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1.
Malar J ; 22(1): 347, 2023 Nov 11.
Artículo en Inglés | MEDLINE | ID: mdl-37951942

RESUMEN

BACKGROUND: Malaria affects millions of Cameroonian children under 5 years of age living in the North and Far North regions. These regions bear the greatest burden, particularly for children under 5 years of age. To reduce the burden of disease in these regions, Cameroon adopted the Seasonal Malaria Chemoprevention (SMC) in 2016 and has implemented it each year since its adoption. However, no previous studies have systematically assessed the effects of this intervention in Cameroon. It is important to understand its effect and whether its implementation could be improved. This study aimed to assess the effect of SMC in Cameroon during the period 2016-2021 on malaria morbidity in children under 5 years of age using routine data. METHODS: Data on malaria cases were extracted from the Cameroon Health Monitoring Information System (HMIS) from January 1, 2011, to December 31, 2021. Health facilities report these data monthly on a single platform, the District Health Information System version 2 (DHIS2). Thus, a controlled interrupted time-series model in a Bayesian framework was used to evaluate the effects of the SMC on malaria morbidity. RESULTS: SMC implementation was associated with a reduction in the incidence of uncomplicated malaria cases during the high-transmission periods from 2016 to 2021. Regarding the incidence of severe malaria during the high-transmission period, a reduction was found over the period 2016-2019. The highest reduction was registered during the second year of implementation in 2017:15% (95% Credible Interval, 10-19) of uncomplicated malaria cases and 51% (47-54) of confirmed severe malaria cases. CONCLUSION: The addition of SMC to the malaria intervention package in Cameroon decreased the incidence of uncomplicated and severe malaria among children under 5 years of age. Based on these findings, this study supports the wide implementation of SMC to reduce the malaria burden in Cameroon as well as the use of routine malaria data to monitor the efficiency of the strategy in a timely manner.


Asunto(s)
Antimaláricos , Malaria , Humanos , Niño , Lactante , Preescolar , Antimaláricos/uso terapéutico , Camerún/epidemiología , Estaciones del Año , Teorema de Bayes , Malaria/epidemiología , Malaria/prevención & control , Malaria/tratamiento farmacológico , Quimioprevención
2.
Malar J ; 21(1): 143, 2022 May 06.
Artículo en Inglés | MEDLINE | ID: mdl-35524310

RESUMEN

BACKGROUND: In 2014, the Burkina Faso government launched the Seasonal Malaria Chemoprevention (SMC) programme. Expected benefit was a 75% reduction of all malaria episodes and a 75% drop of severe malaria episodes. This study assessed SMC efficiency on malaria morbidity in the country after 2 years of implementation. METHODS: Quasi-experimental design comparing changes in outcomes during the high transmission period (August-November) between SMC and non-SMC health districts before (2013-2014) and after intervention (two rounds in 2015 and 2016). Health indicators (number of uncomplicated malaria cases (UM) and severe malaria cases (SM)) from 19 health districts (8 in intervention and 11 in comparison group) were extracted from the District Health Information System (DHIS2)-based platform including health facilities data. Effect on incidence was assessed by fitting difference-in difference mixed-effects negative binomial regression model at a log scale. RESULTS: The two rounds of SMC were associated with a reduction of UM incidence (ratio of incidence rate ratio (IRR) 69% (95% CI 55-86%); p = 0.001) and SM incidence (ratio of IRR = 73% (55-95%), p = 0.018) among under five children. CONCLUSION: The two rounds of SMC had a significant effect on the reduction of malaria cases in under five children. This additional evidence on the effectiveness of SMC, using routine data, support the need to sustain its implementation and consider expansion to eligible areas not yet covered.


Asunto(s)
Antimaláricos , Malaria , Antimaláricos/uso terapéutico , Burkina Faso/epidemiología , Quimioprevención , Niño , Preescolar , Humanos , Lactante , Malaria/tratamiento farmacológico , Malaria/epidemiología , Malaria/prevención & control , Estaciones del Año
3.
Malar J ; 20(1): 241, 2021 May 29.
Artículo en Inglés | MEDLINE | ID: mdl-34051817

RESUMEN

BACKGROUND: To reduce the malaria burden and improve the socioeconomic status of its citizens, the Democratic Republic of Congo scaled up key malaria control interventions, especially insecticide-treated nets (ITNs), between 2005 and 2014. Since then, the effects of these interventions on malaria mortality and morbidity have not been assessed. This study aimed to measure the impact of the National Malaria Control Programme's efforts and to inform future control strategies. METHODS: The authors used data from the Demographic and Health Surveys 2007 and 2013-2014 to assess trends in all-cause childhood mortality (ACCM) against trends in coverage of malaria interventions at national and subnational levels. The authors used the plausibility argument to assess the impact of the malaria control interventions and used Kaplan-Meier survival probability and Cox proportional hazard models to examine the effect of ITN ownership on child survival. Contextual factor trends affecting child survival were also considered. RESULTS: Countrywide, household ownership of at least one ITN increased, from 9% in 2007 to 70% in 2013-2014. All provinces experienced similar increases, with some greater than the national level. ITN use increased between 2007 and 2013-2014 among children under five (6% to 55%). Severe anaemia (haemoglobin concentration < 8 g/dl) prevalence among children aged 6-59 months significantly decreased, from 11% (95% confidence interval [CI] 9-13%) in 2007 to 6% (95% CI 5-7%) in 2013-2014. During the same period, ACCM declined, from 148 (95% CI 132-163) to 104 (95% CI 97-112) deaths per 1000 live births. The decline in ACCM was greater among children aged 6-23 months (relative reduction of 36%), compared to children aged 24-59 months (relative reduction of 12%). Cox regression indicated that household ownership of at least one ITN reduced the risk of mortality by 24% among children under five (risk ratio = 0.76, 95% CI 0.64-0.90). Contextual factor analysis revealed marginal improvements in socioeconomic indicators and other health interventions. CONCLUSIONS: Given the patterns of the coverage of malaria control interventions, patterns in ACCM by province, and marginal improvements in contextual factors, the authors conclude that the malaria control interventions have plausibly contributed to the decrease in ACCM in the Democratic Republic of Congo from 2005 to 2014.


