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Faye SLB, Lugand MM, Offianan AT, Dossou-Yovo A, Kouadio DKM, Pinto F. Field testing of user-friendly perennial malaria chemoprevention packaging in Benin, Côte d'Ivoire and Mozambique. Malar J 2024; 23:157. [PMID: 38773567 PMCID: PMC11106929 DOI: 10.1186/s12936-024-04977-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 05/07/2024] [Indexed: 05/24/2024] Open
Abstract
BACKGROUND Perennial malaria chemoprevention (PMC) aims to protect children at risk from severe malaria by the administration of anti-malarial drugs to children of defined ages throughout the year. Sulfadoxine-pyrimethamine (SP) has been widely used for chemoprevention in Africa and a child-friendly dispersible tablet formulation has recently become available. METHODS This qualitative non-interventional observational study was conducted in Benin, Côte d'Ivoire, and Mozambique between February and June 2022. Prototype blister packs, dispensing boxes and job aids designed to support dispersible SP deployment for PMC were evaluated using focus group discussions (FGD) and semi-structured in-depth individual interviews (IDI) with health authorities, health personnel, community health workers (CHWs) and caregivers. The aim was to evaluate knowledge and perceptions of malaria and chemoprevention, test understanding of the tools and identify gaps in understanding, satisfaction, user-friendliness and acceptability, and assess the potential role of CHWs in PMC implementation. Interviews were transcribed and imported to ATLAS.ti for encoding and categorization. Thematic content analysis used deductive and inductive coding with cross-referencing of findings between countries and participants to enrich data interpretation. Continuous comparison across the IDI and FGD permitted iterative, collaborative development of materials. RESULTS Overall, 106 participants completed IDIs and 70 contributed to FGDs. Malaria was widely recognised as the most common disease affecting children, and PMC was viewed as a positive intervention to support child health. The role of CHWs was perceived differently by the target groups, with caregivers appreciating their trusted status in the community, whereas health authorities preferred clinic-based deployment of PMC by health professionals. Empirical testing of the prototype blister packs, dispensing boxes and job aids highlighted the context-specific expectations of respondents, such as familiar situations and equipment, and identified areas of confusion or low acceptance. A key finding was the need for a clear product identity reflecting malaria. CONCLUSION Simple modifications profoundly affected the perception of PMC and influenced acceptability. Iterative quantitative investigation resulted in PMC-specific materials suited to the local context and socio-cultural norms of the target population with the aim of increasing access to chemoprevention in children most at risk of severe malaria.
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Affiliation(s)
- Sylvain Landry Birane Faye
- Laboratoire de Sociologie, Anthropologie, Psychologie (LASAP), Department of Sociology, Cheikh Anta DIOP University (UCAD), Dakar, Senegal
| | - Maud Majeres Lugand
- Medicines for Malaria Venture, 20 Route de Pré-Bois, PO Box 1826, 1215, Geneva 15, Switzerland.
| | - André Touré Offianan
- Department of Parasitology & Mycology, Institut Pasteur of Côte d'Ivoire, Abidjan, Côte d'Ivoire
| | - Aurélie Dossou-Yovo
- Directorate of Health Training and Research, Ministry of Health, Cotonou, Benin
| | - Dieudonné Kouakou M'Bra Kouadio
- Département d'Anthropologie et de Sociologie/Centre de Recherche Pour le Développement, Université Alassane Ouattara, Bouaké, Côte d'Ivoire
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Huang S, Baker K, Ibinaiye T, Oresanya O, Nnaji C, Richardson S. Predictors of accessing seasonal malaria chemoprevention medicines through non-door-to-door distribution in Nigeria. Malar J 2024; 23:131. [PMID: 38702672 PMCID: PMC11067122 DOI: 10.1186/s12936-024-04964-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 04/25/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND In Nigeria, seasonal malaria chemoprevention (SMC) is typically administered door-to-door to children under five by community medicine distributors during high transmission seasons. While door-to-door distribution (DDD) is exclusively employed in Nigeria as part of standard operating procedures of SMC programmes, some households access SMC through non-DDD channels, such as fixed-point distributions, health facilities, and private purchase. However, analysis of access to SMC medicines through non-DDD has been limited, with little evidence of its outcomes on adherence to the three-day complete course of SMC medicines and caregiver actions in the event of adverse reactions to SMC medicines. METHODS Data were obtained from SMC end-of-round coverage surveys conducted in Nigeria in 2021 and 2022, including 25,278 households for the analysis. The proportion of households accessing SMC medicine through non-DDD and the distribution of various non-DDD sources of SMC medicines were described. Multivariate random-effects logistic regression models were performed to identify predictors of accessing SMC medicines through non-DDD. The associations between non-DDD, and caregiver-reporting of adherence to complete administration of SMC medicines and caregiver actions in the event of adverse reactions to SMC medicines were also assessed. RESULTS Less than 2% (314/24003) of households accessed SMC medicines through non-DDD in the states surveyed. Over 60% of non-DDD access was via health facility personnel and community medicine distributors from different locations. Variables associated with non-DDD access included heads of household being born in the local state (OR = 0.68, 95% CI 0.47 to 0.90), households residing in the study state since the first cycle of the SMC round (OR = 0.39, 95% CI 0.17 to 0.88), households with high wealth index (OR = 1.36, 95% CI 1.01 to 1.82), and caregivers hearing about date of SMC delivery in the previous cycle (OR = 0.18, 95%CI 0.14 to 0.24). Furthermore, non-DDD was associated with reduced SMC adherence and higher caregiver non-reporting of adverse reactions to SMC medicines in children compared with DDD. CONCLUSION This study provides evidence on the characteristics of households accessing SMC medicines through non-DDD and its potential negative outcomes on adherence to SMC medicine and adverse reaction reporting, underscoring potential implementation issues that may arise if non-DDD delivery models are adopted in SMC, particularly in places where DDD had been firstly used.
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Affiliation(s)
- Sikai Huang
- Vanke School of Public Health, Tsinghua University, Beijing, 100083, China
| | - Kevin Baker
- Malaria Consortium UK, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK
- Department of Global Public Health, Karolinska Institute, Stockholm, Sweden
| | - Taiwo Ibinaiye
- Malaria Consortium Nigeria, 33 Pope John Paul Street, Maitama, Abuja-FCT, Nigeria
| | - Olusola Oresanya
- Malaria Consortium Nigeria, 33 Pope John Paul Street, Maitama, Abuja-FCT, Nigeria
| | - Chuks Nnaji
- Malaria Consortium UK, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK
| | - Sol Richardson
- Vanke School of Public Health, Tsinghua University, Beijing, 100083, China.
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Bisanzio D, Keita MS, Camara A, Guilavogui T, Diallo T, Barry H, Preston A, Bangoura L, Mbounga E, Florey LS, Taton JL, Fofana A, Reithinger R. Malaria trends in districts that were targeted and not-targeted for seasonal malaria chemoprevention in children under 5 years of age in Guinea, 2014-2021. BMJ Glob Health 2024; 9:e013898. [PMID: 38413098 PMCID: PMC10900330 DOI: 10.1136/bmjgh-2023-013898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/26/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Seasonal malaria chemoprevention (SMC) is a main intervention to prevent and reduce childhood malaria. Since 2015, Guinea has implemented SMC targeting children aged 3-59 months (CU5) in districts with high and seasonal malaria transmission. OBJECTIVE We assessed the programmatic impact of SMC in Guinea's context of scaled up malaria intervention programming by comparing malaria-related outcomes in 14 districts that had or had not been targeted for SMC. METHODS Using routine health management information system data, we compared the district-level monthly test positivity rate (TPR) and monthly uncomplicated and severe malaria incidence for the whole population and disaggregated age groups (<5 years and ≥5 years of age). Changes in malaria indicators through time were analysed by calculating the district-level compound annual growth rate (CAGR) from 2014 to 2021; we used statistical analyses to describe trends in tested clinical cases, TPR, uncomplicated malaria incidence and severe malaria incidence. RESULTS The CAGR of TPR of all age groups was statistically lower in SMC (median=-7.8%) compared with non-SMC (median=-3.0%) districts. Similarly, the CAGR in uncomplicated malaria incidence was significantly lower in SMC (median=1.8%) compared with non-SMC (median=11.5%) districts. For both TPR and uncomplicated malaria incidence, the observed difference was also significant when age disaggregated. The CAGR of severe malaria incidence showed that all age groups experienced a decline in severe malaria in both SMC and non-SMC districts. However, this decline was significantly higher in SMC (median=-22.3%) than in non-SMC (median=-5.1%) districts for the entire population, as well as both CU5 and people over 5 years of age. CONCLUSION Even in an operational programming context, adding SMC to the malaria intervention package yields a positive epidemiological impact and results in a greater reduction in TPR, as well as the incidence of uncomplicated and severe malaria in CU5.
