47 Works

Data from: Bushmeat genetics: setting up a reference framework for the DNA-typing of African forest bushmeat

Philippe Gaubert, Flobert Njiokou, Ayodeji Olayemi, Paolo Pagani, Sylvain Dufour, Emmanuel Danquah, Mac Elikem K. Nutsuakor, Gabriel Ngua, Alain-Didier Missoup, Pablo A. Tedesco, Rémy Dernat & Agostinho Antunes
The bushmeat trade in tropical Africa represents illegal, unsustainable off-takes of millions of tons of wild game – mostly mammals – per year. We sequenced four mitochondrial gene fragments (cyt b, COI, 12S, 16S) in >300 bushmeat items representing nine mammalian orders and 59 morphological species from five western and central African countries (Guinea, Ghana, Nigeria, Cameroon and Equatorial Guinea). Our objectives were to assess the efficiency of cross-species PCR amplification and to evaluate the...

Bird habitat preferences are related to habitat type and disturbance in the Owabi Wildlife Sanctuary, Ashanti Region (Ghana)

Collins Ayine Nsor, Nana Afua Dei Ankomah, John Mensah Nkrumah, Rockson Acolatse & Emmanuel Danquah
Context: Globally, an estimated 1.3% of the bird population has gone extinct over the last millennia largely due to loss of habitat preferences. Aims: This short-term study investigated disturbance-related drivers as predictors of bird habitat selection and assemblages in the Owabi Ramsar wetland. Methods: The study was carried out over a five-month period (May to September 2019), in four habitat types (farmlands, Built-up, forest reserve, and open water area). Data was collected in 84 plots...

Termite diversity is resilient to land-use change

Gabriel Quansah, Gabriel Quansah, Stephen Adu-Bredu, Vincent Logah, Yadvinder Malhi, Paul Eggleton & Catherine Parr
Cocoa is an important crop for Ghana’s economy, contributing 25% of Gross Domestic Product (GDP). The crop, however, is mainly cultivated on forest-derived soils and is a major cause of land-use change. Termites are an important biological component of tropical ecosystems providing numerous ecosystem services. Previous studies have indicated that termites are sensitive to forest disturbance and decrease in richness and abundance across land-use intensification gradients, with consequences for the essential services that they provide....

Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Abstract Background We aimed to assess the prevalence of Salmonella Typhi through DNA and IgM-antibody detection methods as a prelude to extended surveillance activities at sites in Ghana, Madagascar, and Ethiopia. Methods We performed species-specific real-time polymerase reaction (RT-PCR) to identify bacterial nucleic acid, and enzyme-linked immunosorbent assay (ELISA) for detecting HlyE/STY1498-, CdtB/STY1886-, pilL/STY4539- and Vi-antigens in blood and biopsy specimens of febrile and non-febrile subjects. We generated antigen-specific ELISA proxy cut-offs by change-point analyses,...

Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Abstract Background We aimed to assess the prevalence of Salmonella Typhi through DNA and IgM-antibody detection methods as a prelude to extended surveillance activities at sites in Ghana, Madagascar, and Ethiopia. Methods We performed species-specific real-time polymerase reaction (RT-PCR) to identify bacterial nucleic acid, and enzyme-linked immunosorbent assay (ELISA) for detecting HlyE/STY1498-, CdtB/STY1886-, pilL/STY4539- and Vi-antigens in blood and biopsy specimens of febrile and non-febrile subjects. We generated antigen-specific ELISA proxy cut-offs by change-point analyses,...

Data from: Task shifting interventions for cardiovascular risk reduction in low-and middle-income countries: a systematic review of randomized controlled trials

Joyce Gyamfi, Gbenga Ogedegbe, Jacob Plange-Rhule, Alisa Surkis, Diana Margot Rosenthal, Collins Airhihenbuwa, Juliet Iwelunmor & Richard Cooper
Objective: To evaluate evidence from published randomised controlled trials (RCTs) for the use of task-shifting strategies for cardiovascular disease (CVD) risk reduction in low-income and middle-income countries (LMICs). Design: Systematic review of RCTs that utilised a task-shifting strategy in the management of CVD in LMICs. Data Sources: We searched the following databases for relevant RCTs: PubMed from the 1940s, EMBASE from 1974, Global Health from 1910, Ovid Health Star from 1966, Web of Knowledge from...

Data from: Carbon stocks in the Guinea savanna of Ghana: estimates from three protected areas

Ebenezer D. Djagbletey, Vincent Logah, Nana Ewusi-Mensah, Henry O. Tuffour. & Henry O. Tuffour
Savannas are widespread in sub-Saharan Africa (SSA) and unarguably play major role in the global carbon balance. Extensive quantification of carbon stocks of the savannas in SSA will therefore contribute significantly to the global carbon budget in the era of climate change. In this study, we investigated the spatial distribution of carbon stocks of different soil fractions from the dominant tree species (Vitellaria paradoxa) of three forest reserves in the Guinea savanna of Ghana as...

