East Africa Research Articles

A new species of freshwater crab from the East Usambara Mountains of Tanzania, East Africa, with a redescription of Telphusa infravallata Hilgendorf, 1898 (Brachyura: Potamoidea: Potamonautidae).

This work describes a new species of freshwater crab from the East Usambara Mountains of Tanzania from previously unidentified museum material. A second species from these mountains, T. infravallata Hilgendorf, 1898, is redescribed based on reexamination of the type material, and its gonopods and mandible are illustrated for the first time. Diagnoses, illustrations, and a distribution map are provided for these species.

Productivity effects of agroecological practices in Africa: insights from a systematic review and meta-analysis

Abstract Scholars have proposed agroecology as a promising method for promoting sustainable and socially just agricultural production systems. However, the extent to which agroecological practices will generate the yields required to ensure sufficient food globally remains unclear. This notion is particularly true in the context of Africa, where agricultural productivity is low but levels of hunger and malnutrition are high. To address this knowledge gap, this article undertakes a systematic review of empirical studies to assess the overall status of agroecology-related research in Africa. Using descriptive and meta-analytical methods, we evaluate empirical evidence on the effect of agroecological practices on land and labour productivity. Our analysis of 501 peer-reviewed articles reveals that the body of agroecology-related literature in Africa has been growing in the past 10 years from approximately 10 to more than 70 studies per annum before and after 2014, respectively, with a strong focus on East Africa, particularly Kenya. The majority of the reviewed studies relate to but do not mention agroecology in the title or abstract. Thus, solely relying on studies that use the term may introduce bias and overlook valuable research contributions to the field. The meta-analysis could identify 39 agronomic studies with 392 observations in which agroecological practices were compared to monocrop systems (defined as plots where similar plants grow alongside each other simultaneously and sequentially from one season to the next) with or without inputs as the control groups. The meta-analysis indicates that agroecological practices are associated with a positive and significant difference in land productivity, compared to that for monocrop systems especially so when monocrops are grown without inputs. However, the size and direction of yield differs by practice, crop, climatic factor, soil property and type of control.

Climate change perceptions, expectations, observations, and projections at Lake Victoria

Abstract Understanding people's perceptions of climate change and associated environmental risks is paramount in assessing how individuals respond to climate change. Awareness of the consequences of climate change determines the present and future behaviours and expectations, as well as the actions taken to mitigate the likely impacts. We surveyed the perceived and expected climate change consequences of experts and community members in the Lake Victoria basin in East Africa, compared them with hydro-meteorological observations and projections, and established that some perceived trends, such as increasing temperature or rainfall intensity, correspond with meteorological observations.
However, the perceived increase in drought occurrence (believed to be a recent consequence), was not substantiated by the meteorological data. It was only in the northwestern region that drought frequency increased since the year 2000, while the rest of the basin did not experience such a trend. Community members were concerned about the already noticeable consequences of climate change on their livelihoods through agriculture or fishing, while experts were mainly focused on the amplification of hazards such as floods and droughts. This divergence may imply that experts underestimate the consequences that society is already facing. Nevertheless, both groups agree that climate change will undoubtedly lead to the deterioration of human well-being by affecting food security, increasing poverty, and increasing the incidence of disease.
This is a serious concern that requires immediate attention. Such insights into people's climate change perceptions can help policy-makers, researchers, and community members to better tailor adaptation solutions acceptable to the local context. Effective governance is essential to enable people to adapt to climate change and other challenges, including those resulting from the impacts of globalisation, demographic trends, and the degradation and scarcity of resources.

