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Woldesenbet D, Tegegne Y, Semaw M, Abebe W, Barasa S, Wubetie M, Tamene E, Anteneh M, Yimer A, Wolde D. Malaria Prevalence and Risk Factors in Outpatients at Teda Health Center, Northwest Ethiopia: A Cross-Sectional Study. J Parasitol Res 2024; 2024:8919098. [PMID: 38774539 PMCID: PMC11108681 DOI: 10.1155/2024/8919098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/10/2024] [Accepted: 04/27/2024] [Indexed: 05/24/2024] Open
Abstract
Background Despite extensive efforts and achievements made in prevention and control, malaria is still a public health problem in Ethiopia. Currently, the case number has been climbing, even changing the epidemiology to the previously low-burden reporting locations. Therefore, our study is aimed at assessing malaria prevalence and associated risk factors in outpatients, Northwest Ethiopia. Methods A facility-based cross-sectional study was conducted among 318 malaria-suspected outpatients from October 22 to December 15, 2022, at Teda Health Center, Northwest Ethiopia. Sociodemographic characteristics and malaria risk factors were assessed by a face-to-face interview using a pretested questionnaire. Plasmodium parasites were detected by using microscopy on a blood film stained with 10% and 3% Giemsa stain. The data were analyzed using Statistical Package for Social Sciences software version 25, and statistical significance was reported at a p value < 0.05. Results Of the 318 study participants, 124 (39.0%; 95%CI = 33.6% - 44.6%) tested positive for Plasmodium infection. Plasmodium vivax, P. falciparum, and mixed infections were identified in 71 (57.3%), 47 (37.9%), and 6 (4.8%), respectively, among positive study participants. Individuals above the age of 15 (AOR = 2.704, 95% CI 1.370-5.336) were more likely to be infected with Plasmodium than under-five-year-old individuals. Rural residents (AOR = 2.56, 95% CI 1.281-5.098), those who sleep or work outside at night (AOR = 1.99, 95% CI 1.020-3.875), and individuals who did not use long-lasting insecticide-treated net (AOR = 3.26, 95% CI 1.633-6.499) and had a family member with a history of malaria (AOR = 2.902, 95%CI = 1.671 - 5.041) had higher odds of acquiring Plasmodium infection than their counterparts. Conclusion In our study area, malaria was a major health problem, with P. vivax being the dominant species. Multiple environmental and behavioural factors were associated with the infection acquisition. Therefore, urgent holistic intervention is required.
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Affiliation(s)
- Dagmawi Woldesenbet
- Department of Medical Laboratory Science, College of Medicine and Health Science, Wachemo University, Hossana, Ethiopia
| | - Yalewayker Tegegne
- Department of Medical Parasitology, School of Biomedical and Laboratory Science, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Muluken Semaw
- Medical Laboratory Unit, Sanja General Hospital, Amhara National Regional State Health Bureau, Sanja, Ethiopia
| | - Wagaw Abebe
- Department of Medical Laboratory Science, College of Health Science, Woldia University, Woldia, Ethiopia
| | - Silesh Barasa
- Department of Medical Laboratory Science, College of Medicine and Health Science, Arba Minch University, Arba Minch, Ethiopia
| | - Menberu Wubetie
- Department of Medical Laboratory Science, College of Medicine and Health Science, Dire Dawa University, Dire Dawa, Ethiopia
| | - Elias Tamene
- Department of Medical Laboratory Science, College of Medicine and Health Science, Wachemo University, Hossana, Ethiopia
| | - Marshet Anteneh
- Bahir Dar Blood Bank, Amhara National Regional State Health Bureau, Bahir Dar, Ethiopia
| | - Aschalew Yimer
- Medical Laboratory Unit, Teda Health Center, Amhara National Regional State Health Bureau, Gondar, Ethiopia
| | - Deneke Wolde
- Department of Medical Laboratory Science, College of Medicine and Health Science, Wachemo University, Hossana, Ethiopia
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Debash H, Nigatie M, Bisetegn H, Feleke DG, Tesfaw G, Amha A, Abate MA, Gedefie A. Malaria surveillance, outbreak investigation, response and its determinant factors in Waghemra Zone, Northeast Ethiopia: unmatched case-control study. Sci Rep 2023; 13:9938. [PMID: 37336906 DOI: 10.1038/s41598-023-36918-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 06/12/2023] [Indexed: 06/21/2023] Open
Abstract
Malaria is a major global public health concern, with around half of the world's population at risk of infection. It is one of the most common epidemic-prone diseases, resulting in on-going epidemics and significant public health problems. On September 12, 2022, Waghemra Zone malaria monitoring data revealed that the district was suffering an unusually high number of malaria cases. Therefore, the aim of this study was to assess the occurrence of malaria outbreaks and investigate contracting factors in Waghemra Zone, Northeast Ethiopia. A community-based case-control study with a 1:1 ratio was employed at Waghemra Zone from September 14 to November 27, 2022. A total of 260 individuals (130 cases and 130 controls) were included in the study. A structured questionnaire was used to collect the data. Malaria cases were confirmed by either microscopy or malaria rapid diagnostic tests. The magnitude of the outbreak was described by place, person, and time. A multivariable logistic regression analysis was conducted to identify malaria risk factors. A total of 13,136 confirmed cases of malaria were detected in the Waghemra zone, with an overall attack rate of 26.5 per 1000 and slide positivity rate was 43.0%. The predominant species was Plasmodium falciparum accounting for 66.1%. Children under five years old (AOR = 5.1; 95% CI 2.6-23.0), the presence of artificial water-holding bodies (AOR: 2.7; 95% CI 1.340-5.420), intermittent rivers closer to the living house (AOR = 4.9; 95% CI 2.51-9.62), sleeping outside a home (AOR = 4.9; 95% CI 2.51-9.62), and a lack of knowledge about malaria transmission and prevention (AOR: 9.7; 95% CI 4.459-20.930) were factors associated with malaria contraction. The overall attack rate for malaria during this outbreak was high. Children less than five years, the presence of mosquito breeding sites, staying outdoors overnight, and a lack of knowledge on malaria transmission and prevention were predictors of malaria. Early management of local vector breeding places, as well as adequate health education on malaria transmission and prevention methods, should be provided to the community to prevent such outbreaks in the future.
