children and adolescents under 15 years | |||
Palwende Romuald Boua, Toussaint Rouamba, Estelle Bambara, Saidou Kaboré, Ella W. R. Compaore, Boureima Ouedraogo, Halidou Tinto, Marie Louise Newell, Kate Ward, Hermann Sorgho Undernutrition in children aged 0-59 months by region and over time: secondary analysis of the Burkina Faso 2012-2018 National Nutrition Surveys Journal Article In: BMJ open, vol. 13, iss. 9, 2023, ISSN: 2044-6055. Abstract | BibTeX | Tags: {Author(firstnames='Adélaïde', Author(firstnames='Aminata', Author(firstnames='Caroline', Author(firstnames='Cornelius', Author(firstnames='Daniella', Author(firstnames='Doreen', Author(firstnames='Edith', Author(firstnames='Engelbert', Author(firstnames='Esmond W', Author(firstnames='James', Author(firstnames='Josephine', Author(firstnames='Kadija', Author(firstnames='Karim', Author(firstnames='Keith', Author(firstnames='Marie-Louise', Author(firstnames='Mark', Author(firstnames='Mary', Author(firstnames='Maxwell', Author(firstnames='Michael', Author(firstnames='Paul', Author(firstnames='Paula', Author(firstnames='Polly', Author(firstnames='Samuel', Author(firstnames='Sarah', Author(firstnames='Shane A', Author(firstnames='Stephanie', Author(firstnames='Winfred', Burkina Faso / epidemiology, Cachexia, Child, CollabAuthor(name='INPreP Study Group', Growth Disorders / epidemiology, Humans, Malnutrition* / epidemiology, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Non-U.S. Gov't, Nutrition Surveys, Palwende Romuald Boua, PMC10496659, Preschool, PubMed Abstract, Research Support, Thinness* / epidemiology, Toussaint Rouamba | Links: @article{Boua2023, The global burden of undernutrition remains high, responsible for significant under-five mortality in resource-limited settings. Numerous sustainable development goals (SDGs) are linked to nutrition, and nationally representative nutrition surveillance is a key activity to track progress towards SDGs and guide efficient programmes. Objectives The aim of this study is to look at spatial and temporal trends in undernutrition in children under 5 years age in Burkina Faso. Setting We used data from annual National Nutrition Surveys using Standardised Monitoring and Assessment of Relief and Transitions methodology (anthropometry, morbidity) over 7 years (2012-2018) in Burkina Faso. Participants Children of under 5 years from households selected through systemic sampling at countrywide level. Main outcome measures Prevalence of stunting (height-for-age z-score, <-2), underweight (weight-for-age z-score, <-2) and wasting (weight-for-height z-score, <-2) at regional and national. We used general linear mixed models, adjusted by age, survey year, sex, presence of fever and/or diarrhoea, and poverty index to quantify the risk of undernutrition over time and by region of residence. Results Between 2012 and 2018, decreases were observed overall in the prevalence of growth retardation (stunting) decreased from 33.0% (95% CI 32.3 to 33.8) in 2012 to 26.7% (95% CI 26.2 to 27.3) in 2018. Underweight reduced from 24.4% (95% CI 23.7 to 25.1) to 18.7% (95% CI 18.2 to 19.2) for the same period and wasting decreased from 10.8% (95% CI 10.3 to 11.3) in 2012 to 8.4% (95% CI 8.1 to 8.8) in 2018. However, there was substantial variation across the country, with increased risk of undernutrition in the regions of Sahel, East and Cascades primarily. High-risk regions were characterised by a lower poverty index and limited access to healthcare services. Conclusions Our findings could inform national policymakers in refining and optimising resource allocation based on the identification of high-risk areas. | |||
Hamtandi Magloire Natama, Gemma Moncunill, Marta Vidal, Toussaint Rouamba, Ruth Aguilar, Rebeca Santano, Eduard Rovira-Vallbona, Alfons Jiménez, M. Athanase Somé, Hermann Sorgho, Innocent Valéa, Maminata Coulibaly-Traoré, Ross L. Coppel, David Cavanagh, Chetan E. Chitnis, James G. Beeson, Evelina Angov, Sheetij Dutta, Benoit Gamain, Luis Izquierdo, Petra F. Mens, Henk D. F. H. Schallig, Halidou Tinto, Anna Rosanas-Urgell, Carlota Dobaño Associations between prenatal malaria exposure, maternal antibodies at birth, and malaria susceptibility during the first year of life in Burkina Faso Journal Article In: Infection and immunity, vol. 91, iss. 10, pp. 290, 2023, ISSN: 1098-5522. Abstract | BibTeX | Tags: Antibodies, Antigens, Burkina Faso / epidemiology, Carlota Dobaño, Child, Cohort Studies, doi:10.1128/iai.00268-23, Falciparum*, Female, Gemma Moncunill, Hamtandi Magloire Natama, Humans, Immunoglobulin G, Infant, Malaria, Malaria* / epidemiology, Maternal