Additional file 2 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 2. Distribution of ELISA OD values by antigen.

Additional file 1 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 1. Location of sites in Ethiopia [1A], Ghana [1B] and Madagascar [1C]. Notes: The location of each site is indicated as a black dot and the site’s name in red font; Ethiopia (Figure 1A): nine regional states (black italic, capital letters) and two chartered cities (black italic, lower letters) are shown;SNNPR=Southern Nations, Nationalities and People’s Region; Ghana (Figure 1B): ten regions (black italic, capital letters) are shown; Madagascar (Figure 1C): six provinces (black...

Additional file 1 of The incidence of TB and MDR-TB in pediatrics and therapeutic options: a systematic review

Sheetal Harichander, Ebenezer Wiafe, Kofi Boamah Mensah, Varsha Bangalee & Frasia Oosthuizen
Additional file 1. Search strategy.

Additional file 2 of The incidence of TB and MDR-TB in pediatrics and therapeutic options: a systematic review

Sheetal Harichander, Ebenezer Wiafe, Kofi Boamah Mensah, Varsha Bangalee & Frasia Oosthuizen
Additional file 2. Quality assessment tool.

Strengthening climate adaptation in the northern region of Ghana: insights from a stakeholder analysis

Enoch Yeleliere, Andy Bonaventure Nyamekye, Philip Antwi-Agyei & Emmanuel Frimpong Boamah
Climate change significantly impacts agriculture. Building an informed and collaborative process among stakeholders remains vital in minimizing climate risks and building climate-adaptive and resilient agricultural systems in sub-Saharan Africa (SSA). However, stakeholders’ involvement and collaboration in agriculture decision-making are framed by institutional, power, and resource dynamics, often ignoring vulnerable stakeholders most susceptible to climate shocks. These collaborative dynamics are less studied in the climate adaptation literature, especially in the context of Ghana and SSA. This...

sj-docx-1-cpc-10.1177_10556656221135926 - Supplemental material for Damaging Mutations in AFDN Contribute to Risk of Nonsyndromic Cleft Lip With or Without Cleft Palate

Waheed Awotoye, Peter A Mossey, Jacqueline B Hetmanski, Lord J J Gowans, Mekonen A Eshete, Wasiu L Adeyemo, Azeez Alade, Erliang Zeng, Olawale Adamson, Olutayo James, Azeez Fashina, Modupe O Ogunlewe, Thirona Naicker, Chinyere Adeleke, Tamara Busch, Mary Li, Aline Petrin, Abimbola Oladayo, Sami Kayali, Joy Olotu, Veronica Sule, Mohaned Hassan, John Pape, Emmanuel T Aladenika, Peter Donkor … & Azeez Butali
Supplemental material, sj-docx-1-cpc-10.1177_10556656221135926 for Damaging Mutations in AFDN Contribute to Risk of Nonsyndromic Cleft Lip With or Without Cleft Palate by Waheed Awotoye, Peter A Mossey, Jacqueline B Hetmanski, Lord J J Gowans, Mekonen A Eshete and Wasiu L Adeyemo, Azeez Alade, Erliang Zeng, Olawale Adamson, Olutayo James, Azeez Fashina, Modupe O Ogunlewe, Thirona Naicker, Chinyere Adeleke, Tamara Busch, Mary Li, Aline Petrin, Abimbola Oladayo, Sami Kayali, Joy Olotu, Veronica Sule, Mohaned Hassan, John Pape,...

Data from: Health insurance coverage with or without a nurse-led task shifting strategy for hypertension control: a pragmatic cluster randomized trial in Ghana

Gbenga Ogedegbe, Jacob Plange-Rhule, Joyce Gyamfi, William Chaplin, Michael Ntim, Kingsley Apusiga, Juliet Iwelunmor, Kwasi Yeboah Awudzi, Kofi Nana Quakyi, Jazmin N. Mogavero, Kiran Khurshid, Bamidele Tayo & Richard Cooper
Rationale: Poor access to care and physician shortage are major barriers to hypertension control in sub-Saharan Africa. Implementation of evidence-based systems-level strategies targeted at these barriers are lacking. Objective: To evaluate the comparative effectiveness of provision of health insurance coverage (HIC) alone versus a nurse-led task-shifting strategy for hypertension control (TASSH) plus HIC on systolic BP reduction among patients with uncontrolled hypertension in Ghana. Methods and Findings: Using a pragmatic cluster-randomized trial, 32 community health...

