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Bezinge L, deMello AJ, Shih CJ, Richards DA. Quantitative reagent monitoring in paper-based electrochemical rapid diagnostic tests. LAB ON A CHIP 2024; 24:3651-3657. [PMID: 38952211 DOI: 10.1039/d4lc00390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Paper-based rapid diagnostic tests (RDTs) are an essential component of modern healthcare, particularly for the management of infectious diseases. Despite their utility, these capillary-driven RDTs are compromised by high failure rates, primarily caused by user error. This limits their utility in complex assays that require multiple user operations. Here, we demonstrate how this issue can be directly addressed through continuous electrochemical monitoring of reagent flow inside an RDT using embedded graphenized electrodes. Our method relies on applying short voltage pulses and measuring variations in capacitive discharge currents to precisely determine the flow times of injected samples and reagents. This information is reported to the user, guiding them through the testing process, highlighting failure cases and ultimately decreasing errors. Significantly, the same electrodes can be used to quantify electrochemical signals from immunoassays, providing an integrated solution for both monitoring assays and reporting results. We demonstrate the applicability of this approach in a serology test for the detection of anti-SARS-CoV-2 IgG in clinical serum samples. This method paves the way towards "smart" RDTs able to continuously monitor the testing process and improve the robustness of point-of-care diagnostics.
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Affiliation(s)
- Léonard Bezinge
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland.
| | - Andrew J deMello
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland.
| | - Chih-Jen Shih
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland.
| | - Daniel A Richards
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland.
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Camara BS, El Ayadi AM, Thea AS, Traoré FB, Diallo EHM, Doré M, Loua JBD, Toure M, Delamou A. Mixed influence of COVID-19 on primary maternal and child health services in sub-Saharan Africa: a scoping review. Front Public Health 2024; 12:1399398. [PMID: 38979041 PMCID: PMC11228267 DOI: 10.3389/fpubh.2024.1399398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 06/03/2024] [Indexed: 07/10/2024] Open
Abstract
Introduction The COVID-19 pandemic profoundly affected the provision of and demand for routine health services in the world. The objective of this scoping review was to synthesize the influence of the COVID-19 pandemic on primary maternal and child health (MCH) services in sub-Saharan Africa. Methods The studies searched original studies reporting on the influence of the COVID-19 pandemic on primary MCH services. Four scientific databases (Pubmed, AJOL, CAIRN, CINAHL) and one gray literature database (Google Scholar) were used for this search. We also searched through the snowball citation approach and study reference lists. Results The influence of the COVID-19 pandemic on primary MCH services has been mixed in sub-Saharan Africa. Attendance at some health centers declined for antenatal care, deliveries, immunization, and pneumonia cases. Other health centers did not experience a significant influence of the pandemic on some of these services. In fact, antenatal care increased in a number of health centers. MCH service indicators which declined during COVID-19 were linked on the demand side to regulatory measures against COVID-19, the perceived unavailability of resources for routine services, the perceived negative attitude of staff in these facilities, the perceived transmission risk in primary health care facilities and the perceived anticipated stigma. On the supply side, factors included the lack of equipment in primary facilities, the lack of guidelines for providing care in the pandemic context, the regulatory measures against COVID-19 taken in these facilities, and the lack of motivation of providers working in these facilities. Conclusion This study recommends prioritizing the improvement of infection prevention measures in primary health care facilities for resilience of MCH indicators to epidemic crises. Improvement efforts should be tailored to the disparities in preventive measures between health centers. The identification of best practices from more resilient health centers could better guide these efforts.