Exposure, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, Newborn, NIH, NLM, placenta, Plasmodium falciparum, PMC10580994, pmid:37754682, Pregnancy, Preschool, Protozoan, PubMed Abstract | Links: @article{Natama2023, In this study, we investigated how different categories of prenatal malaria exposure (PME) influence levels of maternal antibodies in cord blood samples and the subsequent risk of malaria in early childhood in a birth cohort study (N = 661) nested within the COSMIC clinical trial (NCT01941264) in Burkina Faso. Plasmodium falciparum infections during pregnancy and infants’ clinical malaria episodes detected during the first year of life were recorded. The levels of maternal IgG and IgG1-4 to 15 P. falciparum antigens were measured in cord blood by quantitative suspension array technology. Results showed a significant variation in the magnitude of maternal antibody levels in cord blood, depending on the PME category, with past placental malaria (PM) more frequently associated with significant increases of IgG and/or subclass levels across three groups of antigens defined as pre-erythrocytic, erythrocytic, and markers of PM, as compared to those from the cord of non-exposed control infants. High levels of antibodies to certain erythrocytic antigens (i.e., IgG to EBA140 and EBA175, IgG1 to EBA175 and MSP142, and IgG3 to EBA140 and MSP5) were independent predictors of protection from clinical malaria during the first year of life. By contrast, high levels of IgG, IgG1, and IgG2 to the VAR2CSA DBL1-2 and IgG4 to DBL3-4 were significantly associated with an increased risk of clinical malaria. These findings indicate that PME categories have different effects on the levels of maternal-derived antibodies to malaria antigens in children at birth, and this might drive heterogeneity to clinical malaria susceptibility in early childhood. | |||
Paul Sondo, Bérenger Kaboré, Toussaint Rouamba, Eulalie Compaoré, Yssimini Nadège Guillène Tibiri, Hyacinthe Abd El Latif Faïçal Kaboré, Karim Derra, Marc Christian Tahita, Hamidou Ilboudo, Gauthier Tougri, Ismaïla Bouda, Tikanou Dakyo, Hyacinthe Kafando, Florence Ouédraogo, Eli Rouamba, So Franck Hien, Adama Kazienga, Cheick Saïd Compaoré, Estelle Bambara, Macaire Nana, Prabin Dahal, Franck Garanet, William Kaboré, Thierry Léfèvre, Philippe Guerin, Halidou Tinto Enhanced effect of seasonal malaria chemoprevention when coupled with nutrients supplementation for preventing malaria in children under 5 years old in Burkina Faso: a randomized open label trial Journal Article In: Malaria journal, vol. 22, iss. 1, 2023, ISSN: 1475-2875. Abstract | BibTeX | Tags: Antimalarials* / therapeutic use, Bérenger Kaboré, Burkina Faso / epidemiology, Chemoprevention, Child, Cross-Sectional Studies, Dietary Supplements, doi:10.1186/s12936-023-04745-6, Halidou Tinto, Humans, Infant, Malaria* / epidemiology, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Nutrients, Paul Sondo, PMC10585892, pmid:37853408, Preschool, PubMed Abstract, Randomized controlled trial, Seasons, Vitamin A / therapeutic use | Links: @article{Sondo2023, Background: In rural African settings, most of the children under the coverage of Seasonal Malaria Chemoprevention (SMC) are also undernourished at the time of SMC delivery, justifying the need for packaging malarial and nutritional interventions. This study aimed at assessing the impact of SMC by coupling the intervention with nutrients supplementation for preventing malaria in children less than 5 years old in Burkina Faso. Methods: A randomized trial was carried out between July 2020 and June 2021 in the health district of Nanoro, Burkina Faso. Children (n = 1059) under SMC coverage were randomly assigned to one of the three study arms SMC + Vitamin A (SMC-A | |||
Samiratou Ouedraogo, Isidore Tiandiogo Traoré, Dramane Kania, Nongodo Firmin Kaboré, Ariane Mamguem Kamga, Hermann Badolo, Mimbouré Yara, Guillaume Sanou, Amariane Koné, Samdapawindé Thérèse Kagoné, Esperance Ouédraogo, Blahima Konaté, Rachel Médah, Nathalie Rekeneire, Armel Poda, Arnaud Eric Diendere, Boukary Ouédraogo, Oumar Billa, Gilles Paradis, Halidou Tinto, Tienhan Sandrine Dabakuyo-Yonli The burden of the coronavirus disease 2019 virus infection in Burkina Faso: Results from a World Health Organization UNITY population-based, age-stratified sero-epidemiological investigation Journal Article In: Influenza and other respiratory viruses, vol. 17, iss. 11, 2023, ISSN: 1750-2659. Abstract | BibTeX | Tags: Adolescent, Adult, Antibodies, Burkina Faso / epidemiology, Child, COVID-19* / epidemiology, doi:10.1111/irv.13216, Humans, Isidore Tiandiogo Traoré, MEDLINE, Middle