Proximity to forest mediates trade-offs between yields and biodiversity of birds in oil palm smallholdings

Keith C Hamer, Michael A Sasu, Linda Ofosuhene, Rebecca Asare, Benjamin Ossom, Catherine L Parr, Sarah A Scriven, Winston Asante, Rosemary Addico & Jane K Hill
There is much debate about how best to mitigate the effects of agricultural expansion on biodiversity, especially in the tropics. Recent studies have emphasised that proximity to natural habitats can enhance farmland biodiversity, yet few studies have examined whether or not such proximity mediates local trade-offs between yields and biodiversity, and hence alters conclusions about the ecological benefits of alternative farming strategies. Here we examine yield-biodiversity trade-offs, focusing on birds in oil palm smallholdings at...

Additional file 1 of Detection of Salmonella Typhi nucleic acid by RT-PCR and anti-HlyE, -CdtB, -PilL, and -Vi IgM by ELISA at sites in Ghana, Madagascar and Ethiopia

Ursula Panzner, Ondari Daniel Mogeni, Yaw Adu-Sarkodie, Trevor Toy, Hyon Jin Jeon, Gi Deok Pak, Se Eun Park, Yeetey Enuameh, Ellis Owusu-Dabo, Trinh Van Tan, Abraham Aseffa, Mekonnen Teferi, Biruk Yeshitela, Stephen Baker, Raphael Rakotozandrindrainy & Florian Marks
Additional file 1. Location of sites in Ethiopia [1A], Ghana [1B] and Madagascar [1C]. Notes: The location of each site is indicated as a black dot and the site’s name in red font; Ethiopia (Figure 1A): nine regional states (black italic, capital letters) and two chartered cities (black italic, lower letters) are shown;SNNPR=Southern Nations, Nationalities and People’s Region; Ghana (Figure 1B): ten regions (black italic, capital letters) are shown; Madagascar (Figure 1C): six provinces (black...

Responses of tropical tree seedlings in the forest-savanna boundary to combined effects of grass competition and fire

Hamza Issifu, Philippine Vergeer, George K. D. Ametsitsi, Jelle Klijn, Paolo Sartorelli, Millicent Tanson, Hypolite Bayor, Vincent Logah, Frank Van Langevelde, Elmar Veenendaal, Hamza Issifu, Philippine Vergeer, George K. D. Ametsitsi, Jelle Klijn, Paolo Sartorelli, Millicent Tanson, Hypolite Bayor, Vincent Logah, Frank Van Langevelde, Elmar Veenendaal., Hamza Issifu, Philippine Vergeer, George K. D. Ametsitsi, Jelle Klijn, Paolo Sartorelli … & Elmar Veenendaal.
Co-occurring tree functional types (TFTs) within forest-savanna transitions may differ in seedling responses to grass competition and fire in savannas. We performed a common garden experiment in the Guinea savanna of Ghana to test hypotheses related to competition effects on growth, allocation to root storage reserves and subsequent survival responses to dry season fire for savanna-transitional TFT (i.e., species occurring both in forest and savanna) and forest TFT. The experiment included factorial combinations of TFT,...

Additional file 1 of The incidence of TB and MDR-TB in pediatrics and therapeutic options: a systematic review

Sheetal Harichander, Ebenezer Wiafe, Kofi Boamah Mensah, Varsha Bangalee & Frasia Oosthuizen
Additional file 1. Search strategy.

Additional file 2 of The incidence of TB and MDR-TB in pediatrics and therapeutic options: a systematic review

Sheetal Harichander, Ebenezer Wiafe, Kofi Boamah Mensah, Varsha Bangalee & Frasia Oosthuizen
Additional file 2. Quality assessment tool.

Additional file 1 of Multi-drug resistant bacteria isolates from lymphatic filariasis patients in the Ahanta West District, Ghana

Bill Clinton Aglomasa, Cynthia Kyerewaa Adu-Asiamah, Samuel Opoku Asiedu, Priscilla Kini, Emmanuel Kobla Atsu Amewu, Kennedy Gyau Boahen, Solomon Wireko, Isaac Kingsley Amponsah, Yaw Duah Boakye, Vivian Etsiapa Boamah & Alexander Kwarteng
Additional file 1.

