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May T, Babirekere-Iriso E, Traoré M, Berbain E, Ahmed M, Amadi B, Briend A, Manary M, Shamit Koroma A, Hanchard N, Frahm Olsen M, Friis H, PrayGod G, Girma T, Moussa M, Mahamadou A, Hotez P, Seini Sabo H. The neglect of kwashiorkor. Lancet Child Adolesc Health 2023; 7:751-753. [PMID: 37640033 DOI: 10.1016/s2352-4642(23)00214-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/17/2023] [Accepted: 08/07/2023] [Indexed: 08/31/2023]
Affiliation(s)
- Thaddaeus May
- Department of Internal Medicine, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Esther Babirekere-Iriso
- Mwanamugimu Nutrition Unit, Department of Paediatrics and Child Health, Mulago National Referral Hospital, Kampala, Uganda
| | - Mamady Traoré
- Medical Department, Médecins Sans Frontières, Paris, France
| | | | - Maimuna Ahmed
- Department of Pediatrics and Child Health, Weill Bugando Medical Centre, Catholic University of Health and Allied Sciences, Mwanza, Tanzania
| | - Beatrice Amadi
- Department of Paediatrics, University Teaching Hospital, Lusaka, Zambia; Tropical Gastroenterology and Nutrition Group, University of Zambia School of Medicine, Lusaka, Zambia
| | - André Briend
- Centre for Child Health Research and Tampere University Hospital, University of Tampere, Tampere, Finland; Department of Nutrition, Exercise, and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Mark Manary
- Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO, USA
| | | | - Neil Hanchard
- The National Human Genome Research Institute, Center for Precision Health Research, Bethesda, MD, USA
| | - Mette Frahm Olsen
- Department of Nutrition, Exercise, and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Henrik Friis
- Department of Nutrition, Exercise, and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - George PrayGod
- Mwanza Research Centre, National Institute for Medical Research, Mwanza, Tanzania
| | - Tsinuel Girma
- Department of Pediatrics and Child Health, Jimma University, Jimma, Ethiopia
| | - Moustapha Moussa
- Institut National de Recherche Agronomique du Niger, Niamey, Niger
| | | | - Peter Hotez
- Texas Children's Hospital and Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Haoua Seini Sabo
- Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University, Niamey, Niger
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Phelan K, Seri B, Daures M, Yao C, Alitanou R, Aly AAM, Maidadji O, Sanoussi A, Mahamadou A, Cazes C, Moh R, Becquet R, Shepherd S. Treatment outcomes and associated factors for hospitalization of children treated for acute malnutrition under the OptiMA simplified protocol: a prospective observational cohort in rural Niger. Front Public Health 2023; 11:1199036. [PMID: 37475774 PMCID: PMC10354363 DOI: 10.3389/fpubh.2023.1199036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/14/2023] [Indexed: 07/22/2023] Open
Abstract
Introduction Globally, access to treatment for severe and moderate acute malnutrition is very low, in part because different protocols and products are used in separate programs. New approaches, defining acute malnutrition (AM) as mid-upper arm circumference (MUAC) < 125 mm or oedema, are being investigated to compare effectiveness to current programs. Optimizing Malnutrition treatment (OptiMA) is one such strategy that treats AM with one product - ready-to-use therapeutic food, or RUTF - at reduced dosage as the child improves. Methods This study aimed to determine whether OptiMA achieved effectiveness benchmarks established in the Nigerien National Nutrition protocol. A prospective cohort study of children in the rural Mirriah district evaluated outcomes among children 6-59 months with uncomplicated AM treated under OptiMA. In a parallel, unconnected program in one of the two trial sites, all non-malnourished children 6-23 months of age were provided small quantity lipid-based nutritional supplements (SQ-LNS). A multivariate logistic regression identified factors associated with hospitalization. Results From July-December 2019, 1,105 children were included for analysis. Prior to treatment, 39.3% of children received SQ-LNS. Recovery, non-response, and mortality rates were 82.3%, 12.6%, and 0.7%, respectively, and the hospitalization rate was 15.1%. Children who received SQ-LNS before an episode of AM were 43% less likely to be hospitalized (ORa=0.57; 0.39-0.85, p = 0.004). Discussion OptiMA had acceptable recovery compared to the Nigerien reference but non-response was high. Children who received SQ-LNS before treatment under OptiMA were less likely to be hospitalized, showing potential health benefits of combining simplified treatment protocols with food-based prevention in an area with a high burden of malnutrition such as rural Niger.