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Affiliation(s)
- Donal Bisanzio
- RTI International, Washington, District of Columbia, USA
| | | | - Alioune Camara
- Programme National de la Lutte contre le Paludisme, Ministère de la Santé et de l'Hygiène Publique, Conakry, Guinea
| | | | | | | | | | - Lamine Bangoura
- President's Malaria Initiative, US Agency for International Development, Conakry, Guinea
| | - Eliane Mbounga
- President's Malaria Initiative, US Agency for International Development, Conakry, Guinea
| | - Lia S Florey
- US Agency for International Development, Washington, District of Columbia, USA
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Gatiba P, Laury J, Steinhardt L, Hwang J, Thwing JI, Zulliger R, Emerson C, Gutman JR. Contextual Factors to Improve Implementation of Malaria Chemoprevention in Children: A Systematic Review. Am J Trop Med Hyg 2024; 110:69-78. [PMID: 38081055 DOI: 10.4269/ajtmh.23-0478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/15/2023] [Indexed: 01/05/2024] Open
Abstract
Malaria remains a leading cause of childhood morbidity and mortality in sub-Saharan Africa, particularly among children under 5 years of age. To help address this challenge, the WHO recommends chemoprevention for certain populations. For children and infants, the WHO recommends seasonal malaria chemoprevention (SMC), perennial malaria chemoprevention (PMC; formerly intermittent preventive treatment in infants [IPTi]), and, more recently, intermittent preventive treatment in school children (IPTsc). This review describes the contextual factors, including feasibility, acceptability, health equity, financial considerations, and values and preferences, that impact implementation of these strategies. A systematic search was conducted on July 5, 2022, and repeated April 13, 2023, to identify relevant literature. Two reviewers independently screened titles for eligibility, extracted data from eligible articles, and identified and summarized themes. Of 6,295 unique titles identified, 65 were included. The most frequently evaluated strategy was SMC (n = 40), followed by IPTi (n = 18) and then IPTsc (n = 6). Overall, these strategies were highly acceptable, although with IPTsc, there were community concerns with providing drugs to girls of reproductive age and the use of nonmedical staff for drug distribution. For SMC, door-to-door delivery resulted in higher coverage, improved caregiver acceptance, and reduced cost. Lower adherence was noted when caregivers were charged with giving doses 2 and 3 unsupervised. For SMC and IPTi, travel distances and inclement weather limited accessibility. Sensitization and caregiver education efforts, retention of high-quality drug distributors, and improved transportation were key to improving coverage. Additional research is needed to understand the role of community values and preferences in chemoprevention implementation.
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Affiliation(s)
- Peris Gatiba
- Public Health Institute, Oakland, California
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jessica Laury
- Public Health Institute, Oakland, California
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Laura Steinhardt
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jimee Hwang
- U.S. President's Malaria Initiative, Malaria Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Julie I Thwing
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Rose Zulliger
- U.S. President's Malaria Initiative, United States Agency for International Development, Washington, District of Columbia
| | - Courtney Emerson
- U.S. President's Malaria Initiative, Malaria Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Julie R Gutman
- Malaria Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia
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Kabeya TK, Kasongo JCM, Matumba NB, Tshibangu DI, Garcia-Morzon LA, Burgueño E. Impact of mass distribution of long-lasting insecticide nets on the incidence of malaria in Lomami, Democratic Republic of Congo: a study based on electronic health record data (2018 - 2019). Pan Afr Med J 2023; 45:89. [PMID: 37663637 PMCID: PMC10474805 DOI: 10.11604/pamj.2023.45.89.33099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 05/16/2023] [Indexed: 09/05/2023] Open
Abstract
Introduction holoendemic, malaria remains one of the major public health problems in Lomami Province in the Democratic Republic of Congo (DRC). To fight against it, a free mass distribution of long-lasting insecticide nets (LLINs) was organized in July 2019 throughout the province. The present study aimed to assess the incidence of malaria and its impact on anaemia of children from 0 to 59 months in this region before and after this intervention. Methods we had conducted a retrospective observational study from June to December 2018 and June to December 2019. The data were collected on District Health Information System version two (DHIS2) and analyzed with T-tests to compare the incidence rates before (second semester 2018) and after the distribution of LLINs (second semester 2019). Results the evolution of malaria cases immediately dropped after the distribution campaign. The incidence rates per 1,000 inhabitants in 2018 and 2019 were 106 and 107 respectively in the general population; 302 versus 305 in children aged 0 to 59 months and 219 versus 209 in pregnant women. The differences in incidence were not statistically significant with p values 0.497, 0.4602, and 0.3097 respectively. However, it was observed that the decrease in malaria cases led to a decrease in anaemia cases in general. Conclusion the LLIN distribution campaign did not decrease the incidence of malaria. The synergy of preventive interventions to reduce the incidence of malaria remains key.
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Affiliation(s)
- Theddy Kazadi Kabeya
- School of Public Health, University of Mwene Ditu, Lomami, Democratic Republic of Congo
- Health Regional Division, Kabinda, Lomami, Democratic Republic of Congo
| | - Jean Claude Musasa Kasongo
- School of Public Health, University of Mwene Ditu, Lomami, Democratic Republic of Congo
- Mwene-Ditu Health Zone, Lomami, Democratic Republic of Congo
| | | | | | | | - Eduardo Burgueño
- Centre Médical Vésale, Ngaliema, Kinshasa, Democratic Republic of Congo
- School of Medicine, Official University of Mbujimayi, Kasai-Oriental, Democratic Republic of Congo
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Ogbulafor N, Uhomoibhi P, Shekarau E, Nikau J, Okoronkwo C, Fanou NML, Mbaye IM, Ndiaye JL, Tchouatieu AM, Poku-Awuku A, Merle C, Scott S, Milligan P, Ali A, Yusuf HE, Oguche S, Dahiru T. Facilitators and barriers to seasonal malaria chemoprevention (SMC) uptake in Nigeria: a qualitative approach. Malar J 2023; 22:120. [PMID: 37041516 PMCID: PMC10088202 DOI: 10.1186/s12936-023-04547-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 03/30/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND SMC was adopted in Nigeria in 2014 and by 2021 was being implemented in 18 states, over four months between June and October by 143000 community drug distributors (CDDs) to a target population of 23million children. Further expansion of SMC is planned, extending to 21 states with four or five monthly cycles. In view of this massive scale-up, the National Malaria Elimination Programme undertook qualitative research in five states shortly after the 2021 campaign to understand community attitudes to SMC so that these perspectives inform future planning of SMC delivery in Nigeria. METHODS In 20 wards representing urban and rural areas with low and high SMC coverage in five states, focus group discussions were held with caregivers, and in-depth interviews conducted with community leaders and community drug distributors. Interviews were also held with local government area and State malaria focal persons and at national level with the NMEP coordinator, and representatives of partners working on SMC in Nigeria. Interviews were recorded and transcribed, those in local languages translated into English, and transcripts analysed using NVivo software. RESULTS In total, 84 focus groups and 106 interviews were completed. Malaria was seen as a major health concern, SMC was widely accepted as a key preventive measure, and community drug distributors (CDDs) were generally trusted. Caregivers preferred SMC delivered door-to-door to the fixed-point approach, because it allowed them to continue daily tasks, and allowed time for the CDD to answer questions. Barriers to SMC uptake included perceived side-effects of SMC drugs, a lack of understanding of the purpose of SMC, mistrust and suspicions that medicines provided free may be unsafe or ineffective, and local shortages of drugs. CONCLUSIONS Recommendations from this study were shared with all community drug distributors and others involved in SMC campaigns during cascade training in 2022, including the need to strengthen communication about the safety and effectiveness of SMC, recruiting distributors from the local community, greater involvement of state and national level pharmacovigilance coordinators, and stricter adherence to the planned medicine allocations to avoid local shortages. The findings reinforce the importance of retaining door-to-door delivery of SMC.