Origins of Extreme CAPE Around the World

AbstractSevere convection, responsible for hazards such as tornadoes, flash floods, and hail, is usually preceded by abundant convective available potential energy (CAPE). In this work, we use a Lagrangian approach to study the buildup of anomalously large values of CAPE from 2012 to 2013 in various regions. Nearly all extreme values of CAPE arise from surface fluxes underneath a layer of convective inhibition (the CIN layer) over several diurnal cycles, but the origin of the CIN layer and the diurnal cycle of surface fluxes differ around the world. In some regions, such as North America and Europe, the air above the boundary layer must be much warmer than usual to form this CIN layer, whereas in other regions, especially the Middle East and central Africa, a CIN layer is common. Additionally, high CAPE occurrences that are over land (those in the Americas, Europe, Africa, and Southeast Asia) tend to lose their CIN layers before the time of maximum CAPE due to large diurnal cycles of sensible heating, whereas those that occur over coastal waters (in the Middle East, Northern Australia, South Asia, and the Mediterranean) usually retain substantial convective inhibition. Uniquely, CAPE in Southeast Australia often builds up due to cooling aloft rather than to boundary layer warming. These results show that one hoping to understand or predict CAPE patterns must understand a variety of mechanisms acting in different regions.

Characteristics of longitudinal maternal health studies in sub-Saharan Africa: A systematic mapping of literature between 2012 and 2022.

High maternal mortality rates in sub-Saharan Africa necessitate the need for aligned research focusing on prevalent causes and neglected conditions in the region. This mapping review aimed to describe the characteristics of longitudinal maternal health studies between 2012 and 2022 in sub-Saharan Africa and identify gaps in priority conditions or geographical locations. We identified references through a Medline (PubMed) search covering September 2012 to June 2022. We included prospective cohort or clinical trials that enrolled at least 1000 pregnant women, with a study site in sub-Saharan Africa, and published in English or French. Screening and data extraction were done in duplicate using EPPI-reviewer software. Descriptive analysis was used to summarize the results, identifying patterns in studies across time, country, study design, topics, and funders. We identified 213 eligible studies, which were covered in 534 publications. We identified studies in 33 of the 48 sub-Saharan African countries, with the majority in east and southern Africa. The predominant study topics were HIV (36.4%), nutrition (20%), and malaria (16.3%), with very few publications on hypertensive disorders of pregnancy (6.4%), ante/postpartum hemorrhage (3.7%), and sexually transmitted infections (3.2%). More studies were cohorts (115/213; 54%) than clinical trials. The National Institutes of Health (31.5%), Bill and Melinda Gates Foundation (22.1%), and USAID (10.8%) were the largest research funders. Identifying research trends and mismatches between research topics and disease burden provides useful information for guiding future research prioritization. In particular, gaps exist for studies on hypertensive disorders of pregnancy and ante/postpartum hemorrhage, among the top causes of maternal mortality in sub-Saharan Africa.

Bridging the Knowledge Divide: Journalism Education and Industry Needs in East and Southern Africa

This study explores the perceived gap between journalism education and professional practice in Tanzania and Zambia. Through interviews with educators and journalists and an analysis of 12 journalism curricula, the findings reveal that both educators and journalists acknowledged a gap, with a shared desire for improved alignment between academic programs and industry needs. Educators expressed a commitment to incorporating contemporary content, but face challenges like limited industry collaboration and resource constraints. Journalists, however, observed a hesitancy among educators in implementing recommendations from the industry. Both groups see the need for integrating theory and practice into the curricula.

Global–Local Dynamics and Transformative Approaches in Climate Change Reporting in MENA: Insights from Tunisian Journalists

ABSTRACT In Tunisia, like other countries in the Middle East and North Africa (MENA) region, climate change (CC) is increasingly prompting a re-evaluation of journalism’s traditional gatekeeping role in favour of transformative, community-oriented approaches that promote climate justice, and foster greater awareness and engagement. This study qualitatively explores the perceptions and knowledge of Tunisian journalists (N = 7) covering CC, within a context of governmental uncertainty and dependence on international non-governmental organisations. Thematic analysis revealed three themes. First, the global–local nexus in CC reporting highlights the interconnectedness of global and local perspectives, revealing how transnational and global issues are contextualised within local frameworks. Second, the theme of solutions-oriented journalism in CC reporting emphasises a shift towards transformative storytelling, focusing on solutions rather than merely reporting problems. Finally, the theme of determinants of attention shaping CC reporting explores the various determinants of attention—such as circulation of disinformation, climate justice claims and youth activism—that dictate the reporting choices, approaches and level of attention CC receives in media coverage. The study calls for addressing these challenges and enhancing CC reporting practices. Further research using diverse methods is needed to explore how journalists frame CC across different contexts.