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Affiliation(s)
- Bienvenu Salim Camara
- Africa Center of Excellence for Prevention and Control of Communicable Diseases (CEA-PCMT), Gamal Abdel Nasser University of Conakry, Conakry, Guinea
- Department of Public Health, Gamal Abdel Nasser University of Conakry, Conakry, Guinea
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
| | - Alison M El Ayadi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Bixby Center for Global Reproductive Health, University of California, San Francisco, San Francisco, CA, United States
| | - Appolinaire S Thea
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
| | - Fatoumata B Traoré
- Africa Center of Excellence for Prevention and Control of Communicable Diseases (CEA-PCMT), Gamal Abdel Nasser University of Conakry, Conakry, Guinea
- National Institute of Public Health, Bamako, Mali
| | - El Hadj M Diallo
- Africa Center of Excellence for Prevention and Control of Communicable Diseases (CEA-PCMT), Gamal Abdel Nasser University of Conakry, Conakry, Guinea
| | - Mathias Doré
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
| | - Jean-Baptiste D Loua
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
| | - Mabinty Toure
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
| | - Alexandre Delamou
- Africa Center of Excellence for Prevention and Control of Communicable Diseases (CEA-PCMT), Gamal Abdel Nasser University of Conakry, Conakry, Guinea
- Department of Public Health, Gamal Abdel Nasser University of Conakry, Conakry, Guinea
- Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Forécariah, Guinea
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Malm KL, Peprah NY, Mohammed W, Adomako BY, Oppong S, Boateng P, Adu GA, Dadzie D, Adza G, Forson I, Frimpong J. A retrospective analysis of malaria deaths in the pre- and intra- COVID 19 pandemic era, Ghana, 2016-2021. PLoS One 2024; 19:e0286212. [PMID: 38319929 PMCID: PMC10846731 DOI: 10.1371/journal.pone.0286212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 05/10/2023] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Global efforts over the years have resulted in a 27% reduction in malaria incidence and an estimated 51% reduction in malaria mortality since 2000. Meanwhile, COVID-19 pandemic disrupted provision and utilization of malaria services, leading to a surge in malaria incidence and mortality. Globally, 627000 malaria deaths were recorded in 2020, representing about 69000 more deaths compared to 2019. Also, 14 million more cases of malaria were recorded in 2020 compared to 2019. This study sought to determine whether excess malaria deaths were recorded in Ghana during the COVID-19 pandemic era. METHODS This was a descriptive study on routine malaria mortality data in Ghana for the period 2016 to 2021. Data was retrieved from the District Health Information Management System using a data extraction guide. Excess mortality was defined as occurrence of malaria deaths more than expected value for the period 2020 and 2021. The expected number of mortalities for 2020 and 2021 were determined using 2016 to 2019 average. Excess mortality (P-score) was estimated using the formula: [(reported mortalities-expected mortalities)/expected mortalities X 100%]. Data were summarized and processed in Microsoft excel version 16.0. Malaria mortality in Ghana and its regions was described using tables and line graphs. RESULTS An average of 535 malaria deaths per year were recorded nationwide from 2016 to 2020. About 50% (1603/3207) of deaths occurred in children aged less than five years. The p-scores for the country were -53% and -58% for 2020 and 2021 respectively. No region recorded excess all-age malaria mortality in 2020, rather significant reduction. Stratified by age, Greater Accra region reported 90% higher than expected deaths among persons aged five years and above in 2020 (p-score = 90%, 95% CI: 21-159). All regions reported reduction in under-five mortality in 2020. No significant excess malaria mortalities were reported among the regions in 2021. CONCLUSION Although negative p-scores suggested a decline in malaria mortalities nationwide, some regions recorded excess deaths during the COVID-19 pandemic era. There is a need to integrate COVID-19 control activities with malaria control and prevention efforts to mitigate the impact of COVID-19 on malaria case management and mortality.