Asunto(s)
Mortalidad del Niño/tendencias , Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Malaria/prevención & control , Morbilidad/tendencias , Control de Mosquitos/estadística & datos numéricos , Preescolar , República Democrática del Congo/epidemiología , Femenino , Humanos , Lactante , Recién Nacido , Malaria/mortalidad , Masculino , Prevalencia
4.
Malar J ; 19(1): 75, 2020 Feb 18.
Artículo en Inglés | MEDLINE | ID: mdl-32070357

RESUMEN

BACKGROUND: Many countries have made substantial progress in scaling-up and sustaining malaria intervention coverage, leading to more focalized and heterogeneous transmission in many settings. Evaluation provides valuable information for programmes to understand if interventions have been implemented as planned and with quality, if the programme had the intended impact on malaria burden, and to guide programmatic decision-making. Low-, moderate-, and heterogeneous-transmission settings present unique evaluation challenges because of dynamic and targeted intervention strategies. This paper provides illustration of evaluation approaches and methodologies for these transmission settings, and suggests how to answer evaluation questions specific to the local context. METHODS: The Roll Back Malaria Monitoring and Evaluation Reference Group formed a task force in October 2017 to lead development of this framework. The task force includes representatives from National Malaria Programmes, funding agencies, and malaria research and implementing partners. The framework builds on existing guidance for process and outcome evaluations and impact evaluations specifically in high transmission settings. RESULTS: The theory of change describes how evaluation questions asked by national malaria programmes in different contexts influence evaluation design. The transmission setting, existing stratification, and data quality and availability are also key considerations. The framework is intended for adaption by countries to their local context, and use for evaluation at sub-national level. Confirmed malaria incidence is recommended as the primary impact indicator due to its sensitivity to detect changes in low-transmission settings. It is expected that process evaluations provide sufficient evidence for programme monitoring and improvement, while impact evaluations are needed following adoption of new mixes of interventions, operational strategies, tools or policies, particularly in contexts of changing malaria epidemiology. Impact evaluations in low-, moderate-, or heterogeneous-transmission settings will likely use plausibility designs, and methods highlighted by the framework include interrupted time series, district-level dose-response analyses, and constructed control methods. Triangulating multiple data sources and analyses is important to strengthen the plausibility argument. CONCLUSIONS: This framework provides a structure to assist national malaria programmes and partners to design evaluations in low-, moderate- or heterogeneous-transmission settings. Emphasizing a continuous cycle along the causal pathway linking process evaluation to impact evaluation and then programmatic decision-making, the framework provides practical guidance in evaluation design, analysis, and interpretation to ensure that the evaluation meets national malaria programme priority questions and guides decision-making at national and sub-national levels.


Asunto(s)
Control de Enfermedades Transmisibles/métodos , Malaria/prevención & control , Programas Nacionales de Salud , Evaluación de Programas y Proyectos de Salud , Humanos , Malaria/transmisión
5.
Malar J ; 18(1): 253, 2019 Jul 29.
Artículo en Inglés | MEDLINE | ID: mdl-31358012

RESUMEN

BACKGROUND: New national malaria strategic plans (NMSPs) should build upon the achievements and challenges identified during the implementation of previous plans, but there is limited research on the transition process between NMSPs. This study aims to fill this gap through an assessment of NMSPs across sub-Saharan Africa. METHODS: The study reviewed the two most recent NMSPs for selected sub-Saharan African countries. Targets for six core malaria indicators were extracted from each NMSP and compared to the coverage achieved according to corresponding population-based surveys completed near the end of the NMSP term. Implementation challenges and proposed solutions identified through the NMSP analysis were documented. The current NMSP was reviewed to determine whether proposed solutions had been integrated into the strategy. RESULTS: Twenty-two countries in sub-Saharan Africa were included in the assessment. Of the 135 verified targets, only 4 were achieved. No country reached more than one of the six targets assessed in each NMSP. Despite this low success rate, only four of the 22 countries lowered a subsequent target, with most setting the next target at an equal or greater level. Most NMSPs identified solutions to address implementation challenges faced, but the solutions were not always fully incorporated in the new strategy. CONCLUSIONS: The results show a disconnect between NMSPs. Most targets were set according to global goals rather than the individual country's previous achievements and limitations. This indicates a need to revise the NMSP development process to guide programmes in defining targets based on their country context and incorporate strategies to address challenges identified in the previous NMSP. This will allow countries to set and meet achievable targets as they work toward global goals.


