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Aliaga-Samanez A, Romero D, Murray K, Segura M, Real R, Olivero J. Potential climate change effects on the distribution of urban and sylvatic dengue and yellow fever vectors. Pathog Glob Health 2024; 118:397-407. [PMID: 38972071 PMCID: PMC11338215 DOI: 10.1080/20477724.2024.2369377] [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] [Indexed: 07/09/2024] Open
Abstract
Climate change may increase the risk of dengue and yellow fever transmission by urban and sylvatic mosquito vectors. Previous research primarily focused on Aedes aegypti and Aedes albopictus. However, dengue and yellow fever have a complex transmission cycle involving sylvatic vectors. Our aim was to analyze how the distribution of areas favorable to both urban and sylvatic vectors could be modified as a consequence of climate change. We projected, to future scenarios, baseline distribution models already published for these vectors based on the favorability function, and mapped the areas where mosquitoes' favorability could increase, decrease or remain stable in the near (2041-2060) and distant (2061-2080) future. Favorable areas for the presence of dengue and yellow fever vectors show little differences in the future compared to the baseline models, with changes being perceptible only at regional scales. The model projections predict dengue vectors expanding in West and Central Africa and in South-East Asia, reaching Borneo. Yellow fever vectors could spread in West and Central Africa and in the Amazon. In some locations of Europe, the models suggest a reestablishment of Ae. aegypti, while Ae. albopictus will continue to find new favorable areas. The results underline the need to focus more on vectors Ae. vittatus, Ae. luteocephalus and Ae. africanus in West and Central sub-Saharan Africa, especially Cameroon, Central Africa Republic, and northern Democratic Republic of Congo; and underscore the importance of enhancing entomological monitoring in areas where populations of often overlooked vectors may thrive as a result of climate changes.
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Affiliation(s)
- Alisa Aliaga-Samanez
- Grupo de Biogeografía, Diversidad y Conservación, Departamento de Biología Animal, Universidad de Málaga, Facultad de Ciencias, Malaga, Spain
| | - David Romero
- Grupo de Biogeografía, Diversidad y Conservación, Departamento de Biología Animal, Universidad de Málaga, Facultad de Ciencias, Malaga, Spain
| | - Kris Murray
- Medical Research Council Unit the Gambia at London School of Hygiene and Tropical Medicine, Fajara, The Gambia
- Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Marina Segura
- Servicio de Sanidad Exterior, Centro de Vacunación Internacional, Ministerio de Sanidad, Consumo y Bienestar Social, Estación Marítima, Malaga, Spain
| | - Raimundo Real
- Grupo de Biogeografía, Diversidad y Conservación, Departamento de Biología Animal, Universidad de Málaga, Facultad de Ciencias, Malaga, Spain
- Instituto IBYDA, Centro de Experimentación Grice-Hutchinson, Malaga, Spain
| | - Jesús Olivero
- Grupo de Biogeografía, Diversidad y Conservación, Departamento de Biología Animal, Universidad de Málaga, Facultad de Ciencias, Malaga, Spain
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Mensah EA, Gyasi SO, Nsubuga F, Alali WQ. A proposed One Health approach to control yellow fever outbreaks in Uganda. ONE HEALTH OUTLOOK 2024; 6:9. [PMID: 38783349 PMCID: PMC11119388 DOI: 10.1186/s42522-024-00103-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/26/2024] [Indexed: 05/25/2024]
Abstract
Yellow Fever (YF) is an acute viral hemorrhagic disease. Uganda is located within the Africa YF belt. Between 2019 and 2022, the Ugandan Health Authorities reported at least one outbreak of YF annually with an estimated 892 suspected cases, on average per year. The persistent recurrence of this disease raises significant concerns about the efficacy of current response strategies and prevention approaches. YF has been recognized as a One Health issue due to its interrelatedness with the animal and environmental domains. Monkeys have been recognized as the virus primary reservoir. The YF virus is transmitted through bites of infected Aedes or Haemagogus species mosquitoes between monkeys and humans. Human activities, monkey health, and environmental health issues (e.g., climate change and land use) impact YF incidence in Uganda. Additionally, disease control programs for other tropical diseases, such as mosquitoes control programs for malaria, impact YF incidence.This review adopts the One Health approach to highlight the limitations in the existing segmented YF control and prevention strategies in Uganda, including the limited health sector surveillance, the geographically localized outbreak response efforts, the lack of a comprehensive vaccination program, the limited collaboration and communication among relevant national and international agencies, and the inadequate vector control practices. Through a One Health approach, we propose establishing a YF elimination taskforce. This taskforce would oversee coordination of YF elimination initiatives, including implementing a comprehensive surveillance system, conducting mass YF vaccination campaigns, integrating mosquito management strategies, and enhancing risk communication. It is anticipated that adopting the One Health approach will reduce the risk of YF incidence and outbreaks.
