scholarly journals Intestinal Schistosomiasis and Giardiasis Co-Infection in Sub-Saharan Africa: Can a One Health Approach Improve Control of Each Waterborne Parasite Simultaneously?

2020 ◽  
Vol 5 (3) ◽  
pp. 137 ◽  
Author(s):  
John Archer ◽  
Lisa O’Halloran ◽  
Hajri Al-Shehri ◽  
Shannan Summers ◽  
Tapan Bhattacharyya ◽  
...  
Keyword(s):  
Disease Surveillance ◽  
Large Scale ◽  
One Health ◽  
Control Strategies ◽  
Integrated Control ◽  
Sub Saharan Africa ◽  
Middle Income ◽  
Intestinal Schistosomiasis ◽  
Sanitation And Hygiene ◽  
Sub Saharan

Both intestinal schistosomiasis and giardiasis are co-endemic throughout many areas of sub-Saharan Africa, significantly impacting the health of millions of children in endemic areas. While giardiasis is not considered a neglected tropical disease (NTD), intestinal schistosomiasis is formally grouped under the NTD umbrella and receives significant advocacy and financial support for large-scale control. Although there are differences in the epidemiology between these two diseases, there are also key similarities that might be exploited within potential integrated control strategies permitting tandem interventions. In this review, we highlight these similarities and discuss opportunities for integrated control of giardiasis in low and middle-income countries where intestinal schistosomiasis is co-endemic. By applying new, advanced methods of disease surveillance, and by improving the provision of water, sanitation and hygiene (WASH) initiatives, (co)infection with intestinal schistosomiasis and/or giardiasis could not only be more effectively controlled but also better understood. In this light, we appraise the suitability of a One Health approach targeting both intestinal schistosomiasis and giardiasis, for if adopted more broadly, transmission of both diseases could be reduced to gain improvements in health and wellbeing.

scholarly journals Intestinal Schistosomiasis and Giardiasis Co-Infection in Sub-Saharan Africa: Can a One Health Approach Improve Control of Each Waterborne Parasite Simultaneously?

2020 ◽  
Author(s):  
John Archer ◽  
Lisa O'Halloran ◽  
Hajri Al-Shehri ◽  
Shannan Summers ◽  
Tapan Bhattacharyya ◽  
...  
Keyword(s):  
Disease Surveillance ◽  
Large Scale ◽  
One Health ◽  
Sub Saharan Africa ◽  
Middle Income ◽  
Intestinal Schistosomiasis ◽  
Sub Saharan ◽  
The Many ◽  
And Control ◽  
Scale Control

Both intestinal schistosomiasis and giardiasis are co-endemic throughout many areas of sub-Saharan Africa, significantly impacting the health of millions of children within endemic areas. While giardiasis is not considered a neglected tropical disease, intestinal schistosomiasis is formally grouped within the NTD umbrella and, as such, receives significant advocacy and financial support for large-scale control, annually. Given the many epidemiological similarities between intestinal schistosomiasis and giardiasis, in this review, we critically discuss why disease surveillance and control activities for giardiasis are largely absent within low- and middle-income countries. With advances in new methods of parasite diagnostics and provision of existing anti-parasitic medications, better management of intestinal schistosomiasis and giardiasis co-infection could, not only be better understood but also, more effectively controlled. In this light, we appraise the suitability of a One Health approach for intestinal schistosomiasis, for if adopted more broadly, could also pave a way forward for more inclusive public health actions against giardiasis.

scholarly journals Research on Invasive Nontyphoidal Salmonella Disease and Developments Towards Better Understanding of Epidemiology, Management, and Control Strategies

2020 ◽  
Vol 71 (Supplement_2) ◽  
pp. S127-S129
Author(s):  
Samuel Kariuki ◽  
Ellis Owusu-Dabo
Keyword(s):  
Burden Of Illness ◽  
Control Strategies ◽  
Sub Saharan Africa ◽  
Disease Entity ◽  
Middle Income ◽  
Diagnostic Strategies ◽  
Disease Epidemiology ◽  
Middle Income Countries ◽  
Sub Saharan ◽  
And Control