Damaging Mutations in AFDN Contribute to Risk of Nonsyndromic Cleft Lip With or Without Cleft Palate

Waheed Awotoye, Peter A Mossey, Jacqueline B Hetmanski, Lord J J Gowans, Mekonen A Eshete, Wasiu L Adeyemo, Azeez Alade, Erliang Zeng, Olawale Adamson, Olutayo James, Azeez Fashina, Modupe O Ogunlewe, Thirona Naicker, Chinyere Adeleke, Tamara Busch, Mary Li, Aline Petrin, Abimbola Oladayo, Sami Kayali, Joy Olotu, Veronica Sule, Mohaned Hassan, John Pape, Emmanuel T Aladenika, Peter Donkor … & Azeez Butali
ObjectivesNovel or rare damaging mutations have been implicated in the developmental pathogenesis of nonsyndromic cleft lip with or without cleft palate (nsCL ± P). Thus, we investigated the human genome for high-impact mutations that could explain the risk of nsCL ± P in our cohorts.Materials and Methods:We conducted next-generation sequencing (NGS) analysis of 130 nsCL ± P case-parent African trios to identify pathogenic variants that contribute to the risk of clefting. We replicated this analysis...

Effectiveness of school-based interventions for preventing tobacco smoking initiation among young people in low- and middle-income countries: a systematic review protocol

Divine Darlington Logo, Yeetey Enuameh, George Adjei, Arti Singh, Emmanuel Nakua, Edward Dassah, Felix Boakye Oppong & Ellis Owusu-Dabo
Abstract Background Despite the commendable progress made globally in tobacco control, the world is falling short of achieving a 30% relative reduction in current tobacco use by 2025. The African region remains the least in the efforts in fighting the tobacco epidemic and is most exploited by the tobacco industry. Schools have been continuously used for over three decades as a setting for delivering youth smoking prevention programmes; however, the evidence of the effectiveness of...

Supplement to: Global impact of the COVID-19 pandemic on stroke care and intravenous thrombolysis

Raul Nogueira, Muhammed Qureshi, Mohamad Abdalkader, Sheila Martins, Hiroshi Yamagami, Zhongming Qiu, Ossama Mansour, Anvitha Sathya, Anna Czlonkowska, Georgios Tsivgoulis, Diana Aguiar De Sousa, Jelle Demeestere, Robert Mikulik, Peter Vanacker, James Siegler, Janika Korv, Jose Biller, Conrad Liang, Navdeep Sangha, Alicia Zha, Alexandra Czap, Christine Holmstedt, Tanya Turan, George Ntaios, Konark Malhotra … & Thanh Nguyen
Objective: The objectives of this study were to measure the global impact of the pandemic on the volumes for intravenous thrombolysis (IVT), IVT transfers, and stroke hospitalizations over 4 months at the height of the pandemic (March 1 to June 30, 2020) compared with two control 4-month periods. Methods: We conducted a cross-sectional, observational, retrospective study across 6 continents, 70 countries, and 457 stroke centers. Diagnoses were identified by their ICD-10 codes and/or classifications in...

Fixed or mixed? variation in tree functional types and vegetation structure in a forest-savanna ecotone in West Africa

George K.D. Ametsitsi, Thomas Adjei-Gyapong, Vincent Logah, Jon Lloyd & Elmar M. Veenendaal
We analysed thirty-five 400-m2 plots encompassing forest, savanna and intermediate vegetation types in an ecotonal area in Ghana, West Africa. Across all plots, fire frequency was over a period of 15 years relatively uniform (once in 2–4 years). Although woodlands were dominated by species typically associated with savanna-type formations, and with forest formations dominated by species usually associated with closed canopies, these associations were non-obligatory and with a discrete non-specialized species grouping also identified. Across...

GCRF African SWIFT White Paper Policy Brief: The future of African weather forecasting

Lorraine Youds, Douglas Parker, Elijah A Adefisan , Philip Antwi-Agyei, Caroline L Bain , Emily Black, Alan Blyth, Andrew Dougill, Linda C Hirons , Victor S Indasi, Benjamin L Lamptey, Fionne Marshall, John Marsham, Thorwald H M Stein, Christopher M Taylor , Martin C Todd, Emma L Visman & Steven Woolnough
There is a huge opportunity for the African continent to benefit from the ‘silent revolution’ in weather forecasting that has been realised in the mid-latitudes throughout the twentieth century. While there are tremendous societal and economic benefits from advancing the science behind weather forecasting in sub-Saharan Africa, there are also significant barriers to realising advances. This policy brief examines the value of investment in African weather forecasting science and the technical & communication challenges that...

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Affiliations

  • Kwame Nkrumah University of Science and Technology
    47
  • Kintampo Health Research Centre
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  • Kangbuk Samsung Hospital
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  • University of Cambridge
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  • Federal Ministry of Health
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  • World Health Organization
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  • University of Basel
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  • University of Antananarivo
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  • Heidelberg University
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  • Swiss Tropical and Public Health Institute
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