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Affiliation(s)
- Habtu Debash
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia.
| | - Marye Nigatie
- Department of Medical Laboratory Sciences, College of Health Sciences, Woldia University, Woldia, Ethiopia
| | - Habtye Bisetegn
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Daniel Getacher Feleke
- Department of Microbiology, Immunology and Parasitology, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Gebru Tesfaw
- Department of Internal Medicine, School of Medicine, Wollo University, Dessie, Ethiopia
| | - Askale Amha
- Waghemra Zone Health Department, Sekota, Ethiopia
| | - Megbaru Alemu Abate
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Bahirdar University, Bahirdar, Ethiopia
- The University of Queensland, School of Public Health, Brisbane, Australia
| | - Alemu Gedefie
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
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Debash H, Tesfaw G, Ebrahim H, Shibabaw A, Melese Y, Tilahun M, Alemayehu E, Mohammed O, Tesfaye M, Abate M. Symptomatic and asymptomatic malaria prevalence and its determinant factors in pastoral communities of Waghemira Zone, Northeast Ethiopia: A community-based cross-sectional study. Health Sci Rep 2023; 6:e1336. [PMID: 37305151 PMCID: PMC10248203 DOI: 10.1002/hsr2.1336] [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: 02/23/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/13/2023] Open
Abstract
Background and Aims Malaria elimination programs have also encountered numerous challenges, such as widespread asymptomatic carriers in endemic areas, which should be taken into account in malaria-control programs for effective transmission interruption. The purpose of this research was to determine the prevalence of symptomatic and asymptomatic malaria infections and associated factors, in pastoral communities. Methods A community-based cross-sectional study was conducted among selected districts in the Waghemra Zone, Northeast Ethiopia, from September to December 2022. A structured questionnaire was employed to collect sociodemographic data and associated risk factors. Plasmodium species were detected using light microscopy and a rapid diagnostic test. Data entry and analysis were carried out using SPSS version 26 software. The association between dependent and independent variables was explored by using multivariable logistic regression analyses. A statistically significant association was declared at a p-value of <0.05. Results The overall prevalence of malaria was 21.2% (134/633), with the predominant Plasmodium falciparum infections accounting for 67.8% (87/134). Among asymptomatic participants, 7.5% (34/451) and 10.2% (46/451) were diagnosed by rapid diagnostic test and light microscopy, respectively. On the other hand, the prevalence of symptomatic malaria was 44.5% (81/182) and 48.4% (88/182) as diagnosed by rapid diagnostic test and light microscopy, respectively. The presence of stagnant water near the houses, the utilization of insecticide-treated mosquito nets, the number of insecticide-treated mosquito nets, and outdoor stays at night were all positively linked with the prevalence of malaria. Conclusions The overall prevalence estimate for symptomatic and asymptomatic malaria was high. Malaria is still a public health problem in the study area. Malaria infection was associated with the presence of stagnant water near the houses, the utilization of insecticide-treated mosquito nets, the number of insecticide-treated mosquito nets, and outdoor stays at night. Improved access to all malaria interventions is needed to interrupt the transmission at the community level.