The extended recovery ring-stage survival assay is a scalable alternative for artemisinin susceptibility phenotyping of fresh Plasmodium falciparum isolates.

Artemisinin partial resistance (ART-R) has emerged in eastern Africa, necessitating regular surveillance of susceptibility of Plasmodium falciparum to artemisinins. The microscopy-based ring-stage survival assay (RSA) provides a laboratory correlate of ART-R but is limited by low throughput and subjectivity of microscopic counts of viable parasites. The extended recovery ring-stage survival assay (eRRSA) replaces microscopy with efficient quantitative PCR (qPCR) readouts but has been studied only with culture-adapted P. falciparum clones. We measured susceptibility to dihydroartemisinin (DHA) after a 6-h incubation with 700-nM DHA, followed by culture without drug, by comparing survival with that of untreated controls by microscopy (the RSA) or qPCR (the eRRSA) and also performed standard growth inhibition (half-maximal inhibitory concentration [IC50]) assays for 122 P. falciparum isolates freshly collected in eastern and northern Uganda from March to July 2022. The median values for RSA survival, eRRSA fold change, and DHA IC50 were 3.0%, 46.2, and 3.2 nM, respectively. RSA percent survival and eRRSA fold changes correlated strongly (Spearman correlation coefficient [rs] = -0.7411, P < 0.0001), with modest associations between the presence of validated P. falciparum Kelch13 ART-R mutations (C469Y or A675V) and RSA (median survival 2.6% for wild type [WT] vs 4.1% for mutant, P = 0.01), or eRRSA (median fold change 63.4 for WT vs 30.9 for mutant, P = 0.003) results. Significant correlations were also observed between DHA IC50 values and both RSA percent survival (rs = 0.4235, P < 0.0001) and eRRSA fold changes (rs = -0.4116, P < 0.0001). The eRRSA is a scalable alternative for phenotyping fresh P. falciparum isolates, providing similar results with improved throughput.

Examining Factors Contributing to the Entrenchment and Collapse of Authoritarianism Through the Lens of the Arab Spring

Abstract: This paper hopes to examine the reasons contributing to the failure of the Arab Spring to culminate in a lasting change in political reform and democratisation. The article utilises frameworks by previous authors to explain the phenomenon of the short-lived democracies in the Middle East and North Africa (MENA) as well as provide additional insights of the author in obtaining a comprehensive understanding of the reason why autocratic states are so entrenched within MENA. At the end of this, the aim is to provide political substantiations regarding the failure of the Arab Spring, as opposed to the current focus surrounding violence and civil war as the driver to stunted democratic growth and autocratic resurgence. The article concludes that MENA countries are uniquely situated by their social, political and economic institutions and history that make democratic growth difficult unless as a means to achieve another priority, such as economic prosperity. This can be extrapolated towards analysing the behaviours of a variety of other states, democratic or autocratic, in their interactions with their population and foreign states.

Khajur (Phoenix dactylifera L.): Medicinal importance in perspective of Unani medicine and pharmacological studies

The date palm (Phoenix dactylifera L.) is recognized as one of humanity's earliest cultivated plants, having served as a food source for over 6000 years. It holds a prominent status as the most favoured fruit in the Middle East and North Africa. Date fruit has a long history of consumption and traditional medicinal use. Whether eaten fresh or dried, dates offer a rich source of energy due to their exceptional nutritional content and extended shelf life. They provide an economical means of obtaining essential nutrients including carbohydrates, proteins, vitamins, minerals and dietary fibers. Furthermore, date fruit exhibits a diverse range of pharmacological effects including antimicrobial, anti-inflammatory, anti-diabetic, anticancer, antihyperlipidemic and many more. It is also beneficial in disorders of paralysis, sexual debility, fever etc. Date palm fruits offer a natural and safe alternative or complement to synthetic drugs in managing numerous health conditions. Keywords: Dates, Phoenix dactylifera, Arecaceae/Palmae, Khajur, Unani Medicine.