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Affiliation(s)
- Kevin Phelan
- The Alliance for International Medical Action (ALIMA), Dakar, Senegal
| | - Benjamin Seri
- PRISME-CI ANRS|MIE Research Programme, University Hospital of Treichville, Abidjan, Côte d'Ivoire
- National Institute for Health and Medical Research (INSERM) UMR 1219, Research Institute for Sustainable Development (IRD) EMR 271, Bordeaux Population Health Research Centre, University of Bordeaux, Bordeaux, France
| | - Maguy Daures
- National Institute for Health and Medical Research (INSERM) UMR 1219, Research Institute for Sustainable Development (IRD) EMR 271, Bordeaux Population Health Research Centre, University of Bordeaux, Bordeaux, France
| | - Cyrille Yao
- PRISME-CI ANRS|MIE Research Programme, University Hospital of Treichville, Abidjan, Côte d'Ivoire
| | - Rodrigue Alitanou
- The Alliance for International Medical Action (ALIMA), Niamey, Niger
| | | | | | - Atté Sanoussi
- Ministry of Health, Nutrition Division, Niamey, Niger
| | - Aboubacar Mahamadou
- High-Commission of the Nigériens Nourrissent les Nigériens (3N) Initiative, Niamey, Niger
| | - Cécile Cazes
- National Institute for Health and Medical Research (INSERM) UMR 1219, Research Institute for Sustainable Development (IRD) EMR 271, Bordeaux Population Health Research Centre, University of Bordeaux, Bordeaux, France
| | - Raoul Moh
- PRISME-CI ANRS|MIE Research Programme, University Hospital of Treichville, Abidjan, Côte d'Ivoire
- National Institute for Health and Medical Research (INSERM) UMR 1219, Research Institute for Sustainable Development (IRD) EMR 271, Bordeaux Population Health Research Centre, University of Bordeaux, Bordeaux, France
- Dermatology and Infectiology Pedagogical Unit, Training and Research Units in Medical Sciences, Abidjan, Côte d'Ivoire
| | - Renaud Becquet
- National Institute for Health and Medical Research (INSERM) UMR 1219, Research Institute for Sustainable Development (IRD) EMR 271, Bordeaux Population Health Research Centre, University of Bordeaux, Bordeaux, France
| | - Susan Shepherd
- The Alliance for International Medical Action (ALIMA), Dakar, Senegal
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Arzika II, Lobo NF, Lamine MM, Tidjani IA, Sandrine H, Sarrasin-Hubert V, Mahamadou A, Adehossi E, Sarr D, Mahmud O, Maman Laminou I. Plasmodium falciparum kelch13 polymorphisms identified after treatment failure with artemisinin-based combination therapy in Niger. Malar J 2023; 22:142. [PMID: 37127669 PMCID: PMC10150466 DOI: 10.1186/s12936-023-04571-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 04/24/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND Artemisinin-based combination therapy (ACT) is the most effective treatment for malaria, and has significantly reduced morbimortality. Polymorphisms associated with the Plasmodium falciparum Kelch gene (Pfkelch13) have been associated with delayed parasite clearance even with ACT treatment. METHODS The Pfkelch13 gene was sequenced from P. falciparum infected patients (n = 159) with uncomplicated malaria in Niger. An adequate clinical and parasitological response (ACPR) was reported in 155 patients. Four (n = 4) patients had treatment failure (TF) that were not reinfections-two of which had late parasitological failures (LPF) and two had late clinical failures (LCF). RESULTS Thirteen single nucleotide polymorphisms (SNPs) were identified of which seven were non-synonymous (C469R, T508S, R515T, A578S, I465V, I437V, F506L,), and three were synonymous (P443P, P715P, L514L). Three SNP (C469R, F506L, P715P) were present before ACT treatment, while seven mutations (C469R, T508S, R515T, L514L, P443P, I437V, I465V) were selected by artemether/lumefantrine (AL)-five of which were non-synonymous (C469R, T508S, R515T, I437V, I465V). Artesunate/amodiaquine (ASAQ) has selected any mutation. One sample presented three cumulatively non-synonymous SNPs-C469R, T508S, R515T. CONCLUSIONS This study demonstrates intra-host selection of Pfkelch13 gene by AL. The study highlights the importance of LCF and LPF parasites in the selection of resistance to ACT. Further studies using gene editing are required to confirm the potential implication of resistance to ACT with the most common R515T and T508S mutations. It would also be important to elucidate the role of cumulative mutations.