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Affiliation(s)
- Habtu Debash
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Gebru Tesfaw
- Department of Internal Medicine, School of Medicine, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Hussen Ebrahim
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Agumas Shibabaw
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Yimer Melese
- Department of Medical Laboratory Science, College of Medicine and Health SciencesDebre Berhan UniversityDebre BerhanEthiopia
| | - Mihret Tilahun
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Ermiyas Alemayehu
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Ousman Mohammed
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Melkam Tesfaye
- Department of Medical Laboratory Science, College of Medicine and Health SciencesWollo UniversityDessieEthiopia
| | - Mengistu Abate
- Department of Midwifery, School of Nursing and Midwifery College of Medicine and Health SciencesWollo UniversityDessieEthiopia
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Debash H, Bisetegn H, Ebrahim H, Feleke DG, Gedefie A, Tilahun M, Shibabaw A, Ebrahim E, Fiseha M, Abeje G. Prevalence and associated risk factors of malaria among febrile under-five children visiting health facilities in Ziquala district, Northeast Ethiopia: A multicenter cross-sectional study. PLoS One 2022; 17:e0276899. [PMID: 36301956 PMCID: PMC9612493 DOI: 10.1371/journal.pone.0276899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/16/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Malaria is among the leading causes of mortality and morbidity among under five children in developing countries. Ethiopia has set targets for controlling and eliminating malaria through at-risk group interventions. However, the disease remains a serious public health concern in endemic areas like in Wollo, Northeast Ethiopia. Therefore, this study aimed to determine malaria prevalence, risk factors and parasite density among under five children in Ziquala district. METHOD A facility-based cross-sectional study was conducted in Ziquala hospital, and Tsitsika, Mishra and Hamusit health centers in Ziquala district, Northeast Ethiopia, from January 2022 to April 2022. The study enrolled a total of 633 under five children using a systematic sampling technique. A capillary blood sample was collected from each child to prepared thin and thick blood smears. Smears were then stained with 10% Giemsa and examined under light microscope. A pretested structured questionnaire was used to collect on socio-demographic data, parental/caregiver knowledge, and malaria determining factors. Bivariable and multivariable logistic regression analysis was done to identify factors associated with malaria. RESULT The overall prevalence of malaria among children visiting Ziquala district health institutions was 24.6% (156/633). Plasmodium falciparum, P. vivax, and mixed infection (both species) accounted for 57.1%, 38.5%, and 4.5% of the cases, respectively. Regarding to parasite load, moderate parasitemia was the most common, followed by low and high parasitemia with the proportion of 53.8%, 31.4% and 14.7% parasite density, respectively. Malaria infection was linked to irregular utilization of insecticide-treated bed nets (AOR = 5.042; 95% CI: 2.321-10.949), staying outside at night (AOR = 2.109; 95% CI: 1.066-4.173), and parents not receiving malaria health education in the past six months (AOR = 4.858; 95% CI: 2.371-9.956). CONCLUSION Malaria was prevalent among children under the age of five enrolled in the study. The local government should focus on regular insecticide treated net utilization, reducing the risk of mosquito bites while sleeping outdoors at night and increasing public understanding of malaria prevention and control through health education would also help to minimize the burden of malaria.
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Affiliation(s)
- Habtu Debash
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Habtye Bisetegn
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Hussen Ebrahim
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Daniel Getacher Feleke
- Department of Microbiology, Immunology and Parasitology, College of Medicine and Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Alemu Gedefie
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Mihret Tilahun
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Agumas Shibabaw
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Endris Ebrahim
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Mesfin Fiseha
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Getu Abeje
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Samara University, Samara, Ethiopia
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Tairou F, Diallo A, Sy O, Kone A, Manga IA, Sylla K, Lelo S, Fall CB, Sow D, Ndiaye M, Faye B, Tine RCK. Malaria-associated risk factors among adolescents living in areas with persistent transmission in Senegal: a case-control study. Malar J 2022; 21:193. [PMID: 35725475 PMCID: PMC9208171 DOI: 10.1186/s12936-022-04212-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 06/03/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In Senegal, malaria morbidity has sharply decreased over these past years. However, malaria epidemiology remains heterogeneous with persistent transmission in the southeastern part of the country and many cases among older children and adolescents. Little is known about factors associated with clinical malaria among this group. A better understanding of malaria transmission among this newly emerging vulnerable group will guide future interventions targeting this population group. This study aimed to identify factors associated with clinical malaria among adolescents in Senegal. METHODS A case-control study was conducted from November to December 2020 in four health posts located in the Saraya district. Cases were defined as adolescents (10-19 years) with an uncomplicated malaria episode with fever (temperature > 37.5°) or a history of fever and positive malaria rapid diagnostic test (RDT). Controls were from the same age group, living in the neighbourhood of the case, presenting a negative RDT. A standardized, pre-tested questionnaire was administered to each study participant followed by a home visit to assess the participant's living conditions. Factors associated with clinical malaria were assessed using stepwise logistic regression analysis. RESULTS In total, 492 individuals were recruited (246 cases and 246 controls). In a multivariate analysis, factors associated with clinical malaria included non-use of long-lasting insecticidal net (LLIN) (aOR = 2.65; 95% CI 1.58-4.45), non-use of other preventive measures (aOR = 2.51; 95% CI 1.53-4.11) and indoor sleeping (aOR = 3.22; 95% CI 1.66-6.23). Protective factors included 15-19 years of age (aOR = 0.38; 95% CI 0.23-0.62), absence of stagnant water around the house (aOR = 0.27; 95% CI 0.16-0.44), having a female as head of household (aOR = 0.47; 95% CI 0.25-0.90), occupation such as apprentice (OR = 0.24; 95% CI 0.11-0.52). CONCLUSIONS The study revealed that environmental factors and non-use of malaria preventive measures are the main determinants of malaria transmission among adolescents living in areas with persistent malaria transmission in Senegal. Strategies aimed at improving disease awareness and access to healthcare interventions, such as LLINs, are needed to improve malaria control and prevention among these vulnerable groups.