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Affiliation(s)
| | | | | | - Jamilu Nikau
- National Malaria Elimination Programme (NMEP), Abuja, Nigeria
| | | | | | | | | | | | | | | | - Susana Scott
- London School of Hygiene & Tropical Medicine, London, UK
| | - Paul Milligan
- London School of Hygiene & Tropical Medicine, London, UK
| | - Aminu Ali
- Dept of Sociology, Bayero University of Kano, Kano, Nigeria
| | | | | | - Tukur Dahiru
- Dept of Community Medicine, Ahmadu Bello University, Zaria, Nigeria
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Abbas F, Monroe A, Kiware S, Khamis M, Serbantez N, Al- Mafazy AW, Mohamed F, Kigadye E. Stakeholder perspectives on a door-to-door intervention to increase community engagement for malaria elimination in Zanzibar. Malar J 2023; 22:51. [PMID: 36774478 PMCID: PMC9921074 DOI: 10.1186/s12936-023-04474-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 01/29/2023] [Indexed: 02/13/2023] Open
Abstract
BACKGROUND Malaria remains a major public health problem in sub-Saharan Africa. The 2021 World Health Organization (WHO) World Malaria Report indicates a slowing in the decline of malaria incidence since 2015. Malaria prevalence in Zanzibar has been maintained at less than 1% since 2010, however from 2018 to 2021, the annual number of reported malaria cases has gradually increased from 4106 to 9290. Community engagement has been emphasized by the WHO for reducing malaria transmission. To better understand the potential for a door-to-door approach for malaria, a three-month pilot programme was carried out. This qualitative study aimed at understanding stakeholder experiences with the pilot programme and considerations for its implementation. METHODS Through multistage sampling, four shehias (wards-the lowest administrative structure) with comparatively high (> 1.9 per 1000) and four with low (< 1 per 1000) incidence of local malaria cases were selected and involved in a door-to-door pilot intervention. The qualitative study was conducted after the pilot intervention and employed focus group discussions and in-depth interviews. All field notes were written on paper and audiotaped using digital audio-recorders. Summaries were developed by integrating field notes with reviews of recordings; themes were developed based on the topics identified a priori. Responses for each theme were summarized using an iterative process. RESULTS Most community members reported high levels of acceptance of door-to-door interventions. Some factors that might affect implementation of door-to-door include, low risk perception of the disease, local beliefs and practice, lack of initiative from the programme level to involve communities, and political instability during the election period. All Community Health Volunteers (CHVs) recommended this approach for community engagement, however, ensuring adequate resources was identified as a key factor for ensuring its sustainability. CONCLUSION The door-to-door intervention was perceived as helpful for promoting community engagement. There are several factors to consider including ensuring that CHVs are provided with adequate education, regular supervision, and have access to essential resources. Community leaders should be fully involved in choosing CHVs that are acceptable to the community. To ensure sustainability, the government should allocate sufficient resources and improve coordination systems.
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Affiliation(s)
- Faiza Abbas
- Zanzibar Malaria Elimination Programme, Zanzibar, Tanzania. .,Open University of Tanzania, Dar es Salaam, Tanzania.
| | - April Monroe
- grid.449467.c0000000122274844Johns Hopkins Center for Communication Programs, Baltimore, MD USA
| | - Samson Kiware
- grid.414543.30000 0000 9144 642XIfakara Health Institute, Dar es Salaam, United Republic of Tanzania ,Pan African Mosquito Control Association (PAMCA), Nairobi, Kenya
| | - Mwinyi Khamis
- Zanzibar Malaria Elimination Programme, Zanzibar, Tanzania
| | - Naomi Serbantez
- U.S. President’s Malaria Initiative, U.S. Agency for International Development, Dar es Salaam, Tanzania
| | | | - Fauzia Mohamed
- grid.442447.50000 0001 0819 3175Open University of Tanzania, Dar es Salaam, Tanzania
| | - Emmanuel Kigadye
- grid.442447.50000 0001 0819 3175Open University of Tanzania, Dar es Salaam, Tanzania
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Bakai TA, Thomas A, Iwaz J, Atcha-Oubou T, Tchadjobo T, Khanafer N, Rabilloud M, Voirin N. Effectiveness of seasonal malaria chemoprevention in three regions of Togo: a population-based longitudinal study from 2013 to 2020. Malar J 2022; 21:400. [PMID: 36587191 PMCID: PMC9804945 DOI: 10.1186/s12936-022-04434-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 12/27/2022] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND In 2012, the World Health Organization (WHO) recommended seasonal malaria chemoprevention (SMC) in areas of high seasonal transmission. Though implemented since 2013, the effectiveness of SMC in Togo was never evaluated. METHODS This study concerned routine data from 2013 to 2020 mass SMC campaigns for children under five in all health facilities of three Regions of Togo. Treatment coverage, reasons for non-treatment, and SMC-attributable adverse reactions were analysed per year and treatment round. Random effect logistic models estimated SMC effectiveness per health district, year, and treatment round. RESULTS The overall coverage was 98% (7,971,877 doses for 8,129,668 children). Contraindication was the main reason for non-administration. Over the study period, confirmed malaria cases decreased from 11,269 (1st round of 2016) to 1395 (4th round of 2020). Only 2,398 adverse reactions were reported (prevalence: 3/10,000), but no severe Lyell syndrome or Stevens-Johnson-type skin reaction. Compared to 2016, malaria prevalence decrease was estimated at 22.6% in 2017 (p < 0.001) and 75% in 2020 (p < 0.001). SMC effectiveness ranged from 76.6% (2nd round) to 96.2% (4th round) comparison with the 1st round. CONCLUSIONS SMC reduced significantly malaria cases among children under five. The results reassure all actors and call for effort intensification to reach the WHO goals for 2030.
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Affiliation(s)
- Tchaa A. Bakai
- grid.25697.3f0000 0001 2172 4233Université de Lyon, Lyon, France ,grid.7849.20000 0001 2150 7757Université Lyon 1, 69100 Villeurbanne, France ,grid.413852.90000 0001 2163 3825Service de Biostatistique-Bioinformatique, Pôle Santé Publique, Hospices Civils de Lyon, 69003 Lyon, France ,grid.462854.90000 0004 0386 3493Équipe Biostatistique-Santé, Laboratoire de Biométrie et Biologie Évolutive, CNRS UMR 5558, 69100 Villeurbanne, France ,EPIMOD (Epidemiology and Modelling in Infectious Diseases), 01240 Lent, France ,Programme National de Lutte contre le Paludisme (PNLP), 01 BP 518, Lomé, Togo ,grid.412180.e0000 0001 2198 4166Service d’Hygiène, Épidémiologie et Prévention, Hôpital Édouard Herriot, Hospices Civils de Lyon, 69003 Lyon, France
| | - Anne Thomas
- grid.25697.3f0000 0001 2172 4233Université de Lyon, Lyon, France ,grid.7849.20000 0001 2150 7757Université Lyon 1, 69100 Villeurbanne, France ,grid.413852.90000 0001 2163 3825Service de Biostatistique-Bioinformatique, Pôle Santé Publique, Hospices Civils de Lyon, 69003 Lyon, France ,grid.462854.90000 0004 0386 3493Équipe Biostatistique-Santé, Laboratoire de Biométrie et Biologie Évolutive, CNRS UMR 5558, 69100 Villeurbanne, France ,EPIMOD (Epidemiology and Modelling in Infectious Diseases), 01240 Lent, France
| | - Jean Iwaz
- grid.25697.3f0000 0001 2172 4233Université de Lyon, Lyon, France ,grid.7849.20000 0001 2150 7757Université Lyon 1, 69100 Villeurbanne, France ,grid.413852.90000 0001 2163 3825Service de Biostatistique-Bioinformatique, Pôle Santé Publique, Hospices Civils de Lyon, 69003 Lyon, France ,grid.462854.90000 0004 0386 3493Équipe Biostatistique-Santé, Laboratoire de Biométrie et Biologie Évolutive, CNRS UMR 5558, 69100 Villeurbanne, France
| | - Tinah Atcha-Oubou
- Programme National de Lutte contre le Paludisme (PNLP), 01 BP 518, Lomé, Togo
| | - Tchassama Tchadjobo
- Programme National de Lutte contre le Paludisme (PNLP), 01 BP 518, Lomé, Togo
| | - Nagham Khanafer
- grid.412180.e0000 0001 2198 4166Service d’Hygiène, Épidémiologie et Prévention, Hôpital Édouard Herriot, Hospices Civils de Lyon, 69003 Lyon, France
| | - Muriel Rabilloud