Abstract During the 11th International Conference on Typhoid and Other Invasive Salmonelloses held in Hanoi, Vietnam, a number of papers were presented on the burden of disease, epidemiology, genomics, management, and control strategies for invasive nontyphoidal Salmonella (iNTS) disease, which is increasingly becoming an important public health threat in low- and middle-income countries, but especially in sub-Saharan Africa (sSA). Although there were minor variations in characteristics of iNTS in different settings (urban vs rural, country to country), it was observed that iNTS has gained greater recognition as a major disease entity in children younger than 5 years. Renewed efforts towards greater understanding of the burden of illness, detection and diagnostic strategies, and management and control of the disease in communities in sSA through the introduction of vaccines will be important.

scholarly journals Using mobile phone data to reveal risk flow networks underlying the HIV epidemic in Namibia

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Eugenio Valdano ◽  
Justin T. Okano ◽  
Vittoria Colizza ◽  
Honore K. Mitonga ◽  
Sally Blower
Keyword(s):  
Large Scale ◽  
Control Strategies ◽  
Sub Saharan Africa ◽  
Mobile Phone Data ◽  
Mathematical Framework ◽  
Sub Saharan ◽  
Administrative Units ◽  
Large Scale Networks ◽  
Living With Hiv ◽  
Very High

AbstractTwenty-six million people are living with HIV in sub-Saharan Africa; epidemics are widely dispersed, due to high levels of mobility. However, global elimination strategies do not consider mobility. We use Call Detail Records from 9 billion calls/texts to model mobility in Namibia; we quantify the epidemic-level impact by using a mathematical framework based on spatial networks. We find complex networks of risk flows dispersed risk countrywide: increasing the risk of acquiring HIV in some areas, decreasing it in others. Overall, 40% of risk was mobility-driven. Networks contained multiple risk hubs. All constituencies (administrative units) imported and exported risk, to varying degrees. A few exported very high levels of risk: their residents infected many residents of other constituencies. Notably, prevalence in the constituency exporting the most risk was below average. Large-scale networks of mobility-driven risk flows underlie generalized HIV epidemics in sub-Saharan Africa. In order to eliminate HIV, it is likely to become increasingly important to implement innovative control strategies that focus on disrupting risk flows.

scholarly journals Applying Transition Management for Improving Sustainability of WASH Services in Informal Settlements in Sub-Saharan Africa – An Exploration

2018 ◽  
Author(s):  
Giorgia Silvestri ◽  
Julia M. Wittmayer ◽  
Karlijn Schipper ◽  
Robinah Kulabako ◽  
Sampson Oduro-Kwarteng ◽  
...  
Keyword(s):  
Large Scale ◽  
Informal Settlements ◽  
Sub Saharan Africa ◽  
Management Approach ◽  
Management Process ◽  
Sustainability Transitions ◽  
Transition Management ◽  
Societal Challenges ◽  
Sanitation And Hygiene ◽  
Sub Saharan

The unsustainability of the services related to water, sanitation and hygiene in informal settlements in Sub-Saharan Africa services is deeply embedded in current societal and governance structures, cultures and practices; it is context-dependent and involves numerous actors with different interests. The field of sustainability transitions research addresses such persistent and large scale societal challenges, with transition management being one of its widely applied governance approach. By drawing on an analysis of the root causes of unsustainability and unreliability of WASH services in three case studies in Sub-Saharan Africa (Arusha-Tanzania, Dodowa-Ghana, Kampala-Uganda), we explore how a transition management approach can be designed to support a transition towards sustainable Water, Sanitation and Hygiene (WASH) in Sub-Saharan Africa. We distinguish the following contextual dimensions related to the unsustainability of WASH services: a) Multiplicity of WASH practices, structures and arrangements, b) Governance capacities for WASH services and maintenance, c) Landownership for sustainable access to WASH, d) Public participation in decision-making related to WASH, e) socio-economic structures governing access to WASH. These dimensions prompt the identification of conceptual and application challenges for transition management. Based on these challenges, recommendations were formulated for the design of a prescriptive transition management process that is not only functional but also emancipatory of character.

