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... A major challenge in the fight to effectively control malaria is the emergence of resistant parasite to drugs used in therapy as well as for chemoprevention. In this study, single nucleotide polymorphisms (SNPs) associated with Plasmodium falciparum resistance to sulfadoxine-pyrimethamine (SP), one of the partner drugs in artemisinin-based therapies (ACTs) were studied in asymptomatic P. falciparu ...
... In an integrated poultry-fish (IPF) farming system, fish and bird are reared simultaneously. It is a common practice in Sub-Saharan Africa countries like Nigeria, Cameroon, Madagascar, and Benin, offering economic benefits to farmers and minimizing farm running costs. It seems like another way for farmers to manage poultry waste as it is a common practice in IPF farm settings to feed reared fishes ...
Mycobacterium tuberculosis; antigen detection; cross-sectional studies; drug resistance; genes; genotyping; infection; issues and policy; levofloxacin; loci; moxifloxacin; mutation; phylogeny; phylogeography; relapse; tuberculosis; Bangladesh; Cameroon; China; India
Abstract:
... Phylogenetic diversity and distinct phylogeographic distribution of Mycobacterium tuberculosis (MTB) contribute to regional differences in drug resistance. The emergence of pre-extensively drug resistant tuberculosis (Pre-XDR-TB) becomes obstacles to achieve End TB strategy in Bangladesh. This cross-sectional study was conducted to identify the strains of different lineages of MTB, their variation ...
... The intensification of aquaculture in Cameroon requires efficient screening methods to control veterinary drug residues in fish. This is why the charm II radio receptor technique for the detection of antimicrobial residues in aquaculture fish initiated in Belgium was transferred to Cameroon according to Commission Decision 2002/657/EC. The validation parameters included the following tests: repeat ...
... Digital soil mapping (DSM) approaches provide soil information by utilising the relationship between soil properties and environmental variables. Calibration of DSM models requires measurements that may often have substantial measurement errors which propagate to the DSM outputs and need to be accounted for. This study applied a geostatistical‐based DSM approach that incorporates measurement error ...
World Bank; anaerobic digestion; biogas; clean energy; databases; electricity; freshwater; gas production (biological); human population; infrastructure; methane; municipal wastewater; organic matter; potential energy; sanitation; sludge; sustainable development; wastewater treatment; Angola; Cameroon; Central African Republic; Democratic Republic of the Congo; Gabon; Guinea; Liberia; Nigeria; Republic of the Congo; Sierra Leone
Abstract:
... Several anthropogenic activities reduce the supply of freshwater to living organisms in all ecological systems, particularly the human population. Organic matter in derived wastewater can be converted into potential energy, such as biogas (methane), through microbial transformation during anaerobic digestion (AD). To address the current lack of data and values for wastewater generation in Sub-Saha ...
Fernando Rubinstein; Bertrand Hugo Mbatchou Ngahane; Mattias Nilsson; Miranda Baame Esong; Emmanuel Betang; André Pascal Goura; Vimbai Chapungu; Dan Pope; Elisa Puzzolo
... Over 61 % of Cameroonians continue to rely on polluting fuels for cooking with negative consequences for health and the environment. To understand current and potential use of electricity as a clean energy source for cooking (eCooking), we conducted a mixed-methods study among households from three major urban/peri-urban centres in Cameroon: Douala, Yaoundé and Mbalmayo. Survey data from 1509 hous ...
Aedes albopictus; adults; arboviruses; eggs; linear models; monitoring; ovitraps; population dynamics; public health; rural areas; species diversity; urban areas; Cameroon
Abstract:
... Arbovirus diseases represent a significant public health problem in Cameroon and vector surveillance is a key component of prevention strategies. However, there is still not enough evidence of the efficacy of different sampling methods used to monitor Aedes mosquito population dynamic in different epidemiological settings. The present study provides data on the evaluation of ovitraps and different ...
... Confronted with climate change, farmers are increasingly resorting to sustainable agricultural practices like agroforestry as an adaptation measure to the adverse effects of climate change. In this perspective, this study assessed different agroforestry systems and the components there in, as well as the factors affecting farmers’ choice of agroforestry systems as adaptation measures to climate ch ...
... Ficus vogelii is a terrestrial tree, used in Cameroonian pharmacopeia to treat various inflammatory diseases such as rheumatism. Accordingly, the present work aimed at evaluating anti-inflammatory potential of Ficus vogelii aqueous extract and identified phytochemicals of interest. The characterization of the phytochemicals was carried out by HPLC-ESI-MSⁿ. The anti-inflammatory potential of the aq ...