- grid.25697.3f0000 0001 2172 4233Université de Lyon, Lyon, France ,grid.7849.20000 0001 2150 7757Université Lyon 1, 69100 Villeurbanne, France ,grid.413852.90000 0001 2163 3825Service de Biostatistique-Bioinformatique, Pôle Santé Publique, Hospices Civils de Lyon, 69003 Lyon, France ,grid.462854.90000 0004 0386 3493Équipe Biostatistique-Santé, Laboratoire de Biométrie et Biologie Évolutive, CNRS UMR 5558, 69100 Villeurbanne, France
| | - Nicolas Voirin
- EPIMOD (Epidemiology and Modelling in Infectious Diseases), 01240 Lent, France
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Manga IA, BA MS, Tairou F, Seck A, Kouevidjin E, Sow D, Sylla K, Ndiaye M, Ba Fall F, Gueye AB, Diallo I, Ndiop M, Ba M, Tine RC, Gaye O, Faye B, Ndiaye JLA. Malaria parasite carriage before and two years after the implementation of seasonal malaria chemoprevention: a case study of the Saraya health district, southern Senegal. Wellcome Open Res 2022; 7:179. [PMID: 37521536 PMCID: PMC10375055 DOI: 10.12688/wellcomeopenres.17888.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2022] [Indexed: 08/01/2023] Open
Abstract
Background : Seasonal malaria chemoprevention (SMC) has been adopted and implemented in the southern regions of Senegal in children aged between three and 120 months since 2013. Scaling up this strategy requires its evaluation to assess the impact. This study was carried out to determine the dynamics of Plasmodium falciparum carriage before and after two years of SMC implementation. Methods : Four household surveys were conducted in villages in the health district of Saraya, which is a SMC implementation area in Senegal. These villages were selected using probability proportional to size sampling. Each selected village was divided into segments containing at least 50 children. In each segment, a household questionnaire was administered to the parents or legal representatives of children aged three to 120 months. Blood smears were collected to determine P. falciparum prevalence by microscopy one month before the first round of SMC, one month after the last round of the first SMC campaign and two years after the start of the implementation. Results : A total of 2008 children were included with a mean average age of 4.81 (+/-2.73) years. Of the study population, 50.33% were more than five years old and 50.3% were male. In 2013, mosquito net ownership was 99.4 % before the SMC campaign and 97.4% after. In 2015, it was 36.6% before and 45.8% after the campaign. In 2013, the prevalence of plasmodium carriage was 11.8% before and 6.1% after the SMC campaign. In 2015, the prevalence was 4.9% before the administration of SMC and this increased up to 15.3% after. Malaria prevalence was high among children over five years old and in boys. Conclusions : The decrease in Plasmodium falciparum parasite prevalence, which subsequently increased after two years of SMC implementation in this study, suggests adding an extra cycle of the SMC or adjusting the administration period.
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Affiliation(s)
- Isaac Akhenaton Manga
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Mamadou Sarifou BA
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
- Ministry of Health and Social Action, Dakar, Senegal
| | - Fassiatou Tairou
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Amadou Seck
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Ekoue Kouevidjin
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Doudou Sow
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Khadime Sylla
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Magatte Ndiaye
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | | | | | | | | | - Mady Ba
- National Malaria Control Program, Dakar, Senegal
| | - Roger Clément Tine
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Omar Gaye
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Babacar Faye
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
| | - Jean Louis Abdourahim Ndiaye
- Parasitology-Mycology Department, Faculty of Medicine, Pharmacy and Ondontology, Cheikh Anta Diop University of Dakar, Dakar, Senegal
- Service of Parasitology Mycology, Department of Medical Biology, UFR Santé/University Iba Der Thiam, Thies, Senegal
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MANGA IA, BA MS, Tairou F, Seck A, Kouevidjin E, Sow D, Sylla K, Ndiaye M, Ba Fall F, Gueye AB, Diallo I, Ndiop M, Ba M, Tine RC, Gaye O, Faye B, Ndiaye JLA. Malaria parasite carriage before and two years after the implementation of seasonal malaria chemoprevention: a case study of the Saraya health district, southern Senegal. Wellcome Open Res 2022. [DOI: 10.12688/wellcomeopenres.17888.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Seasonal malaria chemoprevention (SMC) has been adopted and implemented in the southern regions of Senegal in children aged between three and 120 months since 2013. Scaling up this strategy requires its evaluation to assess the impact. This study was carried out to determine the dynamics of Plasmodium falciparum carriage before and after two years of SMC implementation. Methods: Four household surveys were conducted in villages in the health district of Saraya, which is a SMC implementation area in Senegal. These villages were selected using probability proportional to size sampling. Each selected village was divided into segments containing at least 50 children. In each segment, a household questionnaire was administered to the parents or legal representatives of children aged three to 120 months. Blood smears were collected to determine P. falciparum prevalence by microscopy one month before the first round of SMC, one month after the last round of the first SMC campaign and two years after the start of the implementation. Results: A total of 2008 children were included with a mean average age of 4.81 (+/-2.73) years. Of the study population, 50.33% were more than five years old and 50.3% were male. In 2013, mosquito net ownership was 99.4 % before the SMC campaign and 97.4% after. In 2015, it was 36.6% before and 45.8% after the campaign. In 2013, the prevalence of plasmodium carriage was 11.8% before and 6.1% after the SMC campaign. In 2015, the prevalence was 4.9% before the administration of SMC and this increased up to 15.3% after. Malaria prevalence was high among children over five years old and in boys. Conclusions: The decrease in Plasmodium falciparum parasite prevalence, which subsequently increased after two years of SMC implementation in this study, suggests adding an extra cycle of the SMC or adjusting the administration period.
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Baird JK, Warsame M, Recht J. Survey and Analysis of Chemoprophylaxis Policies for Domestic Travel in Malaria-Endemic Countries. Trop Med Infect Dis 2022; 7:tropicalmed7070121. [PMID: 35878133 PMCID: PMC9325288 DOI: 10.3390/tropicalmed7070121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/23/2022] [Accepted: 05/31/2022] [Indexed: 02/04/2023] Open
Abstract
The prevention of malaria in travelers with the use of antimalarials often occurs in connection with international travel to areas of significant risk of infection. Although these travelers sometimes cause outbreaks in their malaria-free home countries, the cardinal objective of prescribed chemoprophylaxis is to protect the traveler from patent malaria during travel. Here we consider the chemoprophylaxis of domestic travelers from malaria-free but -receptive areas within malaria-endemic countries. The main objective in this setting is the protection of those areas from reintroduced malaria transmission. In order to better understand policy and practices in this regard, we surveyed malaria prevention and treatment guidelines of 36 malaria-endemic countries and 2 that have recently eliminated malaria (Sri Lanka, China) for recommendations regarding malaria chemoprophylaxis for domestic travel. Among them, just 8 provided specific and positive recommendations, 1 recommended without specific guidance, and 4 advised against the practice. Most nations (25/38; 66%) did not mention chemoprophylaxis for domestic travel, though many of those did offer guidance for international travel. The few positive recommendations for domestic travel were dominated by the suppressive prophylaxis options of daily doxycycline or atovaquone-proguanil or weekly mefloquine. The incomplete protection afforded by these strategies, along with impractical dosing in connection with the typically brief domestic travel, may in part explain the broad lack of policies and practices across malaria-endemic nations regarding chemoprophylaxis.