The Health Impact of Water and Sanitation Utilities Privatization and Regulation in Sub-Saharan Africa

2021 ◽  
Author(s):  
Lisa Bagnoli ◽  
Salvador Bertomeu-Sanchez ◽  
Antonio Estache
Keyword(s):  
Large Scale ◽  
Health Impact ◽  
Sub Saharan Africa ◽  
Water And Sanitation ◽  
Middle Income ◽  
Imperfect Data ◽  
High Population Growth ◽  
Sub Saharan ◽  
Rural Access ◽  
The Impact

As of 2017, the urban access rate to safe water sources in 2017 stood at 84% while rural access was still around 45%. The rates for sanitation were 44% and 22%, respectively. Since the 1980s many high-profile reforms supported by international organizations have been implemented in the region in an attempt to close the access gaps in the water and sanitation sector (WSS). Two recommendations with high international exposure were an increased role for large-scale private sector participation in the management and financing of national or regional utilities and the creation of separate sector regulatory agencies to increase the independence of regulation. Both reforms seemed to contribute to improved water access rates, at least for the urban population, but not enough to catch up with the demands of a fast-growing population; and both failed to deliver on sanitation. The progress these initiatives allowed was correlated with improvements in the average health outcomes for some indicators (i.e., under-five mortality associated to diarrhea) but once again, it was not enough and was not fairly distributed. Indeed, improvements seem to have mostly benefited upper- and middle-income groups. Unfortunately, an evaluation of the health effects of these two reforms have not yet been fully established empirically, which is why it seems prudent to talk about correlations rather than causal effects. Most of the statistically robust evidence on the impact of utilities and regulatory reforms on health is incomplete because details of several dimensions of these reforms and their context are not measured consistently across countries or within countries. In addition, the small amount of econometric evidence available is based on pre-2010 data for SSA. The imperfect data is however solid enough to suggest that without further governance changes in the region, the health risks are likely to increase. This is because due to the high population growth rate of the region, closing the access gaps is likely to get tougher considering current investment levels and technological choices. The necessary changes require improving the match between policy and technological choices, including service delivery technologies that are consistent with the ability to pay and the tariff and subsidy levels adopted to ensure cost recovery without excluding any category of users.

scholarly journals Urban malaria in sub-Saharan Africa: dynamic of the vectorial system and the entomological inoculation rate

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
P. Doumbe-Belisse ◽  
E. Kopya ◽  
C. S. Ngadjeu ◽  
N. Sonhafouo-Chiana ◽  
A. Talipouo ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Species Distribution ◽  
Disease Transmission ◽  
Entomological Inoculation Rate ◽  
Control Strategies ◽  
Integrated Control ◽  
Sub Saharan Africa ◽  
Rapid Urbanization ◽  
Urban Settings ◽  
Sub Saharan

AbstractSub-Saharan Africa is registering one of the highest urban population growth across the world. It is estimated that over 75% of the population in this region will be living in urban settings by 2050. However, it is not known how this rapid urbanization will affect vector populations and disease transmission. The present study summarizes findings from studies conducted in urban settings between the 1970s and 2020 to assess the effects of urbanization on the entomological inoculation rate pattern and anopheline species distribution. Different online databases such as PubMed, ResearchGate, Google Scholar, Google were screened. A total of 90 publications were selected out of 1527. Besides, over 200 additional publications were consulted to collate information on anopheline breeding habitats and species distribution in urban settings. The study confirms high malaria transmission in rural compared to urban settings. The study also suggests that there had been an increase in malaria transmission in most cities after 2003, which could also be associated with an increase in sampling, resources and reporting. Species of the Anopheles gambiae complex were the predominant vectors in most urban settings. Anopheline larvae were reported to have adapted to different aquatic habitats. The study provides updated information on the distribution of the vector population and the dynamic of malaria transmission in urban settings. The study also highlights the need for implementing integrated control strategies in urban settings.