... Bombax costatum Pellegr. & Vuillet is used traditionally in Northern Cameroon to treat memory impairment, anxiety, insomnia and depression. Investigating the effect of Bombax costatum stem bark aqueous extract (BC) on depression associated with amnesia and vascular disorder, using a chronic mild unpredictable stress (CMUS) model in rats for 30 days. Sucrose Preference Test (SPT), Forced Swimming T ...
Demewoz Haile; Kenneth H. Brown; Christine M. McDonald; Hanqi Luo; Michael Jarvis; Ismael Teta; Alex Ndjebayi; Guintang Assiene Jules Martial; Stephen A. Vosti; Reina Engle-Stone
World Health Organization; cost effectiveness; food intake; food safety; medicine; nutrient requirements; zinc; Cameroon
Abstract:
... Nutrient reference values (NRVs) for zinc set by several expert groups differ widely and may affect the predicted prevalence of inadequate zinc intake. We examined this possibility using NRVs published by four different authorities and nationally representative dietary intake data collected among children aged 12–59 months and women in Cameroon. Usual zinc intake was estimated from 24 h recall dat ...
... The tsetse flies, biological vectors of African trypanosomes, harbour a variety of bacteria involved in their vector competence that may help in developing novel vector control tools. This study provides an inventory of tsetse bacterial communities in Cameroon and explores their possible associations with trypanosome establishment in Glossina palpalis palpalis. High throughput sequencing of the V3 ...
... Pesticide utilization in agriculture has many harmful effects of non-target organisms. This study assessed pesticide risk to bees using PRIMET (Pesticide Risks in the Tropics to Man, Environment and Trade), a pesticide risk model. Data was collected on pesticide application scheme (active ingredient, crop, dose, number of applications, application interval) and ecotoxicological properties (LD₅₀₋Bₑ ...
... This study focused on assessing contamination levels of heavy metal elements (Cr, Co, Ni, Zn, Cu, Mo, Cd, and Pb) in surface sediments for the Ebolowa Municipal Lake (EML) basin in Southern Cameroon and identifying possible pollution sources. Twenty-one samples from the EML and its tributaries (Mfoumou and Bengo'o) were subjected to geochemical analysis by inductively coupled plasma-mass spectrome ...
basins; dry season; groundwater; irrigation; savannas; solar energy; water shortages; water table; watersheds; Cameroon
Abstract:
... The availability of water for agricultural use in the savannah plateau of Adamawa, Cameroon, is addressed in this paper. Specific field tests coupled with climatic data analysis have helped to characterize the hydrological and hydrogeological conditions of water resources in a small catchment. An agricultural suitability map, based on the water availability during the dry season, is produced. Meas ...
United States Environmental Protection Agency; at-risk population; breathing; carcinogenicity; chromium; energy-dispersive X-ray analysis; environmental protection; humans; ingestion; pollution; risk; Cameroon
Abstract:
... A study of trace elements pollution in the cobalt–nickel mining area of Nkamouna-Kongo (East Region of Cameroon) and their intimation to the risk of human exposure was carried out. A large spatial variability of concentrations was observed in the geochemical analysis of the trace elements in the thirty samples investigated. Trace element pollution in the investigated samples was assessed using the ...
... Lack of hygiene and biosecurity measures in poultry farms has influence on the emergence of pathogens and antimicrobial use. Antimicrobial residues in poultry meat and their excretion by poultry can exert a selective pressure and the occurrence of multidrug resistant bacteria in litter. The objective of this study was to investigate the relationship between antimicrobial use and antimicrobial resi ...
... The spread of pyrethroid resistance in malaria vectors is a major threat affecting the performance of current control measures. However, there is still not enough information on the resistance profile of mosquitoes to carbamates and organophosphates which could be used as alternatives. The present study assessed the resistance profile of Anopheles gambiae s.l. to bendiocarb and malathion, at the p ...
... An analysis of the structural effect of the mutations of the B.1.640.2 (IHU) Spike Receptor Binding Domain (RBD) and N-terminal Domain (NTD) is reported along with a comparison with the sister lineage B.1.640.1. and a selection of variants of concern. The effect of the mutations on the RBD–ACE2 interaction was also assessed. The structural analysis applied computational methods that are able to ca ...