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Affiliation(s)
- John Kevin Baird
- Eijkman-Oxford Clinical Research Unit, Eijkman Institute of Molecular Biology, Jakarta 10430, Indonesia
- The Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, UK
- Correspondence:
| | - Marian Warsame
- School of Public Health and Social Medicine, Institute of Medicine, Gothenburg University, 41390 Gothenburg, Sweden;
| | - Judith Recht
- Independent Researcher, North Bethesda, MD 20852, USA;
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12
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Moukénet A, Donovan L, Honoré B, Baker K, Smith H, Richardson S, Ward C. Extending Delivery of Seasonal Malaria Chemoprevention to Children Aged 5-10 Years in Chad: A Mixed-Methods Study. GLOBAL HEALTH, SCIENCE AND PRACTICE 2022; 10:e2100161. [PMID: 35294375 PMCID: PMC8885336 DOI: 10.9745/ghsp-d-21-00161] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 12/22/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND To prevent malaria among children aged 3-59 months in areas with high seasonal transmission, seasonal malaria chemoprevention (SMC) is recommended. In Chad, there is evidence of SMC administration to children aged older than 5 years (referred to as "leakage"). This study aimed to understand the reasons for leakage and explore the feasibility and acceptability of extending the delivery of SMC to children aged 5-10 years in Chad. METHODS We conducted a mixed-methods study in Massaguet health district with a cross-sectional survey to determine SMC coverage for children aged up to 10 years after SMC cycles 1 and 3 (n=90 and n=100 caregivers surveyed, respectively) and at the end of cycle 4 (n=101 caregivers surveyed). We conducted 14 key informant interviews at the national and district level and 8 focus group discussions with community distributors and caregivers. RESULTS In the compounds surveyed, there were no children aged 5-10 years in cycle 1. In cycles 3 (n=1 children) and 4 (n=16 children), there was 100% (95% confidence interval [CI]=2.5, 100.0) and 62.5% (95% CI=35.4, 84.8) coverage of SMC in children aged 5-10 years, respectively. Extension of SMC to older children was considered acceptable, but there were concerns about feasibility and ensuring the sustainability of the current program in children aged 3-59 months. Key informants acknowledged the need to secure additional funding to pilot SMC in older age groups and were uncertain about the impact of the current SMC program at scale. CONCLUSION Key informants considered extending SMC to children aged 5-10 years acceptable but did not deem it a current priority. They expressed an urgent need to address leakage and reinforce both the sustainability and quality of the current SMC program.
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Affiliation(s)
| | | | | | | | - Helen Smith
- Independent consultant, International Health Consulting Services Ltd., United Kingdom
| | | | - Charlotte Ward
- London School of Hygiene and Tropical Medicine, United Kingdom.
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13
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Yaro JB, Tiono AB, Ouedraogo A, Lambert B, Ouedraogo ZA, Diarra A, Traore A, Lankouande M, Soulama I, Sanou A, Worrall E, Agboraw E, Sagnon N, Ranson H, Churcher TS, Lindsay SW, Wilson AL. Risk of Plasmodium falciparum infection in south-west Burkina Faso: potential impact of expanding eligibility for seasonal malaria chemoprevention. Sci Rep 2022; 12:1402. [PMID: 35082312 PMCID: PMC8791962 DOI: 10.1038/s41598-022-05056-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/10/2021] [Indexed: 11/10/2022] Open
Abstract
Burkina Faso has one of the highest malaria burdens in sub-Saharan Africa despite the mass deployment of insecticide-treated nets (ITNs) and use of seasonal malaria chemoprevention (SMC) in children aged up to 5 years. Identification of risk factors for Plasmodium falciparum infection in rural Burkina Faso could help to identify and target malaria control measures. A cross-sectional survey of 1,199 children and adults was conducted during the peak malaria transmission season in the Cascades Region of south-west Burkina Faso in 2017. Logistic regression was used to identify risk factors for microscopically confirmed P. falciparum infection. A malaria transmission dynamic model was used to determine the impact on malaria cases averted of administering SMC to children aged 5-15 year old. P. falciparum prevalence was 32.8% in the study population. Children aged 5 to < 10 years old were at 3.74 times the odds (95% CI = 2.68-5.22, P < 0.001) and children aged 10 to 15 years old at 3.14 times the odds (95% CI = 1.20-8.21, P = 0.02) of P. falciparum infection compared to children aged less than 5 years old. Administration of SMC to children aged up to 10 years is predicted to avert an additional 57 malaria cases per 1000 population per year (9.4% reduction) and administration to children aged up to 15 years would avert an additional 89 malaria cases per 1000 population per year (14.6% reduction) in the Cascades Region, assuming current coverage of pyrethroid-piperonyl butoxide ITNs. Malaria infections were high in all age strata, although highest in children aged 5 to 15 years, despite roll out of core malaria control interventions. Given the burden of infection in school-age children, extension of the eligibility criteria for SMC could help reduce the burden of malaria in Burkina Faso and other countries in the region.
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Affiliation(s)
- Jean Baptiste Yaro
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
- Department of Biosciences, Durham University, Durham, UK
| | - Alfred B Tiono
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Alphonse Ouedraogo
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Ben Lambert
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Z Amidou Ouedraogo
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Amidou Diarra
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Adama Traore
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Malik Lankouande
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Issiaka Soulama
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
- Institut de Recherche en Sciences de la Santé, Ouagadougou, Burkina Faso
| | - Antoine Sanou
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
- Institute of Biodiversity, Animal Health & Comparative Medicine, Glasgow University, Glasgow, UK
| | - Eve Worrall
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Efundem Agboraw
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - N'Fale Sagnon
- Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso
| | - Hilary Ranson
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Thomas S Churcher
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | | | - Anne L Wilson
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK.
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14
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Enato IG, Odunvbun ME. Uptake and usage of proguanil as malaria chemoprophylaxis and the socio-economic determinants of proguanil usage in children with sickle cell anemia in Benin City. Niger J Clin Pract 2022; 25:903-908. [DOI: 10.4103/njcp.njcp_1938_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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15
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Moukénet A, de Cola MA, Ward C, Beakgoubé H, Baker K, Donovan L, Laoukolé J, Richardson S. Health management information system (HMIS) data quality and associated factors in Massaguet district, Chad. BMC Med Inform Decis Mak 2021; 21:326. [PMID: 34809622 PMCID: PMC8609810 DOI: 10.1186/s12911-021-01684-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 10/27/2021] [Indexed: 12/01/2022] Open
Abstract
Background Quality data from Health Management Information Systems (HMIS) are important for tracking the effectiveness of malaria control interventions. However, HMIS data in many resource-limited settings do not currently meet standards set by the World Health Organization (WHO). We aimed to assess HMIS data quality and associated factors in Chad. Methods A cross-sectional study was conducted in 14 health facilities in Massaguet district. Data on children under 15 years were obtained from the HMIS and from the external patient register covering the period January–December 2018. An additional questionnaire was administered to 16 health centre managers to collect data on contextual variables. Patient registry data were aggregated and compared with the HMIS database at district and health centre level. Completeness and accuracy indicators were calculated as per WHO guidelines. Multivariate logistic regressions were performed on the Verification Factor for attendance, suspected and confirmed malaria cases for three age groups (1 to < 12 months, 1 to < 5 years and 5 to < 15 years) to identify associations between health centre characteristics and data accuracy. Results Health centres achieved a high level of data completeness in HMIS. Malaria data were over-reported in HMIS for children aged under 15 years. There was an association between workload and higher odds of inaccuracy in reporting of attendance among children aged 1 to < 5 years (Odds ratio [OR]: 10.57, 95% CI 2.32–48.19) and 5– < 15 years (OR: 6.64, 95% CI 1.38–32.04). Similar association was found between workload and stock-outs in register books, and inaccuracy in reporting of malaria confirmed cases. Meanwhile, we found that presence of a health technician, and of dedicated staff for data management, were associated with lower inaccuracy in reporting of clinic attendance in children aged under five years. Conclusion Data completeness was high while the accuracy was low. Factors associated with data inaccuracy included high workload and the unavailability of required data collection tools. The results suggest that improvement in working conditions for clinic personnel may improve HMIS data quality. Upgrading from paper-based forms to a web-based HMIS may provide a solution for improving data accuracy and its utility for future evaluations of health interventions. Results from this study can inform the Ministry of Health and it partners on the precautions to be taken in the use of HMIS data and inform initiatives for improving its quality. Supplementary Information The online version contains supplementary material available at 10.1186/s12911-021-01684-7.
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Affiliation(s)
- Azoukalné Moukénet
- Malaria Consortium Chad Country Office, Angle Bureau de L'Entente Des Eglises (EEMET), Rue 2175, Porte 0150, B.P. 6180, N'Djamena, Chad
| | - Monica Anna de Cola
- Malaria Consortium, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK
| | - Charlotte Ward
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Honoré Beakgoubé
- Malaria Consortium Chad Country Office, Angle Bureau de L'Entente Des Eglises (EEMET), Rue 2175, Porte 0150, B.P. 6180, N'Djamena, Chad
| | - Kevin Baker
- Malaria Consortium, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK
| | - Laura Donovan
- Malaria Consortium, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK
| | | | - Sol Richardson
- Malaria Consortium, The Green House, 244-254 Cambridge Heath Road, London, E2 9DA, UK.