What Explains Iran’s Low Female Labor Force Participation?

That women’s labor force participation in the Islamic Republic of Iran has been consistently low is well known, but explanations vary as to the principal causes. Moreover, many studies examine the female economically active population in aggregate, without sociodemographic distinctions. The puzzle is why women remain under-represented in Iran’s labor force despite high educational attainment, later marriage, smaller family size, and the country’s economic difficulties. Drawing on household surveys by the Statistical Center of Iran, we put the spotlight on the waged and salaried employment patterns of urban married women, who dominate the female labor force, and we compare patterns in two time periods: the economic growth period of 2005–2007 and the economic crisis period of 2017–2020. In examining the structural and institutional factors that explain women’s high unemployment and their tendency to drop out of the labor force following marriage and childbirth, we elucidate the roles of sanctions, economic cycles, declining government recruitment, discriminatory laws, and gendered wage gaps. We also highlight similarities and differences between Iran and other countries in the Middle East and North Africa.

Towards black methods in research with refugees

Abstract Critical approaches to forced displacement and migration studies gesture towards methodologies and theoretical orientations that are contextualized within the complex socialities of refuge lifeworlds and ways of being. This article offers methodological approaches that account for the forces of displacement as well as the layered and textured experiences of forcibly displaced people. Turning to black studies and black feminist thought, the article examines how forcibly displaced people navigate and contest resettlement processes in the USA. Thinking with empirical material from a research study engaging with forcibly displaced interlocutors from East and Central Africa and refugee resettlement personnel, the article illuminates critical methods of interpreting the experiences of refugees and forms of resettlement through the lenses of black studies and black feminist thought.

Correlation of aerosol particles with clouds and radiation budget over the horn of Africa–Ethiopia using MODIS satellite data: Part 02

The aerosol particles are positively associated with the cloud parameters, precipitation and radiation budgets. The correlations of the aerosols-clouds-precipitations interaction ACPI are uncertain, that show large spatiotemporal variability in their magnitude. For this study, the aerosol particles and clouds data were retrieved from the Moderate Resolution Imaging Spectroradiometer MODIS sensors. These comprized of aerosol optical depth AOD, Ångström exponential AET, atmospheric water vapor AWV, mean cloud fraction CFM, cloud top pressure CTP and cloud top temperature CTT. The precipitation PPT data is comprized of 3B43 monthly products sourced from Tropical Rainfall Measuring Mission TRMM and the outgoing long-wave radiation OLR flux is comprized of Clouds and the Earth‘s Radiant Energy System CERES satellite instruments.The study covers sixteen sites in East Africa–Ethiopia with neighboring Eritrea, Djibouti, and South Sudan countries clustered into four regions for the periods 2001–2022 to provide detailed information on the aerosol particles spatiotemporal correlations on clouds and precipitation. The increase–decrease AET, AWV, CFM and PPT fluctuations are with AOD opposing OLR, CTP and CTT. The spatial correlations are oriented towards western part mostly in southwest of the study area regions. The clustered regions show minima radiative forcing in 2012 at the southwest cluster for all surface radiative forcing FSurf and at the southeast cluster for top of the atmosphere radiative forcing FTOA, with their maxima at the northwest cluster in 2022 for FSurf and in 2010 for FTOA from both instruments. Accordingly, the minimum values are −23.83 Wm−2 and 8.37 Wm−2 for Terra and −22.95 Wm−2 and 7.68 Wm−2 for Aqua, and the maxima are −0.58 Wm−2 and 63.80 Wm−2 for Terra −1.37 Wm−2 and 58.83 Wm−2 for Aqua, respectively. Here, the values for all of the parameters we observed in the Terra satellite are mostly greater than those of the Aqua satellite. The values for the parameters were higher in the southern clusters, specifically in the southwest clusters, than in the northern clusters.The mean cloud fraction CFM was less dominant, while AET was the most dominant variable with 0.02733< slop value β1<15.17547 in the regression analysis. The study area regions showed the best performance R values, with 0.93941 < R < 0.99958 for all the seasons. The minimum values observed in Bega at Kombolcha are from Aqua for both β1 and R, while their maximums are from Terra in Kiremt at Bahir Dar for the dominance and in Tseday at Agnuak for the performance we described.