Laura Craighead; Bhagyalakshmi Chengat Prakashbabu; Imadidden Musallam; Andrée Prisca Ndour; Amah Akpemdo Paul‐Henri Siméon Ayih‐Akakpo; Müller Fotsac Dzousse; Cha‐Ah Crystella Ngong; Jean Marc Kameni Feussom; Damitoti Yempabou; Mohamed‐Moctar Mouiche‐Mouliom; Adama Doumbia; Adama Fane; Elisabeth Dembele; Germaine L Minoungou; Arnaud S. R. Tapsoba; Sanogo Moussa; Pindemnewe Pato; Magnoudewa Pali; El‐Hadj Ba; Rianatou Bada Alambédji; Justin Ayih‐Akakpo; Javier Guitian; Barbara Häsler
... Brucellosis is regarded as one of the highest burden zoonotic diseases to persist in many regions globally. While sustained vaccination against B. abortus in an endemic setting can markedly reduce the prevalence of large ruminant and human brucellosis and benefit local livelihoods, the implementation of effective and sustainable control programmes has often failed in the worst affected areas. In a ...
Aleyrodidae; cassava; diagnostic techniques; food security; information storage; national surveys; plant protection; Cameroon
Abstract:
... Cassava plays a key role in the food security and economy of Cameroon, but its production is constrained by cassava mosaic disease (CMD). However, comprehensive surveys of CMD in Cameroon have been lacking. This study aimed at evaluating the current status of CMD and its whitefly vector. Field surveys were conducted in 2020 using a sampling, diagnostics and data storage protocol that has been harm ...
COVID-19 infection; World Health Organization; cholera; cross-sectional studies; herd immunity; littoral zone; misinformation; mortality; people; public health; vaccination; vaccines; Cameroon
Abstract:
... Since 1971, Cameroon has been facing an ever-growing series of cholera epidemics; despite all the efforts made by the government to address this substantial public health problem. In 2020, in addition to the COVID-19 pandemic, Cameroon recorded a high cholera case fatality rate of 5.3% following epidemics noted in the South, Littoral, and South-West regions which is far higher than the 1% World He ...
... The focus of this study was to isolate, evaluate and characterize endophytic actinobacteria from cocoyam roots collected in the localities around Mount Cameroon for their potential antagonistic activities against Pythium myriotylum (the major pathogen that limits growth and productivity of this crop in Cameroon) and their ability to promote plant growth. A total of 171 actinobacteria were isolated ...
... Lom River basin, associated with outflow from the Lom River system, is located in the East Region of Cameroon. The geology of the basin comprises Precambrian crystalline and crystallophyllian rocks, which are characterized by their compact nature and their low capacity to hold water. Permeable horizons observed in these rocks have developed through fracturing and weathering processes. Direct curre ...
... Sorghum and pearl millet are grain crops that can grow in semi-arid climates, with nutritional and bioactive properties superior to those of major cereals such as rice, wheat, and maize. However, these properties vary a lot, depending on the genetic factors, growing conditions, and place of cultivation. Four sorghum and two pearl millet grains cultivars grown in the Far-North region of Cameroon we ...
Laura E. Boeschoten; Ute Sass-Klaassen; Mart Vlam; Rob N.J. Comans; Gerwin F. Koopmans; Barbara Rocha Venâncio Meyer-Sand; Steve N. Tassiamba; Martin T. Tchamba; Herman T. Zanguim; Pascaline T. Zemtsa; Pieter A. Zuidema
... Forensic methods to independently trace timber origin are essential to combat illegal timber trade. Tracing product origin by analysing their multi-element composition has been successfully applied in several commodities, but its potential for timber is not yet known. To evaluate this potential the drivers of wood multi-elemental composition need to be studied. Here we report on the first study re ...
... This study was conducted on Manoka Island (Littoral Region of Cameroon) with the aim of analyzing climate change vulnerability and local adaptation strategies based on the local community’s perceptions and biophysical evidence. We used household surveys, focus group discussions, field observation, GIS, and remote sensing to collect data on variables of exposure, sensitivity, and adaptive capacity. ...