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Affiliation(s)
| | | | - Mahaman Moustapha Lamine
- Centre de Recherche Médicale et Sanitaire de Niamey, Niamey, Niger.
- Université André Salifou de Zinder, Zinder, Niger.
| | | | - Houzé Sandrine
- Centre National de Référence du Paludisme, Paris, France
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Issa I, Lamine MM, Hubert V, Ilagouma A, Adehossi E, Mahamadou A, Lobo NF, Sarr D, Shollenberger LM, Sandrine H, Jambou R, Laminou IM. Prevalence of Mutations in the Pfdhfr, Pfdhps, and Pfmdr1 Genes of Malarial Parasites Isolated from Symptomatic Patients in Dogondoutchi, Niger. Trop Med Infect Dis 2022; 7:tropicalmed7080155. [PMID: 36006247 PMCID: PMC9413624 DOI: 10.3390/tropicalmed7080155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
The effectiveness of artemisinin-based combination therapies (ACTs) depends not only on that of artemisinin but also on that of partner molecules. This study aims to evaluate the prevalence of mutations in the Pfdhfr, Pfdhps, and Pfmdr1 genes from isolates collected during a clinical study. Plasmodium genomic DNA samples extracted from symptomatic malaria patients from Dogondoutchi, Niger, were sequenced by the Sanger method to determine mutations in the Pfdhfr (codons 51, 59, 108, and 164), Pfdhps (codons 436, 437, 540, 581, and 613), and Pfmdr1 (codons 86, 184, 1034, and 1246) genes. One hundred fifty-five (155) pre-treatment samples were sequenced for the Pfdhfr, Pfdhps, and Pfmdr1 genes. A high prevalence of mutations in the Pfdhfr gene was observed at the level of the N51I (84.97%), C59R (92.62%), and S108N (97.39%) codons. The key K540E mutation in the Pfdhps gene was not observed. Only one isolate was found to harbor a mutation at codon I431V. The most common mutation on the Pfmdr1 gene was Y184F in 71.43% of the mutations found, followed by N86Y in 10.20%. The triple-mutant haplotype N51I/C59R/S108N (IRN) was detected in 97% of the samples. Single-mutant (ICS and NCN) and double-mutant (IRS, NRN, and ICN) haplotypes were prevalent at 97% and 95%, respectively. Double-mutant haplotypes of the Pfdhps (581 and 613) and Pfmdr (86 and 184) were found in 3% and 25.45% of the isolates studied, respectively. The study focused on the molecular analysis of the sequencing of the Pfdhfr, Pfdhps, and Pfmdr1 genes. Although a high prevalence of mutations in the Pfdhfr gene have been observed, there is a lack of sulfadoxine pyrimethamine resistance. There is a high prevalence of mutation in the Pfmdr184 codon associated with resistance to amodiaquine. These data will be used by Niger’s National Malaria Control Program to better monitor the resistance of Plasmodium to partner molecules in artemisinin-based combination therapies.
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Affiliation(s)
- Ibrahima Issa
- Centre de Recherche Médicale et Sanitaire, Niamey P.O. Box 10887, Niger; (I.I.); (A.M.); (R.J.)
| | | | - Veronique Hubert
- Centre National de Référence du Paludisme à Paris en France, 75013 Paris, France; (V.H.); (H.S.)
| | - Amadou Ilagouma
- Faculty of Sciences, University Abdou Moumouni of Niamey, Niamey P.O. Box 10662, Niger; (A.I.); (E.A.)
| | - Eric Adehossi
- Faculty of Sciences, University Abdou Moumouni of Niamey, Niamey P.O. Box 10662, Niger; (A.I.); (E.A.)
| | - Aboubacar Mahamadou
- Centre de Recherche Médicale et Sanitaire, Niamey P.O. Box 10887, Niger; (I.I.); (A.M.); (R.J.)
| | - Neil F. Lobo
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA;
| | - Demba Sarr
- Department of Infectious Diseases, University of Georgia, Athens, GA 30602, USA;
| | | | - Houze Sandrine
- Centre National de Référence du Paludisme à Paris en France, 75013 Paris, France; (V.H.); (H.S.)
| | - Ronan Jambou
- Centre de Recherche Médicale et Sanitaire, Niamey P.O. Box 10887, Niger; (I.I.); (A.M.); (R.J.)
| | - Ibrahim Maman Laminou
- Centre de Recherche Médicale et Sanitaire, Niamey P.O. Box 10887, Niger; (I.I.); (A.M.); (R.J.)