Phylogenetic placement of Mt Bamboutos endemic skink, Trachylepis mekuana (Chirio and Ineich, 2001)

African skinks of the genus Trachylepis is one of the most diverse genera of lizards in Africa. Although, many species have not been validated phylogenetically in recent years. In this study we evaluate the phylogenetic status of the Cameroon Volcanic Line endemic montane skink, Trachylepis mekuana. We recover this species as part of the larger Trachylepis varia group, with sister relationship to the morphological similar skinks from Eastern Africa Trachylepis megalura and central Africa Trachylepis raymondlaurenti. Low sequence divergence (&lt;1.6% 16S) have been observed among the three species. Based on some morphological and colouration differences, as well as mostly allopatric distribution we regard them as good species.

Not Indian, Not African: Classifying the East African Asian Population in Aotearoa New Zealand

This paper explores the challenges of measuring and classifying the East African Asian population in Aotearoa New Zealand. As a particularly diverse country, New Zealand has a significant and varied population of immigrants from South Asia, including India, Pakistan and Bangladesh, along with immigrants of South Asian origin, from Fiji, Southeast Asia, the Caribbean and East Africa. New Zealand’s system of ethnic classification relies on self-identification, with a broad definition of ethnicity encompassing heritage, ancestry, culture, language and feelings of belonging. However, the collection of this information at a granularity that enables detailed analysis is constrained for the South Asian population, regardless of origin or identification. People are typically presented with the choice of selecting “Indian” ethnicity as a tick box, or providing ethnicities under “Other” as write-in descriptors, which in turn are coded to a limited set of categories within the classification being used. This practice potentially conceals a diversity of ethnicities, which can only partially be hinted at by responses to questions relating to religions, languages and birthplaces, especially for second or third-generation descendants of migrants. Ethnic classification at the highest level, moreover, includes East African Indians as Asian, rather than African, reflecting diasporic heritage as a shorthand for ancestry and overlooking the relevance of layers of identity associated with the double diaspora. Drawing on Peter J. Aspinall’s work on collective terminology in ethnic data collection and categorizing the “Asian” ethnic group in the UK, this paper looks at the overlaps and disconnects between heritage, ethnicity and national belonging in classifying less clearcut identities. We explore the strengths and limitations of New Zealand’s self-identification approach to ethnic identity, and query what exactly is being asked of groups on the margins: when self-identification does not match external perception, are we looking for geographic, cultural, or genetic origins? A focus on the East African Asian population in Aotearoa highlights the complexity of identity for diasporic groups with distant ancestral links with India, as lived experience of cultural connection extends far beyond the bounds of ethnicity, language and even ancestry.

Epidemiologic and genomic characterization of an outbreak of Rift Valley fever among humans and dairy cattle in northern Tanzania.