Santalales; Theobroma cacao; agriculture; capital; chi-square distribution; climate; education; farm management; farm size; farmers; food research; gender; industry; issues and policy; labor; population growth; prediction; yields; Cameroon; Western Africa
Abstract:
... In the last decade, the global demand for cocoa beans and its bi-products has risen three times faster than population growth, and a 20% growth prediction by industry forecasts over the next decade. This increase in global demand shows that the cocoa production sector remains pivotal in the policy and research agenda of major cocoa-producing countries in West Africa. In this study, we assessed the ...
community forestry; females; forest management; governance; issues and policy; peasantry; Cameroon; Nepal
Abstract:
... Community forestry (CF) signaled the institution of governance mechanisms for forest management and community livelihoods. Till date, there is still a strong debate on the outcomes linked to CF governance. Scholars agree on the need for shared-learning in advancing CF in the Global South. We contribute here, by comparatively reviewing CF governance processes and outcomes for two regional pacesette ...
case studies; community development; community forestry; focus groups; forest policy; income; ownership; trade; Cameroon
Abstract:
... Community forest enterprises (CFEs) trade to meet the economic, social, and environmental challenges of their community, just as Social Enterprises (SE) do. The question is if CFEs also could and should be understood in terms of SEs. To explore this question, this study determines the extent to which CFEs can be classified as SEs, using CFEs in Cameroon as a case study. Based on the three-dimensio ...
business enterprises; community forestry; governance; Cameroon
Abstract:
... Community forestry (CF) was set-up in Cameroon about 20 years ago to enable better environmental, economic, and social benefits for communities. Since then, 430 community forests have been attributed, covering an area of almost 1.7M ha. However, less than a quarter (10%) are in active management or enterprise. Weak institutions have been widely cited as a leading cause of poor performance in the c ...
... There are several species of seeds in the cucurbit family. This study was carried out to determine the effects of species seeds on bioactive compounds and the physicochemical and functional properties of five cucurbit flours. In this vein, dry samples of cucurbit species seeds were dehulled and ground into flour. Their proximate composition, bioactive compounds, antioxidants, and physical properti ...
... Geostatistics and machine learning have been extensively applied for modelling and predicting the spatial distribution of continuous soil variables. In addition to providing predictions, both techniques quantify the uncertainty associated with the predictions, although geostatistics is more developed in this respect. Despite the increased use of these techniques, most algorithms ignore that the so ...
Emily Nix; Emmanuel Betang; Miranda Baame; Michael Abbott; Serena Saligari; Matthew Shupler; Iva Čukić; Elisa Puzzolo; Daniel Pope; Bertrand Mbatchou; Rachel Anderson de Cuevas
... Access to clean energy for cooking is central to achieving Sustainable Development Goal 7. Latest predictions suggest that this goal will not be met by 2030, with further setbacks due to the COVID-19 pandemic. We investigated the impacts of COVID-19 restrictions on household cooking fuel, practices and dietary behaviours in a peri-urban community in Central Cameroon. Using surveys (n = 333) and qu ...
... Soil phototrophic microbes play key roles in many ecosystem functions, including nutrient cycling, water absorption and retention, substrate weathering and soil stabilization, as well as colonization and persistence of other organisms. Knowledge about the diversity and biomass of soil phototrophs remains limited, especially in tropical forests and savannas. Here, we investigate changes in the dive ...
... The increasing demands on lateritic gravels in road construction presently make it necessary to quantify the available resources that can be used in road construction. This study aims to estimate the tonnage and to valorize the lateritic gravels of the north flank of Mount Bangou (west Cameroon) in road construction. Interpretation of 48 vertical electrical soundings coupled with 20 pedological we ...
algebraic models; groundwater; water supply; watersheds; Cameroon; Central African Republic; Nigeria
Abstract:
... The study area is located between longitudes 11–16° E and latitudes 6–8° N in the heart of Central Africa. The Adamawa Plateau is a junction watershed for Cameroon and its neighboring countries. It plays an important hydrogeological role at an international level as it hosts transboundary aquifers extending from the Federal Republic of Nigeria to the Central African Republic on a total area of 670 ...
... The study area is located in the town of Dschang, West-Cameroon, on the southern flank of the Bambouto Mountains. The acute shortage of drinking water supply points due to lack of structural knowledge on existing aquifers. The present work allows the establishment of a hydrogeological map of the study area. The data from the vertical electrical soundings carried out on 64 points, show 12 electrica ...
... Boswellia dalzielii Hutch. is a valuable West African native frankincense tree species. The stem bark has a high traditional medicinal value throughout its range. The resin has great economic potential even though it is little exploited in West Africa, making it one of the neglected and underutilized species. Current anthropogenic pressure on natural habitats coupled with climate change are seriou ...