Asunto(s)
Erradicación de la Enfermedad/métodos , Política de Salud/legislación & jurisprudencia , Malaria/prevención & control , África del Sur del Sahara , Humanos
6.
Malar J ; 18(1): 121, 2019 Apr 06.
Artículo en Inglés | MEDLINE | ID: mdl-30954073

RESUMEN

BACKGROUND: To reduce the malaria burden in Nigeria, the National Malaria Strategic Plan (NMSP) 2014‒2020 calls for the scale-up of prevention and treatment interventions, including social and behaviour change (SBC). SBC interventions can increase awareness and improve the demand for and uptake of malaria interventions. However, there is limited evidence supporting the implementation of SBC interventions to improve key malaria behaviours, such as insecticide-treated bed net (ITN) use, among children in Nigeria. METHODS: Using data from 2015 Nigeria Malaria Indicator Survey, this study used multiple logistic regression to assess the relationship between caregiver exposure to malaria messages and ITN use among children under five. RESULTS: Caregiver exposure to ITN-related messages was significantly associated with ITN use among children under five (odds ratio [OR] = 1.63, p < 0.001). CONCLUSIONS: The results suggest that caregiver exposure to topic-specific SBC messages improves the use of ITNs among children. Given these results, Nigeria should strive to scale up SBC interventions to help increase ITN use among children in line with the objectives of the NMSP. Further evidence is needed to determine which SBC interventions are the most effective and scalable in Nigeria.


Asunto(s)
Cuidadores/psicología , Conocimientos, Actitudes y Práctica en Salud , Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Control de Mosquitos/métodos , Conducta Social , Adolescente , Adulto , Cuidadores/estadística & datos numéricos , Preescolar , Estudios Transversales , Femenino , Humanos , Lactante , Modelos Logísticos , Malaria/prevención & control , Masculino , Persona de Mediana Edad , Nigeria , Oportunidad Relativa , Adulto Joven
7.
Malar J ; 18(1): 185, 2019 May 28.
Artículo en Inglés | MEDLINE | ID: mdl-31138216

RESUMEN

BACKGROUND: To reduce the malaria burden in Nigeria, the country is scaling up prevention and treatment interventions, especially household ownership and use of insecticide-treated nets (ITNs). Nevertheless, large gaps remain to achieve the goals of the National Malaria Strategic Plan 2014-2020 of universal access to ITNs and their increased use. To inform the targeting of intervention strategies and to maximize impact, the authors conducted a sub-national profiling of household ITN ownership and use in the general population to identify key predictors of ITN ownership and use, and the sub-groups that are at higher risk of low ITN coverage and use. METHODS: The authors conducted a secondary analysis of data from the 2015 Nigeria Malaria Indicator Survey. Using the Chi square automatic interaction detector (CHAID) and multiple logistic regression analysis, the authors examined the key predictors of ITN ownership and use in the general population throughout Nigeria. RESULTS: The CHAID models identified region of the country as the best predictor of household ownership of at least one ITN and its use in the general population, with higher ownership and use observed in the northern regions. The odds of a household owning an ITN were five times greater in the North West region compared with the North Central region (odds ratio [OR] = 5.47, 95% confidence interval [CI] 4.46-6.72, p < 0.001). The odds of ITN use were two times greater for those living in the North West region compared with the North Central region (OR = 2.04, 95% CI 1.73-2.41, p < 0.001). Other significant predictors were household size, head of household education level, household wealth quintile, and place of residence. The CHAID gain index results identified households in the South West, North Central and South Central regions with low ITN ownership, and the general population in the South South, South East and North Central regions with low ITN use. CONCLUSIONS: This study reveals regional differences in ITN ownership and use in Nigeria. Therefore, the findings from this analysis provide evidence that could inform the NMEP to better target future campaign and routine distribution of ITNs, to achieve universal access and increased use by 2020 in Nigeria.


Asunto(s)
Composición Familiar , Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Malaria/prevención & control , Propiedad , Estudios Transversales , Geografía , Humanos , Control de Mosquitos/métodos , Nigeria , Oportunidad Relativa , Encuestas y Cuestionarios
8.
Malar J ; 17(1): 355, 2018 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-30305127

RESUMEN

BACKGROUND/METHODS: Insecticide-treated nets (ITNs) are the primary tool for malaria vector control in sub-Saharan Africa, and have been responsible for an estimated two-thirds of the reduction in the global burden of malaria in recent years. While the ultimate goal is high levels of ITN use to confer protection against infected mosquitoes, it is widely accepted that ITN use must be understood in the context of ITN availability. However, despite nearly a decade of universal coverage campaigns, no country has achieved a measured level of 80% of households owning 1 ITN for 2 people in a national survey. Eighty-six public datasets from 33 countries in sub-Saharan Africa (2005-2017) were used to explore the causes of failure to achieve universal coverage at the household level, understand the relationships between the various ITN indicators, and further define their respective programmatic utility. RESULTS: The proportion of households owning 1 ITN for 2 people did not exceed 60% at the national level in any survey, except in Uganda's 2014 Malaria Indicator Survey (MIS). At 80% population ITN access, the expected proportion of households with 1 ITN for 2 people is only 60% (p = 0.003 R2 = 0.92), because individuals in households with some but not enough ITNs are captured as having access, but the household does not qualify as having 1 ITN for 2 people. Among households with 7-9 people, mean population ITN access was 41.0% (95% CI 36.5-45.6), whereas only 6.2% (95% CI 4.0-8.3) of these same households owned at least 1 ITN for 2 people. On average, 60% of the individual protection measured by the population access indicator is obscured when focus is put on the household "universal coverage" indicator. The practice of limiting households to a maximum number of ITNs in mass campaigns severely restricts the ability of large households to obtain enough ITNs for their entire family. CONCLUSIONS: The two household-level indicators-one representing minimal coverage, the other only 'universal' coverage-provide an incomplete and potentially misleading picture of personal protection and the success of an ITN distribution programme. Under current ITN distribution strategies, the global malaria community cannot expect countries to reach 80% of households owning 1 ITN for 2 people at a national level. When programmes assess the success of ITN distribution activities, population access to ITNs should be considered as the better indicator of "universal coverage," because it is based on people as the unit of analysis.