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Affiliation(s)
- Fassiatou Tairou
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal.
| | | | - Ousmane Sy
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Aminatou Kone
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal.,Malaria Research and Training Center, University of Bamako, Bamako, Mali
| | - Isaac Akhenaton Manga
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Khadim Sylla
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Souleye Lelo
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Cheikh Binetou Fall
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Doudou Sow
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Magatte Ndiaye
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Babacar Faye
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
| | - Roger C K Tine
- Department of Medical Parasitology, University Cheikh Anta Diop of Dakar, Dakar, Senegal
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Alhassan Y, Dwomoh D, Amuasi SA, Nonvignon J, Bonful H, Tetteh M, Agyabeng K, Kotey M, Yawson AE, Bosomprah S. Impact of insecticide-treated nets and indoor residual spraying on self-reported malaria prevalence among women of reproductive age in Ghana: implication for malaria control and elimination. Malar J 2022; 21:120. [PMID: 35413832 PMCID: PMC9003985 DOI: 10.1186/s12936-022-04136-3] [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] [Received: 10/15/2021] [Accepted: 03/22/2022] [Indexed: 11/10/2022] Open
Abstract
Background The Global Fund alone contributed 56% of all international financing for malaria and has invested more than US$13.5 billion in malaria treatment, prevention, and control programmes by June 2021. These investments include interventions such as mosquito nets, indoor residual spraying, and preventive treatment for children and pregnant women. However, there is paucity of studies for assessment of such investments to a reduction in malaria prevalence. This study was aimed at quantifying the impact of household access to insecticide-treated nets (ITNs) and the indoor residual spraying (IRS) on self-reported malaria prevalence among women of reproductive age in Ghana. Methods The study analysed the 2016 Ghana Malaria Indicator Survey (MIS) data. The MIS is a nationwide survey that included women aged 15–49 years. Poisson regression model with inverse probability to treatment weighting was used to determine average treatment effect estimate of the two malaria interventions on self-reported malaria prevalence among women of reproductive age in Ghana. Results A total sample of 4861 women interviewed from the 2016 Ghana MIS was used for analysis. The prevalence of self-reported malaria in 2016 was 34.4% (95% CI [32.4%, 36.4%]). Approximately 80.0% of women lived in households with access to ITNs [Percentage (Pr) = 79.9%, (95% CI [78.0%, 81.7%])], 12.4% (95% CI [7.5%, 19.8%]) of the households had access to IRS and 11.4% (95% CI [7.0%, 18.0%]) of the households had access to both ITNs and IRS. Household access to only ITN contributed to 7.1 percentage point (pt) reduction in the self-reported malaria among women (95% CI [− 12.0%, − 2.1%], p = 0.005) whilst IRS at the households contributed to 6.8pt reduction in malaria prevalence (95% CI [− 12.0%, − 2.1%], p = 0.005). Households with access to both ITNs and IRS contributed to a 27.1pt reduction in self-reported malaria prevalence among women (95% CI [− 12.0%, − 2.1%], p = 0.005). Conclusion Access to both ITNs and application of IRS at the household level contributed to a significant reduction in self-reported malaria prevalence among women of reproductive age in Ghana. This finding confirms the need for integration of malaria control interventions to facilitate attainment of malaria elimination in Ghana. Supplementary Information The online version contains supplementary material available at 10.1186/s12936-022-04136-3.
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Affiliation(s)
- Yakubu Alhassan
- Department of Health Policy, Planning and Management, School of Public Health, University of Ghana, Accra, Ghana
| | - Duah Dwomoh
- Department of Biostatistics, School of Public Health, University of Ghana, Accra, Ghana.
| | - Susan Ama Amuasi
- Department of Physician Assistantship and Public Health, School of Medicine and Health Sciences, Central University College, Accra, Ghana
| | - Justice Nonvignon
- Department of Health Policy, Planning and Management, School of Public Health, University of Ghana, Accra, Ghana
| | - Harriet Bonful
- Department of Epidemiology, School of Public Health, University of Ghana, Accra, Ghana
| | - Mary Tetteh
- Department of Health Policy, Planning and Management, School of Public Health, University of Ghana, Accra, Ghana
| | - Kofi Agyabeng
- Department of Biostatistics, School of Public Health, University of Ghana, Accra, Ghana
| | - Martha Kotey
- Department of Epidemiology, School of Public Health, University of Ghana, Accra, Ghana
| | - Alfred E Yawson
- Department of Community Health, University of Ghana Medical School, University of Ghana, Accra, Ghana
| | - Samuel Bosomprah
- Department of Biostatistics, School of Public Health, University of Ghana, Accra, Ghana
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Mulugeta A, Assefa A, Eshetie A, Asmare B, Birhanie M, Gelaw Y. Six-year trend analysis of malaria prevalence at University of Gondar Specialized Referral Hospital, Northwest Ethiopia, from 2014 to 2019. Sci Rep 2022; 12:1411. [PMID: 35082339 PMCID: PMC8792057 DOI: 10.1038/s41598-022-05530-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/13/2022] [Indexed: 11/21/2022] Open
Abstract