... Although the bushmeat trade is a significant component of the Anthropocene crisis in the tropics, the reliability of species-level identification is generally lacking from bushmeat surveys. We conducted a comprehensive study of 23 bushmeat markets in Cameroon and one seizure from a French airport using a multi-gene DNA-typing approach and a dedicated species-assignment pipeline (DNABUSHMEAT). We i ...
... Obtaining and analysing sound data can be a tedious and lengthy process. We present sound data consisting of 20,485 1 min sound recordings obtained in three sites within a rainforest landscape in southeast Cameroon. The sites differ in anthropogenic disturbance. We also present meta data corresponding to these recordings with the identification of all animal vocalisations in each 1 min sound recor ...
... The locality of Logbadjeck, located in the littoral region of Cameroon, has been investigated using the vertical electrical soundings with a Schlumberger configuration. Eighty vertical electric soundings have been carried out along fourteen profiles oriented in the southwest-northeast direction. The lateral and vertical variations of resistivity in the area were mapping and made it possible to inf ...
Dély Carlos Temfack Deloko; Nchongboh Gilbert Chofong; Innocent Mbulli Ali; Ibrahim Gentil Kachiwouo; Fabrice Ouboum Songolo; Albert Roger Nkang Manock; Michel Kamgaing; Théophile Fonkou; Achiangia Patrick Njukeng
... The Cucumber mosaic virus (CMV) is of major concern to large and small-scale growers of tomato and pepper in the Western region of Cameroon. It causes loss in quantity and quality of produce. Here, we described the detection of CMV and symptomatology in infected tomato and pepper grown in the Western region of Cameroon using a serological method. To detect CMV, 180 leaves of each species were test ...
diet recall; education; energy intake; nationalities and ethnic groups; obesity; portion size; regression analysis; urbanization; Cameroon
Abstract:
... Central Africa is experiencing rapid urbanisation, and this situation comes along with changes in food habits and an increased prevalence of obesity and associated health risks. Factors influencing dietary intake among the diverse African populations are not well understood. Our objective was to characterise the dietary intake and their determinants in the two main ethnic groups experiencing nutri ...
Achille Jerome Binyang; Emmanuel Elanga-Ndille; Billy Tene-Fossog; Cyrille Ndo; Lynda Nouage; Tatiane Assatse; Yvan Fotso-Toguem; Raymond Tabue; Francis Zeukeng; Daniel Nguete Nguiffo; Josiane Etang; Flobert Njiokou; Charles S. Wondji
... BACKGROUND: Cameroon is considering the implementation of indoor residual spraying (IRS) as a complementary measure to control malaria in the context of high pyrethroid resistance in major malaria vectors. Non-pyrethroid insecticide classes such as organophosphates and carbamates may be utilized in IRS due to widespread pyrethroid resistance. However, the success of this strategy depends on good k ...
... This study investigated the spatial distribution of trace metals (Fe, Mn, Ni, Cr, Co, Sc and V) and radionuclides (Th and U) contamination in surface and bottom sediments from the Nyong estuary, Cameroon southern Atlantic coast, to provide informations on the pollution status of these sediments and the possible sources of pollutants. Salinity were measured in situ in interstitial water and dried s ...
Pilate N. Kwi; Elvis E. Ewane; Marcel N. Moyeh; Livinus N. Tangi; Vincent N. Ntui; Francis Zeukeng; Denis D. Sofeu-Feugaing; Eric A. Achidi; Fidelis Cho-Ngwa; Alfred Amambua-Ngwa; Jude D. Bigoga; Tobias O. Apinjoh
... BACKGROUND: Malaria remains endemic in Cameroon, with heterogeneous transmission related to eco-climatic variations, vector diversity and spatial distribution. The intensification of malaria prevention and control through the free distribution of insecticide-treated nets in recent years may have altered the composition, geographic distribution and natural infection rate of Anopheles species, with ...
... At the start of the UN Decade of Ecosystem Restoration (2021–2030), the restoration of degraded ecosystems is more than ever a global priority. Tree planting will make up a large share of the ambitious restoration commitments made by countries around the world, but careful planning is needed to select species and seed sources that are suitably adapted to present and future restoration site conditi ...
... We characterised the hoverfly (Diptera: Syrphidae) community on ground cover vegetation in the market garden of Meskine (Far‐North region of Cameroon). Hoverflies were collected by hand‐netting from flowers of ground cover vegetation in 20 grass strips from March to June in two consecutive years (2017–2018). In total, 15 hoverfly species were collected of which eight were new to Cameroon (subfamil ...