A peri-urban outbreak of Rift Valley fever virus (RVFV) among dairy cattle from May through August 2018 in northern Tanzania was detected through testing samples from prospective livestock abortion surveillance. We sought to identify concurrent human infections, their phylogeny, and epidemiologic characteristics in a cohort of febrile patients enrolled from 2016-2019 at hospitals serving the epizootic area. From September 2016 through May 2019, we conducted a prospective cohort study that enrolled febrile patients hospitalized at two hospitals in Moshi, Tanzania. Archived serum, plasma, or whole blood samples were retrospectively tested for RVFV by PCR. Human samples positive for RVFV were sequenced and compared to RVFV sequences obtained from cattle through a prospective livestock abortion study. Phylogenetic analysis was performed on complete RVFV genomes. Among 656 human participants, we detected RVFV RNA in four (0.6%), including one death with hepatic necrosis and other end-organ damage at autopsy. Humans infected with RVFV were enrolled from June through August 2018, and all resided in or near urban areas. Phylogenetic analysis of human and cattle RVFV sequences demonstrated that most clustered to lineage B, a lineage previously described in East Africa. A lineage E strain clustering with lineages in Angola was also identified in cattle. We provide evidence that an apparently small RVFV outbreak among dairy cattle in northern Tanzania was associated with concurrent severe and fatal infections among humans. Our findings highlight the unidentified scale and diversity of inter-epizootic RVFV transmission, including near and within an urban area.

The economic, social, and environmental impact of ecologically centered integrated pest management practices in East Africa

Agricultural pest management faces mounting challenges with increasing pressure to reduce chemical pesticide use while ensuring food security, and environmental sustainability. Ecologically centered approaches, such as integrated pest management (IPM), offer promising sustainable agroecological crop protection alternative solutions to pesticides. This study assesses the investment viability and environmental sustainability of two IPM interventions—mango fruit fly IPM (FF-IPM) and push-pull technology (PPT) in Kenya and Uganda, using project investment and adoption data from 2007 to 2021. The study also evaluates these technologies contribution to food security and poverty reduction. FF-IPM integrates biological control, cultural practices, and targeted bait traps to manage fruit flies in mango production, while PPT employs Desmodium and Brachiaria grass to control stemborers and striga weed. The findings highlight that these IPM interventions achieved a combined net present value of $500 million, with a benefit-cost ratio of about 8:1, and an internal rate of return of 21%, comparable to returns from improved crop varieties. These technologies also improved food security for 641,000 people, lifted 445,349 people above the poverty line, representing 2% of the poor population in both countries, and generated an average income increase of $5 per capita in Kenya and Uganda annually. Environmentally, they sequestered 2.7 million tons of CO2 equivalent, valued at $12.2 million, and are reducing pesticide use by 86,000 to 204,000 L per year. These results demonstrate the potential of IPM approaches to simultaneously enhance livelihoods, local economies, and generate global environmental public goods, suggesting that addressing adoption barriers could further amplify these positive outcomes.

Renewable energy, carbon footprints, natural resources depletion and economic growth in Africa

Purpose This study aims to examine the interplay between renewable energy consumption, carbon footprints, natural resources depletion and economic growth. Design/methodology/approach It engaged 45 African countries using the generalized method of moments (GMM) approach. Data from the World Development Indicators for the period 2000–2023 are used to analyse the relationships among these variables. Findings The result indicates a positive and significant effect of greenhouse gas emissions on economic growth in all regions of Africa, except for Southern Africa. Regarding the depletion of natural resources, the authors observe a dominant negative effect on economic growth. Thus, an increase in the depletion of natural resources contributes to the reduction of economic growth in most regions of Africa, notably West Africa, East Africa and sub-Saharan Africa as a whole. Moreover, the depletion of natural resources can also have negative social impacts, such as conflicts over access to remaining resources, which can indirectly influence economic stability and growth. Originality/value This study contributes to the existing literature by providing empirical evidence of the positive effects of renewable energy consumption on carbon footprints, natural resource depletion and economic growth. By quantifying these relationships, the study offers valuable insights into the potential of renewable energy to address pressing environmental and economic challenges.