Asunto(s)
Control de Enfermedades Transmisibles/estadística & datos numéricos , Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Malaria/prevención & control , Control de Mosquitos/estadística & datos numéricos , África del Sur del Sahara , Animales , Control de Enfermedades Transmisibles/métodos , Composición Familiar , Humanos , Control de Mosquitos/métodos , Propiedad
9.
BMC Health Serv Res ; 18(1): 169, 2018 03 09.
Artículo en Inglés | MEDLINE | ID: mdl-29523139

RESUMEN

BACKGROUND: Since 2003 Tanzania has upgraded its approximately 7000 drug stores to Accredited Drug Dispensing Outlets (ADDOs), involving dispenser training, introduction of record keeping and enhanced regulation. Prior to accreditation, drug stores could officially stock over-the-counter medicines only, though many stocked prescription-only antimalarials. ADDOs are permitted to stock 49 prescription-only medicines, including artemisinin combination therapies and one form of quinine injectable. Oral artemisinin monotherapies and other injectables were not permitted at any time. By late 2011 conversion was complete in 14 of 21 regions. We explored variation in malaria-related knowledge and practices of drug retailers in ADDO and non-ADDO regions. METHODS: Data were collected as part of the Independent Evaluation of the Affordable Medicines Facility - malaria (AMFm), involving a nationally representative survey of antimalarial retailers in October-December 2011. We randomly selected 49 wards and interviewed all drug stores stocking antimalarials. We compare ADDO and non-ADDO regions, excluding the largest city, Dar es Salaam, due to the unique characteristics of its market. RESULTS: Interviews were conducted in 133 drug stores in ADDO regions and 119 in non-ADDO regions. Staff qualifications were very similar in both areas. There was no significant difference in the availability of the first line antimalarial (68.9% in ADDO regions and 65.2% in non-ADDO regions); both areas had over 98% availability of non-artemisinin therapies and below 3.0% of artemisinin monotherapies. Staff in ADDO regions had better knowledge of the first line antimalarial than non-ADDO regions (99.5% and 91.5%, p = 0.001). There was weak evidence of a lower price and higher market share of the first line antimalarial in ADDO regions. Drug stores in ADDO regions were more likely to stock ADDO-certified injectables than those in non-ADDO regions (23.0% and 3.9%, p = 0.005). CONCLUSIONS: ADDO conversion is frequently cited as a model for improving retail sector drug provision. Drug stores in ADDO regions performed better on some indicators, possibly indicating some small benefits from ADDO conversion, but also weaknesses in ADDO regulation and high staff turnover. More evidence is needed on the value-added and value for money of the ADDO roll out to inform retail policy in Tanzania and elsewhere.


Asunto(s)
Acreditación/estadística & datos numéricos , Conocimientos, Actitudes y Práctica en Salud , Malaria , Farmacias/estadística & datos numéricos , Antimaláricos/economía , Antimaláricos/uso terapéutico , Artemisininas/economía , Artemisininas/uso terapéutico , Comercio/estadística & datos numéricos , Investigación sobre Servicios de Salud , Humanos , Malaria/tratamiento farmacológico , Sector Privado/estadística & datos numéricos , Investigación Cualitativa , Tanzanía
10.
Bull World Health Organ ; 95(5): 322-332, 2017 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-28479633

RESUMEN

OBJECTIVE: To examine the change in equity of insecticide-treated net (ITN) ownership among 19 malaria-endemic countries in sub-Saharan Africa before and after the launch of the Cover The Bed Net Gap initiative. METHODS: To assess change in equity in ownership of at least one ITN by households from different wealth quintiles, we used data from Demographic and Health Surveys and Malaria Indicator Surveys. We assigned surveys conducted before the launch (2003-2008) as baseline surveys and surveys conducted between 2009-2014 as endpoint surveys. We did country-level and pooled multicountry analyses. Pooled analyses based on malaria transmission risk, were done by dividing geographical zones into either low- and intermediate-risk or high-risk. To assess changes in equity, we calculated the Lorenz concentration curve and concentration index (C-index). FINDINGS: Out of the 19 countries we assessed, 13 countries showed improved equity between baseline and endpoint surveys and two countries showed no changes. Four countries displayed worsened equity, two favouring the poorer households and two favouring the richer. The multicountry pooled analysis showed an improvement in equity (baseline survey C-index: 0.11; 95% confidence interval, CI: 0.10 to 0.11; and endpoint survey C-index: 0.00; 95% CI: -0.01 to 0.00). Similar trends were seen in both low- and intermediate-risk and high-risk zones. CONCLUSION: The mass ITN distribution campaigns to increase coverage, linked to the launch of the Cover The Bed Net Gap initiative, have led to improvement in coverage of ITN ownership across sub-Saharan Africa with significant reduction in inequity among wealth quintiles.