Globally, malaria is the major public health disease caused by plasmodium species and transmitted by the bite of the female anopheles mosquito. Assessment of the trend of malaria prevalence is important in the control and prevention of the disease. Therefore, the objective of this study was to assess the six year trend of malaria prevalence at the University of Gondar Comprehensive Specialized Hospital, northwest Ethiopia, from 2014 to 2019. A retrospective laboratory registration logbook review study was conducted on the malaria blood film examination results at the University of Gondar Comprehensive Specialized Hospital. The data was collected by using a data extraction tool and entered into SPSS version 20 for analysis. Descriptive statistics were used to summarize the socio-demographic characteristics of study participants and presented by graphs, tables and texts. The binary logistic regression was also used to test the association the trend of malaria prevalence and different factors like sex, age, year, and season. From a total of 17,500 malaria blood film examinations, 1341 (7.7%) were confirmed for malaria parasites. Of the confirmed malaria cases, 47.2%, 45.6% and 7.2% were P. vivax, P. falciparum and mixed infection, respectively. The proportion of P. vivax was the predominant species in the first three study years (2014-2016) and P. falciparum became the predominant species in the last three study years (2017-2019). The odds of malaria prevalence was lower by 68%, 60% and 69% in the year 2017, 2018 and 2019 compared to 2014, respectively. It was also 1.41 times higher in males than in females. Moreover, the odds of malaria prevalence were 1.60, 1.64, 2.45 and 1.82 times higher in the age group of < 5, 5-14, 15-24 and 25-54 years old compared to the older age groups (> 54 years old), respectively. Even there was a significant declining in prevalence trend; malaria is still a major public health problem. The study showed that there was high seasonal fluctuation from year to year. Moreover, males and the younger age groups were more affected than females and old age groups, respectively. Therefore, malaria prevention and control activities should be strengthened and require extra efforts by considering these variability.
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Affiliation(s)
- Amanuel Mulugeta
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia
| | - Atsede Assefa
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia
| | - Atsede Eshetie
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia
| | - Birhanie Asmare
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia
| | - Meseret Birhanie
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia
| | - Yemataw Gelaw
- School Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia.
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Malaria prevalence and associated risk factors in Dembiya district, North-western Ethiopia. Malar J 2021; 20:372. [PMID: 34535130 PMCID: PMC8447688 DOI: 10.1186/s12936-021-03906-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 09/06/2021] [Indexed: 11/10/2022] Open
Abstract
Background Ethiopia embarked on combating malaria with an aim to eliminate malaria from low transmission districts by 2030. A continuous monitoring of malaria prevalence in areas under elimination settings is important to evaluate the status of malaria transmission and the effectiveness of the currently existing malaria intervention strategies. The aim of this study was to assess the prevalence of malaria and associated risk factors in selected areas of Dembiya district. Methods A cross-sectional parasitological and retrospective survey was conducted in the two localities of Dembiya District, selected based on their long standing history of implementing malaria prevention and elimination strategies. Thin and thick blood smears collected from 735 randomly selected individuals between October and December, 2018 were microscopically examined for malaria parasites. Six years (2012–2017) retrospective malaria data was collected from the medical records of the health centres. Structured questionnaires were prepared to collect information about the socio-economic data of the population. Logistic regression analysis was used to determine a key risk factor explaining the prevalence of malaria. The data were analysed using SPSS version 20 and p ≤ 0.05 were considered statistically significant. Results The 6-year retrospective malaria prevalence trend indicates an overall malaria prevalence of 22.4%, out of which Plasmodium falciparum was the dominant species. From a total of 735 slides examined for the presence of malaria parasites, 3.5% (n = 26) were positive for malaria parasites, in which P. falciparum was more prevalent (n = 17; 2.3%), Plasmodium vivax (n = 5; 0.7%), and mixed infections (n = 4; 0.5%). Males were 2.6 times more likely to be infected with malaria than females (AOR = 2.6; 95% CI 1.0, 6.4), and individuals with frequent outdoor activity were 16.4 times more vulnerable than individuals with limited outdoor activities (AOR = 16.4, 95% CI 1.8, 147.9). Furthermore, awareness about malaria transmission was significantly associated with the prevalence of malaria. Conclusions Malaria is still a public health problem in Dembiya district irrespective of the past and existing vector control interventions. Therefore, the authorities should work on designing alternative intervention strategies targeting outdoor malaria transmission and improving community awareness about malaria transmission and control methods in the study area. For this, continuous monitoring of vectors’ susceptibility, density, and behaviour is very important in such areas.