Aged, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, PMC10655778, pmid:38019697, PubMed Abstract, Samiratou Ouédraogo, SARS-CoV-2*, Seroepidemiologic Studies, Surveys and Questionnaires, Tienhan Sandrine Dabakuyo-Yonli, Viral | Links: @article{Ouedraogo2023, Background: This study aimed to estimate the anti-SARS-CoV-2 antibody seroprevalence in the general population of Bobo-Dioulasso and Ouagadougou (Burkina Faso). Methods: We collected from March to April 2021 blood samples from randomly selected residents in both main cities based on the World Health Organization (WHO) sero-epidemiological investigations protocols and tested them with WANTAI SARS-CoV-2 total antibodies enzyme-linked immunosorbent assay (ELISA) kits intended for qualitative assessment. We also recorded participants' socio-demographic and clinical characteristics and information on exposure to SARS-CoV-2. Data were analysed with descriptive and comparative statistics. Results: We tested 5240 blood samples collected between 03 March and 16 April 2021. The overall test-adjusted seroprevalence for SARS-CoV-2 antibodies was (67.8% [95% CI 65.9–70.2]) (N = 3553/3982). Seroprevalence was highest among participants aged 15–18 years old (74.2% [95% CI 70.5–77.5]) (N = 465/627), compared with those aged 10–14 years old (62.6% [95% CI 58.7–66.4]) (N = 395/631), or those over 18 (67.6% [95% CI 66.2–69.1]) (N = 2693/3982). Approximately 71.0% (601/860) of participants aged 10–18 years old who tested positive for SARS-CoV-2 antibodies experienced no clinical COVID-19 symptoms in the weeks before the survey, compared with 39.3% (1059/2693) among those aged over 18 years old. Conclusion: This study reports the results of the first known large serological survey in the general population of Burkina Faso. It shows high circulation of SARS-CoV-2 in the two cities and a high proportion of asymptomatic adolescents. Further studies are needed to identify the SARS-CoV-2 variants and to elucidate the factors protecting some infected individuals from developing clinical COVID-19. | |||
Blahima Konate, Rachel Medah, Isidore Traore, Samiratou Ouedraogo, Nongodo Firmin Kabore, Ariane Kamga Mamguem, Oumar Billa, Dramane Kania, Hermann Badolo, Esperance Ouedraogo, Nathalie Rekeneire, Armel Poda, Arnaud Eric Diendere, Boukary Ouedraogo, Halidou Tinto, Tienhan Sandrine Dabakuyo-Yonli A Qualitative Study of the Experience of COVID-19 Patients in Burkina Faso Journal Article In: The American journal of tropical medicine and hygiene, vol. 110, iss. 1, pp. 170-178, 2023, ISSN: 1476-1645. Abstract | BibTeX | Tags: Blahima Konaté, Burkina Faso / epidemiology, COVID-19*, Cross-Sectional Studies, doi:10.4269/ajtmh.22-0351, Humans, MEDLINE, National Center for Biotechnology Information, National Institutes of Health, National Library of Medicine, NCBI, NIH, NLM, Patients, PMC10793024, pmid:38109766, PubMed Abstract, Qualitative research, Rachel Médah, Tienhan Sandrine Dabakuyo-Yonli | Links: @article{Konate2023, In Burkina Faso, the health system is characterized by systemic insufficient and antiquated health-care infrastructures. Consequently, few health-care establishments have the required resources to diagnose and manage patients with COVID-19, and fewer still have intensive care facilities for severely ill patients with COVID. Furthermore, there is a widespread scarcity of qualified health-care staff. The aim of this study was to explore the experiences of patients with COVID-19 who recovered after being cared for in Bobo Dioulasso and Ouagadougou. Using individual semistructured interviews, we performed a cross-sectional qualitative, descriptive study from June 12 to 30, 2020 with the aid of 13 well-educated patients who had survived COVID-19. The results reveal that prior to hospital admission, the main reason that prompted patients to seek care was onset of symptoms of COVID-19, regardless of whether they had been in contact with suspected or confirmed cases. Transmission was mainly believed to have occurred in the community, in the hospital, and during travel. Patient management was punctuated by frequent self-medication with medicinal plants or pharmaceutical drugs. The participants reported a negative perception of hospitalization or home-based management, with several forms of stigmatization, but a positive perception influenced by the satisfactory quality of management in health-care centers. This report of patient experiences could be helpful in improving the management of COVID-19 in Burkina Faso, both in the health-care setting and in home-based care. |
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