Asunto(s)
Equidad en Salud , Mosquiteros Tratados con Insecticida/provisión & distribución , Malaria/prevención & control , Control de Mosquitos/métodos , Propiedad/estadística & datos numéricos , África del Sur del Sahara/epidemiología , Enfermedades Endémicas , Humanos , Renta/estadística & datos numéricos , Malaria/epidemiología , Medición de Riesgo , Factores Socioeconómicos
11.
Malar J ; 16(1): 302, 2017 07 28.
Artículo en Inglés | MEDLINE | ID: mdl-28754113

RESUMEN

BACKGROUND: Use of insecticide-treated bed nets (ITNs) is the cornerstone of malaria prevention. In 2010 and 2013, the Burkina Faso Government launched mass distribution campaigns of ITNs to increase coverage of ownership and use in the country. This study assessed the progress towards universal bed net coverage in Burkina Faso. METHODS: The authors used data from the Burkina Faso 2003 and 2010 Demographic and Health Surveys (DHS), the 2006 Multiple Indicator Cluster Surveys (MICS) and the 2014 Malaria Indicator Survey (MIS). For each survey, the authors computed key malaria prevention indicators in line with recommendations from the Survey and Indicator Task Force of the Roll Back Malaria Monitoring and Evaluation Reference Group. The trends over a decade was assessed by calculating percentage point change between 2003 and 2014. RESULTS: At national level, the proportion of households owning at least one ITN increased substantially from 5.6, 95% CI (4.7, 6.5%) in 2003 to 89.9% (88.5, 91.2%) in 2014, with low heterogeneity between regions. The proportion of households owning at least one ITN per two people increased significantly from 1.8% (1.4, 2.3%) in 2003 to 49.2% (47.3, 51.0%) in 2014. ITN use in the general population increased from 2.0% (1.6, 2.3%) in 2003, to 67.0% (65.3, 68.7%) in 2014. A similar trend was observed among children under the age of  five years, increasing from 1.9% (1.5, 2.4%) in 2003 to 75.2% (73.2, 77.3%) in 2014, and among pregnant women, increasing from 3.0% (1.9, 4.2%) in 2003 to 77.1% (72.9, 81.3%) in 2014. The intra-household ownership gap was 67.0% (61.5, 72.4%) in 2003, but decreased significantly to 45.3% (43.6, 47.1%) in 2014. The behavioural gap, which was relatively low in 2013 with only 20.0% of people who had access to an ITN but were not using it, further decreased to 5.9% in 2014. CONCLUSION: Burkina Faso made considerable progress in coverage of ITN ownership, access and use between 2003 and 2014, as a result of the two free mass distribution campaigns in 2010 and 2013. However, ITN coverage remains below the national targets of 100% for ownership and 80% for use. The results of 90% of ownership and 67% of use confirm that free mass distribution campaigns of ITNs are effective; however, there is room for improvement to reach and maintain optimal coverage of ITN ownership and use.


Asunto(s)
Mosquiteros Tratados con Insecticida/estadística & datos numéricos , Malaria/prevención & control , Control de Mosquitos/estadística & datos numéricos , Propiedad/estadística & datos numéricos , Adolescente , Adulto , Burkina Faso , Niño , Preescolar , Composición Familiar , Femenino , Humanos , Lactante , Recién Nacido , Mosquiteros Tratados con Insecticida/tendencias , Masculino , Persona de Mediana Edad , Propiedad/tendencias , Embarazo , Adulto Joven
12.
Malar J ; 16(1): 421, 2017 10 23.
Artículo en Inglés | MEDLINE | ID: mdl-29058621

RESUMEN

BACKGROUND: Lack of valid and reliable data on malaria deaths continues to be a problem that plagues the global health community. To address this gap, the verbal autopsy (VA) method was developed to ascertain cause of death at the population level. Despite the adoption and wide use of VA, there are many recognized limitations of VA tools and methods, especially for measuring malaria mortality. This study synthesizes the strengths and limitations of existing VA tools and methods for measuring malaria mortality (MM) in low- and middle-income countries through a systematic literature review. METHODS: The authors searched PubMed, Cochrane Library, Popline, WHOLIS, Google Scholar, and INDEPTH Network Health and Demographic Surveillance System sites' websites from 1 January 1990 to 15 January 2016 for articles and reports on MM measurement through VA. INCLUSION CRITERIA: article presented results from a VA study where malaria was a cause of death; article discussed limitations/challenges related to measurement of MM through VA. Two authors independently searched the databases and websites and conducted a synthesis of articles using a standard matrix. RESULTS: The authors identified 828 publications; 88 were included in the final review. Most publications were VA studies; others were systematic reviews discussing VA tools or methods; editorials or commentaries; and studies using VA data to develop MM estimates. The main limitation were low sensitivity and specificity of VA tools for measuring MM. Other limitations included lack of standardized VA tools and methods, lack of a 'true' gold standard to assess accuracy of VA malaria mortality. CONCLUSIONS: Existing VA tools and methods for measuring MM have limitations. Given the need for data to measure progress toward the World Health Organization's Global Technical Strategy for Malaria 2016-2030 goals, the malaria community should define strategies for improving MM estimates, including exploring whether VA tools and methods could be further improved. Longer term strategies should focus on improving countries' vital registration systems for more robust and timely cause of death data.