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Affiliation(s)
- Keziah L. Malm
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Nana Yaw Peprah
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Wahjib Mohammed
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Boakye-Yiadom Adomako
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Samuel Oppong
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Paul Boateng
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - George Asumah Adu
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Dora Dadzie
- Department of Public Health, Cape Coast Teaching Hospital, Cape Coast, Ghana
| | - Grace Adza
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - Ivy Forson
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
| | - James Frimpong
- National Malaria Control Programme, Public Health Division, Ghana Health Service, Accra, Ghana
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Orish VN, Kyeremateng C, Appiah BP, Addei IB, Ayaba MA, Kwadzokpui PK, Marinkovic A, Prakash S, Okorie C, Izurieta R, Sanyaolu A. Knowledge and perception of asymptomatic malaria in the Volta region of Ghana. Trans R Soc Trop Med Hyg 2024; 118:33-43. [PMID: 37534813 DOI: 10.1093/trstmh/trad049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/19/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND The control of asymptomatic malaria is considered a key aspect of malaria control. This study aimed to assess the knowledge and perception of asymptomatic malaria among people in Ho municipality of the Volta region. METHODS A descriptive cross-sectional study involving questionnaire administration was conducted among randomly sampled residents of the Ho municipality of the Volta region of Ghana. Using SPSS version 25 statistical software, frequency distributions and proportions were computed for sociodemographic variables while knowledge and perception about asymptomatic malaria were computed into percentages and categorized into three levels based on Bloom's cut-off for further analysis. Findings with p-values <0.05 were considered statistically significant. RESULTS Among the 200 participants, 197 (98.5%) were aware of malaria. The majority (116 [58.0%]) of the study participants agreed to the possibility of asymptomatic infection, but most (133 [66.5%]) of the community members did not know that asymptomatic individuals can still transmit infections. The majority of the participants (184 [92.0%]) showed interest in getting further education on asymptomatic malaria and a significant majority (180 [90.0%]) expressed a willingness to take treatment after testing positive without showing any symptoms. CONCLUSIONS Asymptomatic malaria control can be achieved through a mass testing and treatment strategy, therefore improving the knowledge and perception about asymptomatic malaria might improve malaria control.
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Affiliation(s)
- Verner N Orish
- Department of Microbiology and Immunology, School of Medicine, University of Health and Allied Sciences, Ho, Volta Region, Ghana
| | - Caleb Kyeremateng
- School of Medicine, University of Health and Allied Sciences, Ho, Ghana
| | - Baffoe P Appiah
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Health and Allied Sciences, Ho, Ghana
| | - Isaac B Addei
- School of Medicine, University of Health and Allied Sciences, Ho, Ghana
| | - Moses A Ayaba
- School of Medicine, University of Health and Allied Sciences, Ho, Ghana
| | | | | | | | - Chuku Okorie
- Department of Allied Health Sciences, Union College of Union County, Plainfield Campus, NJ, USA
| | - Ricardo Izurieta
- Department of Global Communicable Diseases, College of Public Health, University of South Florida, Tampa, FL, USA
| | - Adekunle Sanyaolu
- Department of Public Health, Federal Ministry of Health, Abuja, Nigeria
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Heuschen AK, Abdul-Mumin A, Abubakari A, Agbozo F, Lu G, Jahn A, Müller O. Effects of the COVID-19 pandemic on general health and malaria control in Ghana: a qualitative study with mothers and health care professionals. Malar J 2023; 22:78. [PMID: 36872343 PMCID: PMC9986038 DOI: 10.1186/s12936-023-04513-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/24/2023] [Indexed: 03/07/2023] Open
Abstract
BACKGROUND COVID-19 has severely impacted health systems and the management of non-COVID-19 diseases, including malaria, globally. The pandemic has hit sub-Saharan Africa less than expected; even considering large underreporting, the direct COVID-19 burden was minor compared to the Global North. However, the indirect effects of the pandemic, e.g. on socio-economic inequality and health care systems, may have been more disruptive. Following a quantitative analysis from northern Ghana, which showed significant reductions in overall outpatient department visits and malaria cases during the first year of COVID-19, this qualitative study aims to provide further explanations to those quantitative findings. METHODS In the Northern Region of Ghana, 72 participants, consisting of 18 health care professionals (HCPs) and 54 mothers of children under the age of five, were recruited in urban and rural districts. Data were collected using focus group discussions with mothers and through key informant interviews with HCPs. RESULTS Three main themes occurred. The first theme-general effects of the pandemic-includes impacts on finances, food security, health service provision as well as education and hygiene. Many women lost their jobs, which increased their dependance on males, children had to drop out of school, and families had to cope with food shortages and were considering migration. HCPs had problems reaching the communities, suffered stigmatisation and were often barely protected against the virus. The second theme-effects on health-seeking-includes fear of infection, lack of COVID-19 testing capacities, and reduced access to clinics and treatment. The third theme-effects on malaria-includes disruptions of malaria preventive measures. Clinical discrimination between malaria and COVID-19 symptoms was difficult and HCPs observed increases in severe malaria cases in health facilities due to late reporting. CONCLUSION The COVID-19 pandemic has had large collateral impacts on mothers, children and HCPs. In addition to overall negative effects on families and communities, access to and quality of health services was severely impaired, including serious implications on malaria. This crisis has highlighted weaknesses of health care systems globally, including the malaria situation; a holistic analysis of the direct and indirect effects of this pandemic and an adapted strengthening of health care systems is essential to be prepared for the future.