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Smith JL, Mumbengegwi D, Haindongo E, Cueto C, Roberts KW, Gosling R, Uusiku P, Kleinschmidt I, Bennett A, Sturrock HJ. Malaria risk factors in northern Namibia: The importance of occupation, age and mobility in characterizing high-risk populations. PLoS One 2021; 16:e0252690. [PMID: 34170917 PMCID: PMC8232432 DOI: 10.1371/journal.pone.0252690] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/20/2021] [Indexed: 11/19/2022] Open
Abstract
In areas of low and unstable transmission, malaria cases occur in populations with lower access to malaria services and interventions, and in groups with specific malaria risk exposures often away from the household. In support of the Namibian National Vector Borne Disease Program's drive to better target interventions based upon risk, we implemented a health facility-based case control study aimed to identify risk factors for symptomatic malaria in Zambezi Region, northern Namibia. A total of 770 febrile individuals reporting to 6 health facilities and testing positive by rapid diagnostic test (RDT) between February 2015 and April 2016 were recruited as cases; 641 febrile individuals testing negative by RDT at the same health facilities through June 2016 were recruited as controls. Data on socio-demographics, housing construction, overnight travel, use of malaria prevention and outdoor behaviors at night were collected through interview and recorded on a tablet-based questionnaire. Remotely-sensed environmental data were extracted for geo-located village residence locations. Multivariable logistic regression was conducted to identify risk factors and latent class analyses (LCA) used to identify and characterize high-risk subgroups. The majority of participants (87% of cases and 69% of controls) were recruited during the 2016 transmission season, an outbreak year in Southern Africa. After adjustment, cases were more likely to be cattle herders (Adjusted Odds Ratio (aOR): 4.46 95%CI 1.05-18.96), members of the police or other security personnel (aOR: 4.60 95%CI: 1.16-18.16), and pensioners/unemployed persons (aOR: 2.25 95%CI 1.24-4.08), compared to agricultural workers (most common category). Children (aOR 2.28 95%CI 1.13-4.59) and self-identified students were at higher risk of malaria (aOR: 4.32 95%CI 2.31-8.10). Other actionable risk factors for malaria included housing and behavioral characteristics, including traditional home construction and sleeping in an open structure (versus modern structure: aOR: 2.01 95%CI 1.45-2.79 and aOR: 4.76 95%CI: 2.14-10.57); cross border travel in the prior 30 days (aOR: 10.55 95%CI 2.94-37.84); and outdoor agricultural work at night (aOR: 2.09 95%CI 1.12-3.87). Malaria preventive activities were all protective and included personal use of an insecticide treated net (ITN) (aOR: 0.61 95%CI 0.42-0.87), adequate household ITN coverage (aOR: 0.63 95%CI 0.42-0.94), and household indoor residual spraying (IRS) in the past year (versus never sprayed: (aOR: 0.63 95%CI 0.44-0.90). A number of environmental factors were associated with increased risk of malaria, including lower temperatures, higher rainfall and increased vegetation for the 30 days prior to diagnosis and residing more than 5 minutes from a health facility. LCA identified six classes of cases, with class membership strongly correlated with occupation, age and select behavioral risk factors. Use of ITNs and IRS coverage was similarly low across classes. For malaria elimination these high-risk groups will need targeted and tailored intervention strategies, for example, by implementing alternative delivery methods of interventions through schools and worksites, as well as the use of specific interventions that address outdoor transmission.
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Affiliation(s)
- Jennifer L. Smith
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
| | - Davis Mumbengegwi
- Multidisciplinary Research Centre, University of Namibia, Windhoek, Namibia
| | - Erastus Haindongo
- School of Medicine, Faculty of Health Sciences, University of Namibia, Windhoek, Namibia
| | - Carmen Cueto
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
| | - Kathryn W. Roberts
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
| | - Roly Gosling
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
| | - Petrina Uusiku
- National Ministry of Health and Social Services, Windhoek, Namibia
| | - Immo Kleinschmidt
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Adam Bennett
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
| | - Hugh J. Sturrock
- Malaria Elimination Initiative, Global Health Group, University of California San Francisco (UCSF), San Francisco, California, United States of America
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Omotayo AI, Ande AT, Oduola AO, Olakiigbe AK, Ghazali AK, Adeneye A, Awolola ST. Community Knowledge, Attitude and Practices on Malaria Vector Control Strategies in Lagos State, South-West Nigeria. JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:1280-1286. [PMID: 33420501 DOI: 10.1093/jme/tjaa278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Indexed: 06/12/2023]
Abstract
Malaria is a leading public health challenge causing mortality and morbidity in sub-Saharan Africa. Prominent malaria vector control methods employed in sub-Saharan Africa include Long Lasting Insecticide Nets (LLINs) and Indoor Residual spraying (IRS). This study investigated knowledge, attitude and practices (KAP) of malaria vector control methods in Lagos, South-West Nigeria. Structured questionnaires were employed for the cross-sectional survey which was carried out between May and August 2018. Multi-stage sampling technique was used to select Lagos Mainland, Kosofe, and Ojo local government areas (LGAs). Five hundred and twenty questionnaires were used for the study. Data were analyzed for descriptive statistics, whereas χ 2 was used to determine influence of respondents' LGA, level of education and type of dwelling on respondents' attitude and practice. Respondents' LGAs have no significant impact on attitude and practice to malaria vector control methods. However, 'level of education' as well as 'type of dwelling structure' impacted significantly on some practices and attitude. Basically, IRS is the major tool employed in malaria vector control, but sometimes it is used in combination with other methods. A good number of residents also use LLINs. 'Choice of method' employed is mainly based on the effectiveness of method. General perception about LLINs and IRS is that they are effective, cheap and safer. Considering the widespread use of IRS and LLINs for malaria vector control in Lagos, implementation of malaria control programs should consider KAP to these two strategies.