Asunto(s)
Autopsia/métodos , Entrevistas como Asunto/métodos , Malaria/mortalidad , Autopsia/instrumentación , Humanos , Sensibilidad y Especificidad
13.
Trop Med Int Health ; 21(4): 546-55, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26821122

RESUMEN

Within relatively small areas, there exist high spatial variations of mortality between villages. In rural Burkina Faso, with data from 1993 to 1998, clusters of particularly high child mortality were identified in the population of the Nouna Health and Demographic Surveillance System (HDSS), a member of the INDEPTH Network. In this paper, we report child mortality with respect to temporal trends, spatial clustering and disparity in this HDSS from 1993 to 2012. Poisson regression was used to describe village-specific child mortality rates and time trends in mortality. The spatial scan statistic was used to identify villages or village clusters with higher child mortality. Clustering of mortality in the area is still present, but not as strong as before. The disparity of child mortality between villages has decreased. The decrease occurred in the context of an overall halving of child mortality in the rural area of Nouna HDSS between 1993 and 2012. Extrapolated to the Millennium Development Goals target period 1990-2015, this yields an estimated reduction of 54%, which is not too far off the aim of a two-thirds reduction.


Asunto(s)
Mortalidad del Niño/tendencias , Disparidades en el Estado de Salud , Mortalidad Infantil/tendencias , Mortalidad Perinatal/tendencias , Características de la Residencia , Población Rural , Burkina Faso/epidemiología , Preescolar , Análisis por Conglomerados , Humanos , Lactante , Muerte del Lactante , Recién Nacido , Muerte Perinatal , Vigilancia de la Población
14.
Malar J ; 15(1): 300, 2016 05 28.
Artículo en Inglés | MEDLINE | ID: mdl-27233243

RESUMEN

BACKGROUND: Malaria control interventions in most endemic countries have intensified in recent years and so there is a need for a robust monitoring and evaluation (M&E) system to measure progress and achievements. Providing programme and M&E officers with the appropriate skills is a way to strengthen malaria's M&E systems and enhance information use for programmes' implementation. This paper describes a recent effort in capacity strengthening for malaria M&E in sub-Saharan Africa (SSA). METHODS: From 2010 to 2014, capacity-strengthening efforts consisted of organizing regional in-person workshops for M&E of malaria programmes for Anglophone and Francophone countries in SSA in collaboration with partners from Ghana and Burkina Faso. Open-sourced online courses were also available in English. A post-workshop assessment was conducted after 5 years to assess the effects of these regional workshops and identify gaps in capacity. RESULTS: The regional workshops trained 181 participants from 28 countries from 2010 to 2014. Trained participants were from ministries of health, national malaria control and elimination programmes, non-governmental organizations, and development partners. The average score (%) for participants' knowledge tests increased from pretest to posttest for Anglophone workshops (2011: 59 vs. 76, 2012: 41 vs. 63, 2013: 51 vs. 73; 2014: 50 vs. 74). Similarly, Francophone workshop posttest scores increased, but were lower than Anglophone due to higher scores at pretest. (2011: 70 vs. 76, 2012: 74 vs. 79, 2013: 61 vs. 68; 2014: 64 vs. 75). Results of the post-workshop assessment revealed that participants retained practical M&E knowledge and skills for malaria programs, but there is a need for a module on malaria surveillance adapted to the pre-elimination context. CONCLUSION: The workshops were successful because of the curriculum content, facilitation quality, and the engagement of partner institutions with training expertise. Results from the post-workshop assessment will guide the curriculum's development and restructuring for the next phase of workshops. Country-specific malaria M&E capacity needs assessments may also inform this process as countries reduce malaria burden.


Asunto(s)
Control de Enfermedades Transmisibles/organización & administración , Transmisión de Enfermedad Infecciosa/prevención & control , Educación Médica/métodos , Investigación sobre Servicios de Salud , Malaria/epidemiología , Malaria/prevención & control , Burkina Faso , Ghana , Humanos
15.
Trop Med Int Health ; 20(6): 744-56, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25728761

RESUMEN

OBJECTIVES: To describe the state of the public and private malaria diagnostics market shortly after WHO updated its guidelines for testing all suspected malaria cases prior to treatment. METHODS: Ten nationally representative cross-sectional cluster surveys were conducted in 2011 among public and private health facilities, community health workers and retail outlets (pharmacies and drug shops) in nine countries (Tanzania mainland and Zanzibar surveyed separately). Eligible outlets had antimalarials in stock on the day of interview or had stocked antimalarials in the past 3 months. RESULTS: Three thousand four hundred and thirty-nine rapid diagnostic test (RDT) products from 39 manufacturers were audited among 12,197 outlets interviewed. Availability was typically highest in public health facilities, although availability in these facilities varied greatly across countries, from 15% in Nigeria to >90% in Madagascar and Cambodia. Private for-profit sector availability was 46% in Cambodia, 20% in Zambia, but low in other countries. Median retail prices for RDTs in the private for-profit sector ranged from $0.00 in Madagascar to $3.13 in Zambia. The reported number of RDTs used in the 7 days before the survey in public health facilities ranged from 3 (Benin) to 50 (Zambia). CONCLUSIONS: Eighteen months after WHO updated its case management guidelines, RDT availability remained poor in the private sector in sub-Saharan Africa. Given the ongoing importance of the private sector as a source of fever treatment, the goal of universal diagnosis will not be achievable under current circumstances. These results constitute national baselines against which progress in scaling-up diagnostic tests can be assessed.