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Affiliation(s)
- Anna-Katharina Heuschen
- Institute for Global Health, University Hospital Heidelberg, Ruprecht-Karls-University, Heidelberg, Germany.
| | - Alhassan Abdul-Mumin
- School of Medicine, Department of Paediatrics and Child Health, University for Development Studies, Tamale, Ghana
- Tamale Teaching Hospital, Tamale, Ghana
| | - Abdulai Abubakari
- School of Public Health, Department of Global Health, University for Development Studies, Tamale, Ghana
| | - Faith Agbozo
- Fred Binka School of Public Health, Department of Family and Community Health, University of Health and Allied Sciences, Hohoe, Ghana
| | - Guangyu Lu
- School of Public Health, Medical School, Yangzhou University, Yangzhou, China
| | - Albrecht Jahn
- Institute for Global Health, University Hospital Heidelberg, Ruprecht-Karls-University, Heidelberg, Germany
| | - Olaf Müller
- Institute for Global Health, University Hospital Heidelberg, Ruprecht-Karls-University, Heidelberg, Germany
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Impact of the COVID-19 Pandemic on Malaria Control in Africa: A Preliminary Analysis. Trop Med Infect Dis 2023; 8:tropicalmed8010067. [PMID: 36668974 PMCID: PMC9863638 DOI: 10.3390/tropicalmed8010067] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/17/2023] Open
Abstract
Malaria remains a significant public health concern in Africa, and the emerging coronavirus disease 2019 (COVID-19) pandemic may have negatively impacted malaria control. Here, we conducted a descriptive epidemiological analysis of malaria globally, and preliminarily explored the impact of COVID-19 on the malaria elimination program in regions of Africa (AFR). The present analysis found that there was a vast heterogeneity of incidence of deaths caused by malaria globally in different continents, and the highest malaria burden was observed in AFR. In 2020, there was an obviously increasing trend in the malaria epidemic in AFR, while the other four continents exhibited stable and declining patterns. Historically, malaria has been largely concentrated in high-malaria-burden regions, such as West Africa, and there has been an obvious increasing trend in Nigeria. These data suggest that dynamic changes in the malaria epidemic situation worldwide have primarily originated from AFR, and West Africa has played an important role in the global malaria increase in recent years. Under the coercion of COVID-19, multiple factors have co-driven the increase in malaria in AFR, including insufficient financial investments, a high native malaria burden, weak surveillance systems, limited medical resources, and low socioeconomic development levels. In addition, the shift of medical resources (e.g., health workers and personal protective equipment (PPE), the manufacturing of diagnostic reagents, and drugs) from malaria control to emergency COVID-19 response in the pandemic's early stage caused disruptions, reductions, and delays in pillar malaria control measures, leading to a significant negative impact on malaria control. In particular, a funding shortfall at both the international and domestic levels led to a "significant threat," resulting in vast gaps in access to proven malaria control tools. Although there has been a declining trend in malaria control over time due to COVID-19, the effect still cannot be ignored. Hence, we recommend the implementation of medical and technical resource assistance as a priority strategy to support Africa (West Africa) in order to curb further transmission.
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