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Nice J, Nahusenay H, Eckert E, Eisele TP, Ashton RA. Estimating malaria chemoprevention and vector control coverage using program and campaign data: A scoping review of current practices and opportunities. J Glob Health 2021; 10:020413. [PMID: 33110575 PMCID: PMC7568932 DOI: 10.7189/jogh.10.020413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Accurate estimation of intervention coverage is a vital component of malaria program monitoring and evaluation, both for process evaluation (how well program targets are achieved), and impact evaluation (whether intervention coverage had an impact on malaria burden). There is growing interest in maximizing the utility of program data to generate interim estimates of intervention coverage in the periods between large-scale cross-sectional surveys (the gold standard). As such, this study aimed to identify relevant concepts and themes that may guide future optimization of intervention coverage estimation using routinely collected data, or data collected during and following intervention campaigns, with a particular focus on strategies to define the denominator. Methods We conducted a scoping review of current practices to estimate malaria intervention coverage for insecticide-treated nets (ITNs); indoor residual spray (IRS); intermittent preventive treatment in pregnancy (IPTp); mass drug administration (MDA); and seasonal malaria chemoprevention (SMC) interventions; case management was excluded. Multiple databases were searched for relevant articles published from January 1, 2015 to June 1, 2018. Additionally, we identified and included other guidance relevant to estimating population denominators, with a focus on innovative techniques. Results While program data have the potential to provide intervention coverage data, there are still substantial challenges in selecting appropriate denominators. The review identified a lack of consistency in how coverage was defined and reported for each intervention type, with denominator estimation methods not clearly or consistently reported, and denominator estimates rarely triangulated with other data sources to present the feasible range of denominator values and consequently the range of likely coverage estimates. Conclusions Though household survey-based estimates of intervention coverage remain the gold standard, efforts should be made to further standardize practices for generating interim measurements of intervention coverage from program data, and for estimating and reporting population denominators. This includes fully describing any projections or adjustments made to existing census or population data, exploring opportunities to validate available data by comparing with other sources, and explaining how the denominator has been restricted (or not) to reflect exclusion criteria.
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Affiliation(s)
- Johanna Nice
- MEASURE Evaluation, Centre for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
| | - Honelgn Nahusenay
- MEASURE Evaluation, Centre for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
| | - Erin Eckert
- U.S. President's Malaria Initiative, United States Agency for International Development, Washington, D.C., USA.,RTI International, Washington, D.C., USA
| | - Thomas P Eisele
- Centre for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
| | - Ruth A Ashton
- MEASURE Evaluation, Centre for Applied Malaria Research and Evaluation, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA
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Ko KK, Pumpaibool T, Wynn MMM, Win Y, Kyi TM, Aung PL. Door-to-Door Eye Health Education to Improve Knowledge, Attitude, and Uptake of Eyecare Services Among Elderly with Cataracts: A Quasi-Experimental Study in the Central Tropical Region, Myanmar. Clin Ophthalmol 2021; 15:815-824. [PMID: 33658757 PMCID: PMC7920616 DOI: 10.2147/opth.s287257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/15/2021] [Indexed: 11/23/2022] Open
Abstract
Introduction Cataract-related blindness is routinely reported globally. This study aimed to measure the effect of door-to-door eye health education in improving knowledge and attitude toward cataracts and the use of eyecare services among the elderly residing in a rural area of Naypyitaw Union Territory, Myanmar. Methods A quasi-experimental study design that used intervention and control groups was employed in Lewe Township from November 2018 to April 2019. Stratified sampling method was used to select lists of patients diagnosed with cataracts via a township-wide prevalence survey of eye diseases. A total of 56 elderly people with cataracts were involved in each group. The intervention group received door-to-door eye health education for 3 consecutive months. The data were collected using pre- and post-intervention surveys. Descriptive statistics for general characteristics as well as Chi-squared tests and multivariate analysis of variance for significant differences between knowledge and attitude scores of the two groups were analyzed. Results Both groups represented similarities in socio-economic characteristics, pre-existing knowledge and attitude levels, and eyecare services use. During the baseline study, the mean knowledge score in the intervention group was 7.8 and after the intervention, it increased to 10.67. Attitude score increased from 4.51 to 7.55. Among the control group, the scores remained unchanged. For use of eyecare services in the intervention group, 35.7% of patients sought eyecare services before the intervention, but after, 85.7% accessed eyecare services. Among them, 78.6% were satisfied with the treatment outcome. Further, there was a significant difference in knowledge and attitude between the control group and the intervention group (p-value <0.05), representing a medium effect of the intervention on improving knowledge and attitude level. Conclusion Door-to-door eyecare education significantly increased knowledge and attitude toward cataracts and the use of eyecare services among the elderly with cataracts. Intervention might be effective in improving the use of eyecare services and reduction of avoidable blindness due to cataracts.
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Affiliation(s)
- Kyaw Ko Ko
- College of Public Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Tepanata Pumpaibool
- College of Public Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Maung Maung Myo Wynn
- Department of Public Health, Ministry of Health and Sports, Naypyitaw, 15032, Myanmar
| | - Ye Win
- Department of Public Health, Ministry of Health and Sports, Naypyitaw, 15032, Myanmar
| | - Tin Moe Kyi
- Ophthalmology Ward, General Hospital, Hinthada, 10061, Myanmar
| | - Pyae Linn Aung
- College of Public Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
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18
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Ouédraogo AL, Zhang J, Tinto H, Valéa I, Wenger EA. A microplanning model to improve door-to-door health service delivery: the case of Seasonal Malaria Chemoprevention in Sub-Saharan African villages. BMC Health Serv Res 2020; 20:1128. [PMID: 33287825 PMCID: PMC7720067 DOI: 10.1186/s12913-020-05972-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 11/25/2020] [Indexed: 11/26/2022] Open
Abstract
Background Malaria incidence has plateaued in Sub-Saharan Africa despite Seasonal Malaria Chemoprevention’s (SMC) introduction. Community health workers (CHW) use a door-to-door delivery strategy to treat children with SMC drugs, but for SMC to be as effective as in clinical trials, coverage must be high over successive seasons. Methods We developed and used a microplanning model that utilizes population raster to estimate population size, generates optimal households visit itinerary, and quantifies SMC coverage based on CHWs’ time investment for treatment and walking. CHWs’ performance under current SMC deployment mode was assessed using CHWs’ tracking data and compared to microplanning in villages with varying demographics and geographies. Results Estimates showed that microplanning significantly reduces CHWs’ walking distance by 25%, increases the number of visited households by 36% (p < 0.001) and increases SMC coverage by 21% from 37.3% under current SMC deployment mode up to 58.3% under microplanning (p < 0.001). Optimal visit itinerary alone increased SMC coverage up to 100% in small villages whereas in larger or hard-to-reach villages, filling the gap additionally needed an optimization of the CHW ratio. Conclusion We estimate that for a pair of CHWs, the daily optimal number of visited children (assuming 8.5mn spent per child) and walking distance should not exceed 45 (95% CI 27–62) and 5 km (95% CI 3.2–6.2) respectively. Our work contributes to extend SMC coverage by 21–63% and may have broader applicability for other community health programs. Supplementary Information The online version contains supplementary material available at 10.1186/s12913-020-05972-2.