Asunto(s)
Comercio , Pruebas Diagnósticas de Rutina/economía , Malaria/diagnóstico , Sector Privado/economía , Sector Público/economía , África , Asia , Estudios Transversales , Enfermedades Endémicas , Accesibilidad a los Servicios de Salud , Humanos
16.
Malar J ; 14: 329, 2015 Aug 25.
Artículo en Inglés | MEDLINE | ID: mdl-26303581

RESUMEN

BACKGROUND: Scaling up diagnostic testing and treatment is a key strategy to reduce the burden of malaria. Delays in accessing treatment can have fatal consequences; however, few studies have systematically assessed these delays among children under five years of age in malaria-endemic countries of sub-Saharan Africa. This study identifies predictors of prompt treatment with first-line artemisinin combination therapy (ACT) and describes profiles of children who received this recommended treatment. METHODS: This study uses data from the most recent Demographic and Health Survey, Malaria Indicator Survey, or Anaemia and Parasite Prevalence Survey conducted in 13 countries. A Chi square automatic interaction detector (CHAID) model was used to identify factors associated with prompt and effective treatment among children under five years of age. RESULTS: The percentage of children with fever who received any anti-malarial treatment varies from 3.6 % (95 % CI 2.8-4.4 %) in Ethiopia to 64.5 % (95 % CI 62.7-66.2 %) in Uganda. Among those who received prompt treatment with any anti-malarial medicine, the percentage who received ACT ranged from 32.2 % (95 % CI 26.1-38.4 %) in Zambia to nearly 100 % in Tanzania mainland and Zanzibar. The CHAID analysis revealed that country of residence is the best predictor of prompt and effective treatment (p < 0.001). Depending on the country, the second best predictor was maternal education (p = 0.004), place of residence (p = 0.008), or household wealth index (p < 0.001). CONCLUSIONS: This study reveals that country of residence, maternal education, place of residence, and socio-economic status are key predictors of prompt access to malaria treatment. Achieving universal coverage and the elimination agenda will require effective monitoring to detect disparities early and sustained investments in routine data collection and policy formulation.


Asunto(s)
Antimaláricos/uso terapéutico , Quimioterapia Combinada/estadística & datos numéricos , Malaria/tratamiento farmacológico , Tiempo de Tratamiento/estadística & datos numéricos , África del Sur del Sahara/epidemiología , Artemisininas/uso terapéutico , Preescolar , Estudios Transversales , Femenino , Fiebre , Humanos , Lactante , Recién Nacido , Malaria/epidemiología , Masculino
17.
Malar J ; 14: 398, 2015 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-26452625

RESUMEN

BACKGROUND: To assess the availability, price and market share of quality-assured artemisinin-based combination therapy (QAACT) in remote areas (RAs) compared with non-remote areas (nRAs) in Kenya and Ghana at end-line of the Affordable Medicines Facility-malaria (AMFm) intervention. METHODS: Areas were classified by remoteness using a composite index computed from estimated travel times to three levels of service centres. The index was used to five categories of remoteness, which were then grouped into two categories of remote and non-remote areas. The number of public or private outlets with the potential to sell or distribute anti-malarial medicines, screened in nRAs and RAs, respectively, was 501 and 194 in Ghana and 9980 and 2353 in Kenya. The analysis compares RAs with nRAs in terms of availability, price and market share of QAACT in each country. RESULTS: QAACT were similarly available in RAs as nRAs in Ghana and Kenya. In both countries, there was no statistical difference in availability of QAACT with AMFm logo between RAs and nRAs in public health facilities (PHFs), while private-for-profit (PFP) outlets had lower availability in RA than in nRAs (Ghana: 66.0 vs 82.2 %, p < 0.0001; Kenya: 44.9 vs 63.5 %, p = <0.0001. The median price of QAACT with AMFm logo for PFP outlets in RAs (USD1.25 in Ghana and USD0.69 in Kenya) was above the recommended retail price in Ghana (US$0.95) and Kenya (US$0.46), and much higher than in nRAs for both countries. QAACT with AMFm logo represented the majority of QAACT in RAs and nRAs in Kenya and Ghana. In the PFP sector in Ghana, the market share for QAACT with AMFm logo was significantly higher in RAs than in nRAs (75.6 vs 51.4 %, p < 0.0001). In contrast, in similar outlets in Kenya, the market share of QAACT with AMFm logo was significantly lower in RAs than in nRAs (39.4 vs 65.1 %, p < 0.0001). CONCLUSION: The findings indicate the AMFm programme contributed to making QAACT more available in RAs in these two countries. Therefore, the AMFm approach can inform other health interventions aiming at reaching hard-to-reach populations, particularly in the context of universal access to health interventions. However, further examination of the factors accounting for the deep penetration of the AMFm programme into RAs is needed to inform actions to improve the healthcare delivery system, particularly in RAs.


Asunto(s)
Antimaláricos/uso terapéutico , Artemisininas/uso terapéutico , Accesibilidad a los Servicios de Salud , Lactonas/uso terapéutico , Malaria/tratamiento farmacológico , Estudios Transversales , Quimioterapia Combinada/métodos , Geografía , Ghana , Humanos , Kenia
18.
BMC Health Serv Res ; 15: 354, 2015 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-26318623