- Correspondence: ; Tel.: +227-80-88-20-22
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Ibrahima I, Laminou IM, Adehossi E, Maman D, Boureima S, Harouna HK, Hamidou HH, Mahamadou A, Yacouba I, Hadiza J, Tidjani IA. [Safety and Efficacy of Artemether-Lumefantrine and Artesunate-Amodiaquine in Niger]. Bull Soc Pathol Exot 2021; 113:17-23. [PMID: 32881447 DOI: 10.3166/bspe-2020-0120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 04/02/2020] [Indexed: 11/20/2022]
Abstract
This study aims to evaluate the therapeutic efficacy and tolerance of two ACTs widely used for the treatment of uncomplicated malaria due to Plasmodium falciparum in Niger. The study was conducted from September to November 2017, at the Integrated Health Centers of Dogondoutchi and Birni N'Gaouré, in patients aged from 6 months to 15 years, with uncomplicated malaria due to Plasmodium falciparum. They were treated with either Artemether-Lumefantrine (AL) or Artesunate-Amodiaquine (ASAQ). The primary endpoint was the appropriate clinical and parasitological response (RCPA) to D28, after PCR correction. The secondary criteria were the clearing time of fever, parasites, and gametocytes and then the occurrence of adverse events. A total of 459 patients were examined, of whom 312 patients met the inclusion criteria for therapeutic efficacy evaluation. We have followed 299 patients up to J28 including 146 in the AL arm and 153 in the ASAQ arm. After PCR correction at J28, RCPA were 95.8% and 96% (P = 0.7185) for arms AL and ASAQ, respectively, compared to 93.1% and 94.1% respectively before PCR correction (P = 0.7892). The number of patients on AL and ASAQ treatment who developed an adverse reaction were 6 (7.6%) and 23 (28%) respectively. AL and ASAQ associations are effective and well tolerated. No serious adverse event was noted. However, their monitoring must continue to detect possible resistance.
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Affiliation(s)
- I Ibrahima
- Centre de recherche médicale et sanitaire, BP 10887, Niamey, Niger
| | - I Maman Laminou
- Centre de recherche médicale et sanitaire, BP 10887, Niamey, Niger
| | - E Adehossi
- Faculté des sciences de la santé, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
| | - D Maman
- Faculté des sciences de la santé, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
| | - S Boureima
- Faculté des sciences de la santé, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
| | - H Kadri Harouna
- Faculté des sciences de la santé, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
| | - H Hassan Hamidou
- Faculté des sciences de la santé, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
| | - A Mahamadou
- Centre de recherche médicale et sanitaire, BP 10887, Niamey, Niger
| | - I Yacouba
- Programme national de lutte contre le paludisme, BP 623, Niamey, Niger
| | - J Hadiza
- Programme national de lutte contre le paludisme, BP 623, Niamey, Niger
| | - I Amadou Tidjani
- Faculté des sciences et techniques, université Abdou-Moumouni de Niamey-Niger, BP 10896, Niamey, Niger
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Guillebaud J, Mahamadou A, Zamanka H, Katzelma M, Arzika I, Ibrahim ML, Eltahir EA, Labbo R, Druilhe P, Duchemin JB, Fandeur T. Epidemiology of malaria in an area of seasonal transmission in Niger and implications for the design of a seasonal malaria chemoprevention strategy. Malar J 2013; 12:379. [PMID: 24172107 PMCID: PMC3816780 DOI: 10.1186/1475-2875-12-379] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 10/23/2013] [Indexed: 01/04/2023] Open
Abstract
Background Few data are available about malaria epidemiological situation in Niger. However, implementation of new strategies such as vaccination or seasonal treatment of a target population requires the knowledge of baseline epidemiological features of malaria. A population-based study was conducted to provide better characterization of malaria seasonal variations and population groups the most at risk in this particular area. Methods From July 2007 to December 2009, presumptive cases of malaria among a study population living in a typical Sahelian village of Niger were recorded, and confirmed by microscopic examination. In parallel, asymptomatic carriers were actively detected at the end of each dry season in 2007, 2008 and 2009. Results Among the 965 presumptive malaria cases recorded, 29% were confirmed by microscopic examination. The incidence of malaria was found to decrease significantly with age (p < 0.01). The mean annual incidence was 0.254. The results show that the risk of malaria was higher in children under ten years (p < 0.0001). The number of malaria episodes generally followed the temporal pattern of changes in precipitation levels, with a peak of transmission in August and September. One-thousand and ninety subjects were