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Affiliation(s)
- André Lin Ouédraogo
- Institute for Disease Modeling, Bill and Melinda Gates Foundation, 500 5th Ave N, Seattle, WA, 98109, USA.
| | - Julie Zhang
- Department of Mathematics and Statistics, University of Washington, Seattle, WA, USA.,Department of Statistics, Stanford University, Palo Alto, CA, USA
| | - Halidou Tinto
- Institut de Recherche en Sciences de la Santé, Clinical Research Unit of Nanoro, Nanoro, Burkina Faso
| | - Innocent Valéa
- Institut de Recherche en Sciences de la Santé, Clinical Research Unit of Nanoro, Nanoro, Burkina Faso
| | - Edward A Wenger
- Institute for Disease Modeling, Bill and Melinda Gates Foundation, 500 5th Ave N, Seattle, WA, 98109, USA
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19
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Dieng S, Ba EH, Cissé B, Sallah K, Guindo A, Ouedraogo B, Piarroux M, Rebaudet S, Piarroux R, Landier J, Sokhna C, Gaudart J. Spatio-temporal variation of malaria hotspots in Central Senegal, 2008-2012. BMC Infect Dis 2020; 20:424. [PMID: 32552759 PMCID: PMC7301493 DOI: 10.1186/s12879-020-05145-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 06/10/2020] [Indexed: 12/01/2022] Open
Abstract
Background In malaria endemic areas, identifying spatio-temporal hotspots is becoming an important element of innovative control strategies targeting transmission bottlenecks. The aim of this work was to describe the spatio-temporal variation of malaria hotspots in central Senegal and to identify the meteorological, environmental, and preventive factors that influence this variation. Methods This study analysed the weekly incidence of malaria cases recorded from 2008 to 2012 in 575 villages of central Senegal (total population approximately 500,000) as part of a trial of seasonal malaria chemoprevention (SMC). Data on weekly rainfall and annual vegetation types were obtained for each village through remote sensing. The time series of weekly malaria incidence for the entire study area was divided into periods of high and low transmission using change-point analysis. Malaria hotspots were detected during each transmission period with the SaTScan method. The effects of rainfall, vegetation type, and SMC intervention on the spatio-temporal variation of malaria hotspots were assessed using a General Additive Mixed Model. Results The malaria incidence for the entire area varied between 0 and 115.34 cases/100,000 person weeks during the study period. During high transmission periods, the cumulative malaria incidence rate varied between 7.53 and 38.1 cases/100,000 person-weeks, and the number of hotspot villages varied between 62 and 147. During low transmission periods, the cumulative malaria incidence rate varied between 0.83 and 2.73 cases/100,000 person-weeks, and the number of hotspot villages varied between 10 and 43. Villages with SMC were less likely to be hotspots (OR = 0.48, IC95%: 0.33–0.68). The association between rainfall and hotspot status was non-linear and depended on both vegetation type and amount of rainfall. The association between village location in the study area and hotspot status was also shown. Conclusion In our study, malaria hotspots varied over space and time according to a combination of meteorological, environmental, and preventive factors. By taking into consideration the environmental and meteorological characteristics common to all hotspots, monitoring of these factors could lead targeted public health interventions at the local level. Moreover, spatial hotspots and foci of malaria persisting during LTPs need to be further addressed. Trial registration The data used in this work were obtained from a clinical trial registered on July 10, 2008 at www.clinicaltrials.gov under NCT00712374.
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Affiliation(s)
- Sokhna Dieng
- Aix Marseille Univ, IRD, INSERM, SESSTIM, Marseille, France. .,Ecole des Hautes Etudes en Santé Publique, Rennes, France.
| | - El Hadj Ba
- UMR VITROME, Campus International IRD-UCAD de l'IRD, Dakar, Sénégal
| | - Badara Cissé
- Institut de Recherche en Santé, de Surveillance Épidémiologique et de Formation (IRESSEF) Diamniadio, Dakar, Sénégal
| | - Kankoe Sallah
- Aix Marseille Univ, IRD, INSERM, SESSTIM, Marseille, France.,AP-HP, Hôpital Bichat, Unité de Recherche Clinique PNVS, Paris, France
| | - Abdoulaye Guindo
- Aix Marseille Univ, IRD, INSERM, SESSTIM, Marseille, France.,Research and Training Center - Ogobara K Doumbo, FMOS-FAPH, Mali-NIAID-ICER, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
| | - Boukary Ouedraogo
- Aix Marseille Univ, IRD, INSERM, SESSTIM, Marseille, France.,Direction des Systèmes d'Information en santé, Ministère de la santé, Ouagadougou, Burkina Faso
| | - Martine Piarroux
- French Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France
| | - Stanislas Rebaudet
- APHM, Assistance Publique - Hôpitaux de Marseille, Marseille, France.,Hôpital Européen, Marseille, France
| | - Renaud Piarroux
- Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - Jordi Landier
- Aix Marseille Univ, IRD, INSERM, SESSTIM, Marseille, France
| | - Cheikh Sokhna
- UMR VITROME, Campus International IRD-UCAD de l'IRD, Dakar, Sénégal
| | - Jean Gaudart
- Aix Marseille Univ, APHM, INSERM, IRD, SESSTIM, Hop Timone, BioSTIC, Biostatistic & ICT, Marseille, France
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20
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Dieng S, Michel P, Guindo A, Sallah K, Ba EH, Cissé B, Carrieri MP, Sokhna C, Milligan P, Gaudart J. Application of Functional Data Analysis to Identify Patterns of Malaria Incidence, to Guide Targeted Control Strategies. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17114168. [PMID: 32545302 PMCID: PMC7312547 DOI: 10.3390/ijerph17114168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 11/16/2022]
Abstract
We introduce an approach based on functional data analysis to identify patterns of malaria incidence to guide effective targeting of malaria control in a seasonal transmission area. Using functional data method, a smooth function (functional data or curve) was fitted from the time series of observed malaria incidence for each of 575 villages in west-central Senegal from 2008 to 2012. These 575 smooth functions were classified using hierarchical clustering (Ward’s method), and several different dissimilarity measures. Validity indices were used to determine the number of distinct temporal patterns of malaria incidence. Epidemiological indicators characterizing the resulting malaria incidence patterns were determined from the velocity and acceleration of their incidences over time. We identified three distinct patterns of malaria incidence: high-, intermediate-, and low-incidence patterns in respectively 2% (12/575), 17% (97/575), and 81% (466/575) of villages. Epidemiological indicators characterizing the fluctuations in malaria incidence showed that seasonal outbreaks started later, and ended earlier, in the low-incidence pattern. Functional data analysis can be used to identify patterns of malaria incidence, by considering their temporal dynamics. Epidemiological indicators derived from their velocities and accelerations, may guide to target control measures according to patterns.
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Affiliation(s)
- Sokhna Dieng
- Sciences Economiques et Sociales de la Santé et Traitement de de l'Information Médicale (SESSTIM), Institut de Recherche pour le Développement (IRD), Institut National de la Santé et de la Recherche médicale (INSERM), Aix Marseille Université, 13005 Marseille, France
| | - Pierre Michel
- Aix Marseille School of Economics (AMSE), Centrale Marseille, Ecoles des Hautes Etudes en Sciences Sociales (EHESS), Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université, 13001 Marseille, France
| | - Abdoulaye Guindo
- Sciences Economiques et Sociales de la Santé et Traitement de de l'Information Médicale (SESSTIM), Institut de Recherche pour le Développement (IRD), Institut National de la Santé et de la Recherche médicale (INSERM), Aix Marseille Université, 13005 Marseille, France
- Mère et Enfant face aux Infections Tropicales (MERIT), Institut de Recherche pour le Développement (IRD), Université Paris 5, 75006 Paris, France
| | - Kankoe Sallah
- Sciences Economiques et Sociales de la Santé et Traitement de de l'Information Médicale (SESSTIM), Institut de Recherche pour le Développement (IRD), Institut National de la Santé et de la Recherche médicale (INSERM), Aix Marseille Université, 13005 Marseille, France
- Unité de Recherche Clinique Paris Nord Val de Seine (PNVS), Hôpital Bichat, Assistance Publique-Hôpitaux de Paris (AP-HP), 75018 Paris, France
| | - El-Hadj Ba
- Unité Mixte de Recherche (UMR), Vecteurs-Infections Tropicales et Méditerranéennes (VITROME), Campus International Institut de Recherche pour le Développement-Université Cheikh Anta Diop (IRD-UCAD) de l'IRD, Dakar CP 18524, Senegal
| | - Badara Cissé
- Institut de Recherche en Santé, de Surveillance Épidémiologique et de Formation (IRESSEF) Diamniadio, Dakar BP 7325, Senegal
| | - Maria Patrizia Carrieri
- Sciences Economiques et Sociales de la Santé et Traitement de de l'Information Médicale (SESSTIM), Institut de Recherche pour le Développement (IRD), Institut National de la Santé et de la Recherche médicale (INSERM), Aix Marseille Université, 13005 Marseille, France
| | - Cheikh Sokhna
- Unité Mixte de Recherche (UMR), Vecteurs-Infections Tropicales et Méditerranéennes (VITROME), Campus International Institut de Recherche pour le Développement-Université Cheikh Anta Diop (IRD-UCAD) de l'IRD, Dakar CP 18524, Senegal
| | - Paul Milligan
- London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Jean Gaudart
- Aix Marseille Université, Assistance Publique-Hôpitaux de Marseille(APHM), INSERM, IRD, SESSTIM, Hop Timone, BioSTIC, Biostatistic and ICT, 13005 Marseille, France
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21
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Abstract
Intensified treatment and control efforts since the early 2000s have dramatically reduced the burden of Plasmodium falciparum malaria. However, drug resistance threatens to derail this progress. In this review, we present four antimalarial resistance case studies that differ in timeline, technical approaches, mechanisms of action, and categories of resistance: chloroquine, sulfadoxine-pyrimethamine, artemisinin, and piperaquine. Lessons learned from prior losses of treatment efficacy, drug combinations, and control strategies will help advance mechanistic research into how P. falciparum parasites acquire resistance to current first-line artemisinin-based combination therapies. Understanding resistance in the clinic and laboratory is essential to prolong the effectiveness of current antimalarial drugs and to optimize the pipeline of future medicines.