RESUMEN

BACKGROUND: Nearly 20 years after the adoption by the government of Malawi of the provision of intermittent preventive treatment in pregnancy (IPTp) for malaria, only 55% of pregnant women received at least two doses of sulfadoxine-pyrimethamine (SP) in 2010. Although several reasons for the low coverage have been suggested, few studies have examined the views of health care providers. This study examined the experiences of the nurses and midwives in providing antenatal care (ANC) services. METHODS: This study was conducted in health facilities in Malawi that provide routine ANC services. Providers of ANC in Malawi were selected from in eight health care facilities of Malawi. Selected providers were interviewed using a semi-structured interview guide designed to address a series of themes related to their working conditions and their delivery of IPTp. RESULTS: Nurses displayed detailed knowledge of ANC services and the rationale behind them. Nurses understood that they should provide two doses of IPTp during a pregnancy, but they did not agree on the timing of the doses. Nurses gave SP as directly observed therapy (DOT) at the clinic. Nurses did not give SP pills to women to take home with them because they did not trust that women would take the pills. Women who resisted taking SP explained they do not take drugs if they had not eaten, or they feared side effects, or they were not sick. Reasons for not giving the first or second dose of SP included a delay in the first ANC visit, testing positive for HIV, and presenting with malaria. None of the nurses were able to show any specific written guidelines on when to give SP. The challenges faced by the nurses include being overworked and persuading women to take SP under observation. CONCLUSION: The findings show that the nurses had gained the knowledge and technical skills to provide appropriate ANC services. With regard to IPTp, nurses need guidelines that would be available at the health facility about how and when to give SP. The adoption of the WHO guidelines and their diffusion to health care facilities could help increase the coverage of IPTp2 (at least two doses of sulfadoxine-pyrimethamine) in Malawi.


Asunto(s)
Personal de Salud/psicología , Complicaciones Parasitarias del Embarazo/prevención & control , Atención Prenatal , Adulto , Instituciones de Atención Ambulatoria , Antimaláricos/uso terapéutico , Combinación de Medicamentos , Femenino , Humanos , Entrevistas como Asunto , Malaria/prevención & control , Malaui , Partería , Embarazo , Atención Prenatal/estadística & datos numéricos , Prevención Primaria , Pirimetamina/uso terapéutico , Investigación Cualitativa , Sulfadoxina/uso terapéutico , Confianza
19.
Malar J ; 13: 46, 2014 Feb 04.
Artículo en Inglés | MEDLINE | ID: mdl-24495691

RESUMEN

BACKGROUND: The Affordable Medicines Facility - malaria (AMFm), implemented at national scale in eight African countries or territories, subsidized quality-assured artemisinin combination therapy (ACT) and included communication campaigns to support implementation and promote appropriate anti-malarial use. This paper reports private for-profit provider awareness of key features of the AMFm programme, and changes in provider knowledge of appropriate malaria treatment. METHODS: This study had a non-experimental design based on nationally representative surveys of outlets stocking anti-malarials before (2009/10) and after (2011) the AMFm roll-out. RESULTS: Based on data from over 19,500 outlets, results show that in four of eight settings, where communication campaigns were implemented for 5-9 months, 76%-94% awareness of the AMFm 'green leaf' logo, 57%-74% awareness of the ACT subsidy programme, and 52%-80% awareness of the correct recommended retail price (RRP) of subsidized ACT were recorded. However, in the remaining four settings where communication campaigns were implemented for three months or less, levels were substantially lower. In six of eight settings, increases of at least 10 percentage points in private for-profit providers' knowledge of the correct first-line treatment for uncomplicated malaria were seen; and in three of these the levels of knowledge achieved at endline were over 80%. CONCLUSIONS: The results support the interpretation that, in addition to the availability of subsidized ACT, the intensity of communication campaigns may have contributed to the reported levels of AMFm-related awareness and knowledge among private for-profit providers. Future subsidy programmes for anti-malarials or other treatments should similarly include communication activities.


Asunto(s)
Antimaláricos , Artemisininas , Comunicación , Accesibilidad a los Servicios de Salud/economía , Accesibilidad a los Servicios de Salud/organización & administración , Sector Privado , África del Sur del Sahara , Antimaláricos/economía , Antimaláricos/provisión & distribución , Artemisininas/economía , Artemisininas/provisión & distribución , Combinación de Medicamentos , Conocimientos, Actitudes y Práctica en Salud , Humanos , Malaria Falciparum/tratamiento farmacológico
20.
Am J Trop Med Hyg ; 2024 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-38266305

RESUMEN

In 2021, the U.S. President's Malaria Initiative Measure Malaria project provided support to the National Malaria Program to conduct a data quality assessment. The main goal was to help health centers enhance the quality of their malaria data. The assessment involved reviewing data from outpatient registers, monthly reports, and DHIS2 data. Reporting timeliness, completeness, data element completeness, and availability of source documents were assessed. For timeliness, the assessment measured the proportion of reports that were submitted on time out of the expected total. The results showed that the reporting timeliness was inadequate in Atsinanana (85%) and adequate for Atsimo-Andrefana (95%). Data elements completeness, which refers to reports without missing data, was inadequate in Atsinanana (43%) and Atsimo-Andrefana (68%). The availability of source documents, such as records forms, was assessed and found to be 59% in Atsimo-Andrefana and 48% in Atsinanana. The use of standard reporting forms, which ensures consistency and accuracy in reporting, was reported to be 44% in Atsinanana and 54% in Atsimo-Andrefana. Data discrepancies were identified between outpatient registers, monthly reports, and DHIS2 data. A verification factor (VF) was used to compare the figures in these different sources. The VF was 1.2 in Atsinanana and 1.1 in Atsimo-Andrefana for both monthly reports and DHIS2 data, indicating an overreporting of fever cases tested in 6- to 13-year-olds. Overall, the assessment revealed gaps in data elements completeness, reporting accuracy, and availability of data recording guidelines. The findings suggest that regular data quality assessments should be implemented to guide decision making in Madagascar.

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