submitted to an active detection of asymptomatic carriage of whom 16% tested positive; asymptomatic carriage decreased with increasing age. A higher prevalence of gametocyte carriage among asymptomatic population was recorded in children aged two to ten years, though it did not reach significance. Conclusions In Southern Niger, malaria transmission mostly occurs from July to October. Children aged two to ten years are the most at risk of malaria, and may also represent the main reservoir for gametocytes. Strategies such as intermittent preventive treatment in children (IPTc) could be of interest in this area, where malaria transmission is highly seasonal. Based on these preliminary data, a pilot study could be implemented in Zindarou using IPTc targeting children aged two to ten years, during the three months of malaria transmission, together with an accurate monitoring of drug resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Thierry Fandeur
- Unité de Parasitologie, Centre de Recherche Médicale et Sanitaire, 634 Bd de la Nation, BP 10887, YN034 Niamey, Niger.
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Doudou MH, Mahamadou A, Ouba I, Lazoumar R, Boubacar B, Arzika I, Zamanka H, Ibrahim ML, Labbo R, Maiguizo S, Girond F, Guillebaud J, Maazou A, Fandeur T. A refined estimate of the malaria burden in Niger. Malar J 2012; 11:89. [PMID: 22453027 PMCID: PMC3342108 DOI: 10.1186/1475-2875-11-89] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 03/27/2012] [Indexed: 11/13/2022] Open
Abstract
Background The health authorities of Niger have implemented several malaria prevention and control programmes in recent years. These interventions broadly follow WHO guidelines and international recommendations and are based on interventions that have proved successful in other parts of Africa. Most performance indicators are satisfactory but, paradoxically, despite the mobilization of considerable human and financial resources, the malaria-fighting programme in Niger seems to have stalled, as it has not yet yielded the expected significant decrease in malaria burden. Indeed, the number of malaria cases reported by the National Health Information System has actually increased by a factor of five over the last decade, from about 600,000 in 2000 to about 3,000,000 in 2010. One of the weaknesses of the national reporting system is that the recording of malaria cases is still based on a presumptive diagnosis approach, which overestimates malaria incidence. Methods An extensive nationwide survey was carried out to determine by microscopy and RDT testing, the proportion of febrile patients consulting at health facilities for suspected malaria actually suffering from the disease, as a means of assessing the magnitude of this problem and obtaining a better estimate of malaria morbidity in Niger. Results In total, 12,576 febrile patients were included in this study; 57% of the slides analysed were positive for the malaria parasite during the rainy season, when transmission rates are high, and 9% of the slides analysed were positive during the dry season, when transmission rates are lower. The replacement of microscopy methods by rapid diagnostic tests resulted in an even lower rate of confirmation, with only 42% of cases testing positive during the rainy season, and 4% during the dry season. Fever alone has a low predictive value, with a low specificity and sensitivity. These data highlight the absolute necessity of confirming all reported malaria cases by biological diagnosis methods, to increase the accuracy of the malaria indicators used in monitoring and evaluation processes and to improve patient care in the more remote areas of Niger. This country extends over a large range of latitudes, resulting in the existence of three major bioclimatic zones determining vector distribution and endemicity. Conclusion This survey showed that the number of cases of presumed malaria reported in health centres in Niger is largely overestimated. The results highlight inadequacies in the description of the malaria situation and disease risk in Niger, due to the over-diagnosis of malaria in patients with simple febrile illness. They point out the necessity of confirming all cases of suspected malaria by biological diagnosis methods and the need to take geographic constraints into account more effectively, to improve malaria control and to adapt the choice of diagnostic method to the epidemiological situation in the area concerned. Case confirmation will thus also require a change in behaviour, through the training of healthcare staff, the introduction of quality control, greater supervision of the integrated health centres, the implementation of good clinical practice and a general optimization of the use of available diagnostic methods.
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