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Affiliation(s)
- Emmanuel Angmorteh Mensah
- Department of Biostatistics & Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA
| | - Samuel Ofori Gyasi
- Department of Immunization, Vaccines and Biologicals, World Health Organization Country Office, Kampala, Uganda
| | - Fred Nsubuga
- Division of Immunization and Vaccines, Ministry of Health, Kampala, Uganda
| | - Walid Q Alali
- Department of Biostatistics & Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA.
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Judson SD, Kenu E, Fuller T, Asiedu-Bekoe F, Biritwum-Nyarko A, Schroeder LF, Dowdy DW. Yellow fever in Ghana: Predicting emergence and ecology from historical outbreaks. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.29.24301911. [PMID: 38352600 PMCID: PMC10862978 DOI: 10.1101/2024.01.29.24301911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Understanding the epidemiology and ecology of yellow fever in endemic regions is critical for preventing future outbreaks. Ghana is a high-risk country for yellow fever. In this study we estimate the epidemiology, ecological cycles, and areas at risk for yellow fever in Ghana based on historical outbreaks. We identify 2371 cases and 887 deaths (case fatality rate 37.4%) from yellow fever reported in Ghana from 1910 to 2022. Since implementation of routine childhood vaccination in 1992, the estimated mean annual number of cases decreased by 81% and the geographic distribution of yellow fever cases also changed. While there have been multiple large historical outbreaks of yellow fever in Ghana from the urban cycle, recent outbreaks have originated among unvaccinated nomadic groups in rural areas with the sylvatic/savanna cycles. Using machine learning and an ecological niche modeling framework, we predict areas in Ghana that are similar to where prior yellow fever outbreaks have originated based on temperature, precipitation, landcover, elevation, and human population density. We find differences in predictions depending on the ecological cycles of outbreaks. Ultimately, these findings and methods could be used to inform further subnational risk assessments for yellow fever in Ghana and other high-risk countries.
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Affiliation(s)
- Seth D. Judson
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ernest Kenu
- Department of Epidemiology, University of Ghana School of Public Health, Accra, Ghana
| | - Trevon Fuller
- Institute of the Environment and Sustainability, University of California Los Angeles, USA
| | | | | | - Lee F. Schroeder
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - David W. Dowdy
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
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Malik S, pandey I, Kishore S, Sundarrajan T, Nargund SL, Ghosh A, Bin Emran T, Chaicumpa W, Dhama K. Yellow fever virus, a mosquito-borne flavivirus posing high public health concerns and imminent threats to travellers - an update. Int J Surg 2023; 109:134-137. [PMID: 36799827 PMCID: PMC10389439 DOI: 10.1097/js9.0000000000000086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/18/2022] [Indexed: 02/18/2023]
Affiliation(s)
- Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand
| | - Ishan pandey
- Department of Biotechnology, AKS University, Satna, Madhya Pradesh
| | - Shristi Kishore
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand
| | - T. Sundarrajan
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRMIST, Kattankulathur, Tamil Nadu
| | - Shachindra L. Nargund
- Department of Pharmaceutical Chemistry, Nargund College of Pharmacy, Bengaluru, Karnataka
| | - Arbinda Ghosh
- Department of Botany, Microbiology Division, Gauhati University, Guwahati, Assam
| | - Talha Bin Emran
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
| | - Wanpen Chaicumpa
- Department of Parasitology, Center of Research Excellence in Therapeutic Proteins and Antibody Engineering, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Izatnagar, Uttar Pradesh, India
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Mohapatra RK. Another neglected tropical disease yellow fever re-emerges in African countries: Potential threat in the COVID-19 era which needs comprehensive investigations - Correspondence. Int J Surg 2022; 108:106988. [PMID: 36368420 PMCID: PMC9643270 DOI: 10.1016/j.ijsu.2022.106988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/03/2022] [Indexed: 11/11/2022]
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