An Examination of Ethiopian Data on the Coffee Value Chain from a Systemic Perspective

Ethiopia&amp;apos;s principal export crop is coffee. Currently, one of the most profitable exports for nations in East Africa, including Ethiopia, Uganda, Kenya, and Tanzania, is coffee. Ethiopia is recognized as the source and major hub of Arabica coffee varietal. Global coffee production is insignificant, with over 70 nations and approximately 25 million growers producing coffee. Seventeen percent of coffee producers worldwide are from Ethiopia. Ethiopia, which produces 4.46 percent of the world&amp;apos;s coffee, is the world&amp;apos;s fifth-largest producer, behind only Brazil, Vietnam, Colombia, and Indonesia. the biggest and most prolific grower in Africa, making up around 43.15% of the continent. Ethiopian coffee varieties vary greatly in terms of genetic variety. The nation has also captured the attention of the world because of its inherent. More than 60% of the world&amp;apos;s coffee is produced by the top three countries—Brazil, Vietnam, and Colombia together. Ethiopia is the eighth-largest supplier of coffee to the world market, accounting for 3–3.7 percent. Sixty countries import coffee from Ethiopia. The top 10 countries to import Ethiopian coffee, in terms of value, were Italy, Germany, Saudi Arabia, Japan, Belgium, South Korea, China, the United Arab Emirates, and Taiwan. They make up 84% of the whole. Japan moved up from sixth place in 2020–2021 to fourth place in the world for coffee imports in 2021–2022.

Genotypic and phylogeographic insights into a pre-epidemic variant of Wesselsbron virus detected in sylvatic Aedes mcintoshi from Semuliki Forest, Uganda.

Wesselsbron virus (WSLV) is a neglected mosquito-borne virus within the yellow fever subgroup in the genus Orthoflavivirus of the Flaviviridae family. Despite being primarily a veterinary pathogen able to cause stillbirths, congenital malformations, and mortality in ruminants, WSLV also infects humans, causing a usually self-limiting febrile illness, or may lead to neurological complications in rare cases. WSLV causes sporadic outbreaks in Southern Africa, but findings in mosquitoes from other African countries suggest a wider distribution. Here, we report the detection and isolation of WSLV from an Aedes mcintoshi mosquito collected in a pristine ecosystem within Semuliki National Park, western Uganda. The detected strain M5937-UG-2018 was impaired in infectivity, replication, and production of infectious particles in cell lines derived from different hosts compared to an epidemic reference strain, SA H177. Full-genome sequencing by next-generation sequencing from the mosquito homogenate revealed a maximum nucleotide identity of 98.1% to a WSLV isolate from a human sample collected in South Africa in 1996. M5937-UG-2018 grouped in phylogenetic analyses with strains from South Africa and Senegal. Reconstruction of the temporal and spatial dispersal of WSLV across Africa estimated a likely origin of WSLV in South Africa in the early 19th century and spread in Southern Africa in the following decades. Long-distance movement toward Western and Eastern Africa was modeled to have occurred in the early 21st century. However, displacing the origin of M5937-UG-2018 did not decrease the likelihood of the model supporting the hypothesis that WSLV is widely distributed in Africa.IMPORTANCEWSLV is a neglected mosquito-borne virus causing teratogenicity in ruminants and febrile illness in humans. WSLV is mainly endemic to Southern Africa, but findings in other regions suggest a wider distribution on the continent. Knowledge of the distribution of WSLV is impaired as differential diagnostics are rarely performed in livestock and humans presenting with symptoms compatible with WSLV infection. Our work investigating viral infections in mosquitoes from a remote tropical rainforest region demonstrates that WSLV is endemic in Uganda. The isolated virus was less infective and showed lower replication ability in vitro compared to an epidemic isolate from South Africa. Phylogeographic reconstruction of spatial and temporal movements, along with the displacement of the origin of the newly detected strain, suggests that WSLV may be widely distributed across Africa. Our data show that the geographic distribution of WSLV and its impact on human and animal health are likely underestimated.