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Affiliation(s)
- Ahmed I Omotayo
- Department of Zoology, University of Ilorin, Ilorin, Nigeria
- Department of Public Health and Epidemiology, Nigeria Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Adeolu T Ande
- Department of Zoology, University of Ilorin, Ilorin, Nigeria
| | | | - Abiodun K Olakiigbe
- Department of Public Health and Epidemiology, Nigeria Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Aishat K Ghazali
- Department of Pharmacy, National Orthopaedic Hospital, Igbobi, Lagos, Nigeria
| | - Adeniyi Adeneye
- Department of Public Health and Epidemiology, Nigeria Institute of Medical Research, Yaba, Lagos, Nigeria
| | - Samson T Awolola
- Department of Public Health and Epidemiology, Nigeria Institute of Medical Research, Yaba, Lagos, Nigeria
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Ahmed A, Mulatu K, Elfu B. Prevalence of malaria and associated factors among under-five children in Sherkole refugee camp, Benishangul-Gumuz region, Ethiopia. A cross-sectional study. PLoS One 2021; 16:e0246895. [PMID: 33606756 PMCID: PMC7894890 DOI: 10.1371/journal.pone.0246895] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/27/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Under-five year children are the most vulnerable group affected by malaria, they accounted for 61% of all malaria deaths worldwide. Sherkole refugee camp is stratified under high risk for malaria. Knowledge on malaria prevalence and associated factors among under-five children in Sherkole refugee camp is lacking. METHODS AND MATERIALS Institution-based cross-sectional survey was conducted among under-five children in Sherkole refugee camp from October to November 2019. Total sample size was 356. Stratified random sampling technique was employed to select the study participants. Standardized questionnaire was used to collect data. Care StartTM Malaria Rapid diagnostic test which detect histidine-rich protein 2 of P. falciparum and plasmodium lactate dehydrogenase of P. vivax was used to diagnose malaria. Bivariate and multivariable logistic regression analysis was done to identify factors associated with malaria. RESULTS A total of 356 participants were included in this study with response rate of 97.5%. The prevalence malaria was 3.9% (95% CI = 2.0-6.2). Outdoor stay at night (AOR = 3.9, 95% CI = 1.14-13.8), stagnant water near to house (AOR = 4.0, 95% CI = 1.14-14.6), and the number of under-five children per household (AOR = 3.0, 95% CI = 1.03-13.0) were found to increase the odds of getting malaria. Whereas, insecticide treated net (ITN)utilization (AOR = 0.22, 95% CI = 0.06-0.61) and Health information about malaria (AOR = 0.29, 95% CI = 0.06-0.65) reduce the odds of getting malaria. CONCLUSIONS AND RECOMMENDATIONS Malaria remains the major public health problem in Sherkole Refugee camp. Outdoor stay at night, stagnant water near to house, and number of under-five children per household were the risk factors for malaria. Health information dissemination that focuses on avoiding outdoor stay at night, eliminating stagnant water & using ITN, and considering number of under-five children per household during ITN distribution should be take into account.
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Affiliation(s)
- Abdulmuneim Ahmed
- Department of Field Epidemiology, College of Medicine and Health Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Kebadnew Mulatu
- Department of Field Epidemiology, College of Medicine and Health Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Berhanu Elfu
- Department of Epidemiology and Biostatics, College of Medicine and Health Science, Bahir Dar University, Bahir Dar, Ethiopia
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Yibeltal T, Abitew DB, Melese AB, Mulu Y. Determinants of HIV-malaria co-infection among people living with HIV on anti-retroviral therapy in Northeast Ethiopia: unmatched case control study. Trop Med Health 2020; 48:94. [PMID: 33292761 PMCID: PMC7702680 DOI: 10.1186/s41182-020-00286-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/17/2020] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND HIV and malaria are the leading causes of morbidity and mortality in the developing world including Ethiopia. Globally, HIV-malaria co-infection causes approximately 3 million deaths per year. However, both these infections are preventable if measures are taken on determinant factors. The objective of the study was therefore to assess factors associated with HIV-malaria co-infection among HIV-positive people who lived in Shewarobit district, northeast Ethiopia. METHODS Unmatched case-control study was conducted among people living with HIV (PLWHA) in Shewarobit district from February 28, 2018, to April 30, 2018. The sample size was determined taking the assumption of 95% CI, 85% power, 3:1 control to case ratio, the proportion of PLWHA-malaria coinfection of 22.7%, OR 2.73, and 10% non-response rate. The final sample size was 262 (66 cases and 196 controls). Cases were adults on anti-retroviral therapy and diagnosed positive for malaria by microscopy while controls were adults on anti-retroviral therapy and diagnosed negative for malaria by microscopy in the previous 6 months before the survey. RESULT The median age of cases and controls in years was 35 (IQR = 19) and 38 (IQR = 19) respectively. Variables that had a significant association with HIV-malaria co-infection were non-in-door residual spraying (adjusted odds ratio (AOR) = 4.91; 95% CI 4.03, 15.13), poor perception on the health risk of HIV-malaria co-infections (AOR = 4.11; 95% CI 1.28, 10.17), non-use of insecticidal treated bed nets (AOR = 6.21; 95%CI 2.74, 14.11), non-use of cotrimoxazole prophylaxis (AOR = 2.42; 95% CI 1.11, 5.28), and not received health education on the risk of HIV-malaria interaction (AOR = 4.11; 95% CI 1.24, 4.84). CONCLUSION Provision of cotrimoxazole prophylaxis, sleeping under an insecticidal treated bed net, and indoor residual spraying help to reduce HIV-malaria co-infection-associated morbidity/mortality.