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Affiliation(s)
- Leila S Ross
- Department of Microbiology & Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - David A Fidock
- Department of Microbiology & Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA; Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA.
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22
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Ndiaye JLA, Ndiaye Y, Ba MS, Faye B, Ndiaye M, Seck A, Tine R, Thior PM, Atwal S, Beshir K, Sutherland C, Gaye O, Milligan P. Seasonal malaria chemoprevention combined with community case management of malaria in children under 10 years of age, over 5 months, in south-east Senegal: A cluster-randomised trial. PLoS Med 2019; 16:e1002762. [PMID: 30865632 PMCID: PMC6415816 DOI: 10.1371/journal.pmed.1002762] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 02/12/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Seasonal malaria chemoprevention (SMC) is recommended in the Sahel region of Africa for children under 5 years of age, for up to 4 months of the year. It may be appropriate to include older children, and to provide protection for more than 4 months. We evaluated the effectiveness of SMC using sulfadoxine-pyrimethamine plus amodiaquine given over 5 months to children under 10 years of age in Saraya district in south-east Senegal in 2011. METHODS AND FINDINGS Twenty-four villages, including 2,301 children aged 3-59 months and 2,245 aged 5-9 years, were randomised to receive SMC with community case management (CCM) (SMC villages) or CCM alone (control villages). In all villages, community health workers (CHWs) were trained to treat malaria cases with artemisinin combination therapy after testing with a rapid diagnostic test (RDT). In SMC villages, CHWs administered SMC to children aged 3 months to 9 years once a month for 5 months. The study was conducted from 27 July to 31 December 2011. The primary outcome was malaria (fever or history of fever with a positive RDT). The prevalence of anaemia and parasitaemia was measured in a survey at the end of the transmission season. Molecular markers associated with resistance to SMC drugs were analysed in samples from incident malaria cases and from children with parasitaemia in the survey. SMC was well tolerated with no serious adverse reactions. There were 1,472 RDT-confirmed malaria cases in the control villages and 270 in the SMC villages. Among children under 5 years of age, the rate difference was 110.8/1,000/month (95% CI 64.7, 156.8; p < 0.001) and among children 5-9 years of age, 101.3/1,000/month (95% CI 66.7, 136.0; p < 0.001). The mean haemoglobin concentration at the end of the transmission season was higher in SMC than control villages, by 6.5 g/l (95% CI 2.0, 11; p = 0.007) among children under 5 years of age, and by 5.2 g/l (95% CI 0.4, 9.9; p = 0.035) among children 5-9 years of age. The prevalence of parasitaemia was 18% in children under 5 years of age and 25% in children 5-9 years of age in the control villages, and 5.7% and 5.8%, respectively, in these 2 age groups in the SMC villages, with prevalence differences of 12.5% (95% CI 6.8%, 18.2%; p < 0.001) in children under 5 years of age and 19.3% (95% CI 8.3%, 30.2%; p < 0.001) in children 5-9 years of age. The pfdhps-540E mutation associated with clinical resistance to sulfadoxine-pyrimethamine was found in 0.8% of samples from malaria cases but not in the final survey. Twelve children died in the control group and 14 in the SMC group, a rate difference of 0.096/1,000 child-months (95% CI 0.99, 1.18; p = 0.895). Limitations of this study include that we were not able to obtain blood smears for microscopy for all suspected malaria cases, such that we had to rely on RDTs for confirmation, which may have included false positives. CONCLUSIONS In this study SMC for children under 10 years of age given over 5 months was feasible, well tolerated, and effective in preventing malaria episodes, and reduced the prevalence of parasitaemia and anaemia. SMC with CCM achieved high coverage and ensured children with malaria were promptly treated with artemether-lumefantrine. TRIAL REGISTRATION www.clinicaltrials.gov NCT01449045.
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Affiliation(s)
| | | | | | | | | | | | - Roger Tine
- University Cheikh Anta Diop, Dakar, Senegal
| | | | - Sharanjeet Atwal
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Khalid Beshir
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Colin Sutherland
- London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Oumar Gaye
- University Cheikh Anta Diop, Dakar, Senegal
| | - Paul Milligan
- London School of Hygiene & Tropical Medicine, London, United Kingdom
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23
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Pitt C, Ndiaye M, Conteh L, Sy O, Hadj Ba E, Cissé B, Gomis JF, Gaye O, Ndiaye JL, Milligan PJ. Large-scale delivery of seasonal malaria chemoprevention to children under 10 in Senegal: an economic analysis. Health Policy Plan 2017; 32:1256-1266. [PMID: 28981665 PMCID: PMC5886061 DOI: 10.1093/heapol/czx084] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2017] [Indexed: 11/14/2022] Open
Abstract
Seasonal Malaria Chemoprevention (SMC) is recommended for children under 5 in the Sahel and sub-Sahel. The burden in older children may justify extending the age range, as has been done effectively in Senegal. We examine costs of door-to-door SMC delivery to children up to 10 years by community health workers (CHWs). We analysed incremental financial and economic costs at district level and below from a health service perspective. We examined project accounts and prospectively collected data from 405 CHWs, 46 health posts, and 4 district headquarters by introducing questionnaires in advance and completing them after each monthly implementation round. Affordability was explored by comparing financial costs of SMC to relevant existing health expenditure levels. Costs were disaggregated by administration month and by health service level. We used linear regression models to identify factors associated with cost variation between health posts. The financial cost to administer SMC to 180 000 children over one malaria season, reaching ∼93% of children with all three intended courses of SMC was $234 549 (constant 2010 USD) or $0.50 per monthly course administered. Excluding research-participation incentives, the financial cost was $0.32 per resident (all ages) in the catchment area, which is 1.2% of Senegal's general government expenditure on health per capita. Economic costs were 18.7% higher than financial costs at $278 922 or $0.59 per course administered and varied widely between health posts, from $0.38 to $2.74 per course administered. Substantial economies of scale across health posts were found, with the smallest health posts incurring highest average costs per monthly course administered. SMC for children up to 10 is likely to be affordable, particularly where it averts substantial curative care costs. Estimates of likely costs and cost-effectiveness of SMC in other contexts must account for variation in average costs across delivery months and health posts.
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Affiliation(s)
- Catherine Pitt
- Department of Global Health & Development, London School of Hygiene & Tropical Medicine, London, UK
| | - Mouhamed Ndiaye
- Department of Parasitology, Université Cheikh Anta Diop, Dakar, Senegal
| | - Lesong Conteh
- Health Economics Group, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, UK
| | - Ousmane Sy
- Department of Parasitology, Université Cheikh Anta Diop, Dakar, Senegal
| | - El Hadj Ba
- Institut de Recherche pour le Développement, Dakar, Senegal and
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | - Badara Cissé
- Department of Parasitology, Université Cheikh Anta Diop, Dakar, Senegal
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | - Jules F Gomis
- Institut de Recherche pour le Développement, Dakar, Senegal and
| | - Oumar Gaye
- Department of Parasitology, Université Cheikh Anta Diop, Dakar, Senegal
| | - Jean-Louis Ndiaye
- Department of Parasitology, Université Cheikh Anta Diop, Dakar, Senegal
| | - Paul J Milligan
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
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