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Affiliation(s)
- Tenaw Yibeltal
- Department of Epidemiology and Biostatistics, School of Public Health, College of Medicine and Health Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Dereje Birhanu Abitew
- Department of Public Health Nutrition, School of Public Health, College of Medicine and Health Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Amsalu Birara Melese
- Department of Environmental Health, School of Public Health, College of Medicine and Health Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
| | - Yared Mulu
- Department of Health System and Health Economics, School of Public Health, College of Medicine and Health Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Ethiopia
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A 7-Year Trend of Malaria at Primary Health Facilities in Northwest Ethiopia. J Parasitol Res 2020; 2020:4204987. [PMID: 32411421 PMCID: PMC7204144 DOI: 10.1155/2020/4204987] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/02/2019] [Accepted: 12/03/2019] [Indexed: 11/18/2022] Open
Abstract
Background Malaria is a severe parasitic disease that can progress to complications of the nervous system, respiratory distress, renal problems, metabolic acidosis, and hypoglycemia which can result in death in case of delay or absence of appropriate treatment. Even though health service facilities and vector control strategy in the community are implemented as control measures, variations in temperature and rainfall that can affect the life cycle of parasite are among the factors of malaria prevalence over the years. The aim of this trend analysis was to assess the prevalence and the impact of malaria over the seasons and years. Methods A cross-sectional study using retrospective information was conducted at two health centers Gorgora and Chuahit in Dembia district. The data was collected from lab logbooks routinely diagnosed and registered for seven years. A systematic sampling technique was used by taking patient results from lab logbooks during the first ten days of every month. Data were entered directly into the EpiData Entry software version 3.1 and analysed with the SPSS software version 20. Moreover, a chi-square test with a level of significance set at less than 5% was used. Results From a total of 11,879 clients that participated, 56.6% were males. The overall malaria prevalence in the last seven years was 21.8%, and the dominant parasite was P. falciparum which accounted for 15.6% of the participants which was threefold higher than P. vivax in the seven-year trend. Moreover, at Gorgora health center, the prevalence which was 15% at the beginning of the study (2012) rose to 33.9% and 30.5% in 2017 and 2018, respectively. In the analysis of the seven years, October and September in which the prevalence of malaria was 32.6% and 27.2%, respectively, constituted the peak months. High malaria prevalence was observed in autumn (September to November) season, and the least was observed in spring (March to May) with the prevalence of (17.8%) (p ≤ 0.001). Malaria attack showed significant variability among different age groups, and the age group 15-29 and males were the most affected (p ≤ 0.001). Conclusion In this study, malaria transmission remained high, which affected males more than females. Thus, appropriate season-based bed net use, health education, immediate patient treatment, and stagnant water drainage methods are needed to alleviate the problem.
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Gurmu AE, Kisi T, Shibru H, Graz B, Willcox M. Treatments used for malaria in young Ethiopian children: a retrospective study. Malar J 2018; 17:451. [PMID: 30518377 PMCID: PMC6280453 DOI: 10.1186/s12936-018-2605-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 11/29/2018] [Indexed: 11/10/2022] Open
Abstract
Background In Ethiopia, medicinal plants have been used to treat different diseases, including malaria, for many centuries. People living in rural areas are especially noted for their use of medicinal plants as a major component of their health care. This study aimed to study treatment-seeking and prioritize plants/plant recipes as anti-malarials, in Dembia district, one of the malarious districts in Northwest Ethiopia. Methods Parents of children aged under 5 years who had had a recent episode of fever were interviewed retrospectively about their child’s treatment and self-reported outcome. Treatments and subsequent clinical outcomes were analysed using Fisher’s exact test to elicit whether there were statistically significant correlations between them. Results and discussion Of 447 children with malaria-like symptoms, only 30% took the recommended first-line treatment (ACT) (all of whom were cured), and 47% took chloroquine (85% cured). Ninety-nine (22.2%) had used medicinal plants as their first-choice treatment. Allium sativum (Liliaceae), Justicia schimperiana (Acanthaceae), Buddleja polystachya (Scrophulariaceae) and Phytolacca dodecandra (Phytolaccaceae) were the most frequently used. Justicia schimperiana was the one associated with the best clinical outcomes (69% self-reported cure rate). However, the difference in clinical outcomes between the plants was not statistically significant. Conclusion In this study, only 30% of children took the recommended first-line treatment. 22% of children with presumed malaria were first treated with herbal medicines. The most commonly used herbal medicine was garlic, but J. schimperiana was associated with the highest reported cure rate of the plants. Further research is warranted to investigate its anti-malarial properties.
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Affiliation(s)
- Abyot Endale Gurmu
- Department of Pharmacognosy, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
| | - Teresa Kisi
- Department of Public Health, College of Health Sciences, Arsi University, Asella, Ethiopia
| | - Habteweld Shibru
- Department of Internal Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | | | - Merlin Willcox
- Department of Primary Care and Population Sciences, Aldermoor Health Centre, University of Southampton, Aldermoor Close, Southampton, SO16 5ST, UK
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