scholarly journals Precision Agriculture for Resource Use Efficiency in Smallholder Farming Systems in Sub-Saharan Africa: A Systematic Review

2021 ◽  
Vol 13 (3) ◽  
pp. 1158
Author(s):  
Cecilia M. Onyango ◽  
Justine M. Nyaga ◽  
Johanna Wetterlind ◽  
Mats Söderström ◽  
Kristin Piikki
Keyword(s):  
Resource Use ◽  
Precision Agriculture ◽  
Large Scale ◽  
English Language ◽  
Management Practices ◽  
Smallholder Farmers ◽  
Management Strategies ◽  
Sub Saharan Africa ◽  
Smallholder Farming ◽  
Sub Saharan

Opportunities exist for adoption of precision agriculture technologies in all parts of the world. The form of precision agriculture may vary from region to region depending on technologies available, knowledge levels and mindsets. The current review examined research articles in the English language on precision agriculture practices for increased productivity among smallholder farmers in Sub-Saharan Africa. A total of 7715 articles were retrieved and after screening 128 were reviewed. The results indicate that a number of precision agriculture technologies have been tested under SSA conditions and show promising results. The most promising precision agriculture technologies identified were the use of soil and plant sensors for nutrient and water management, as well as use of satellite imagery, GIS and crop-soil simulation models for site-specific management. These technologies have been shown to be crucial in attainment of appropriate management strategies in terms of efficiency and effectiveness of resource use in SSA. These technologies are important in supporting sustainable agricultural development. Most of these technologies are, however, at the experimental stage, with only South Africa having applied them mainly in large-scale commercial farms. It is concluded that increased precision in input and management practices among SSA smallholder farmers can significantly improve productivity even without extra use of inputs.

scholarly journals BioLPG for Clean Cooking in Sub-Saharan Africa: Present and Future Feasibility of Technologies, Feedstocks, Enabling Conditions and Financing

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3916
Author(s):  
Kimball C. Chen ◽  
Matthew Leach ◽  
Mairi J. Black ◽  
Meron Tesfamichael ◽  
Francis Kemausuor ◽  
...  
Keyword(s):  
Agricultural Waste ◽  
Sub Saharan Africa ◽  
Green Economy ◽  
Energy Access ◽  
Liquefied Petroleum Gas ◽  
Public And Private ◽  
Middle Income ◽  
Private Sector Investment ◽  
Sub Saharan ◽  
Public And Private Sector

Energy supply for clean cooking is a priority for Sub-Saharan Africa (SSA). Liquefied petroleum gas (LPG, i.e., propane or butane or a mixture of both) is an economically efficient, cooking energy solution used by over 2.5 billion people worldwide and scaled up in numerous low- and middle-income countries (LMICs). Investigation of the technical, policy, economic and physical requirements of producing LPG from renewable feedstocks (bioLPG) finds feasibility at scale in Africa. Biogas and syngas from the circular economic repurposing of municipal solid waste and agricultural waste can be used in two groundbreaking new chemical processes (Cool LPG or Integrated Hydropyrolysis and Hydroconversion (IH2)) to selectively produce bioLPG. Evidence about the nature and scale potential of bioLPG presented in this study justifies further investment in the development of bioLPG as a fuel that can make a major contribution toward enabling an SSA green economy and universal energy access. Techno-economic assessments of five potential projects from Ghana, Kenya and Rwanda illustrate what might be possible. BioLPG technology is in the early days of development, so normal technology piloting and de-risking need to be undertaken. However, fully developed bioLPG production could greatly reduce the public and private sector investment required to significantly increase SSA clean cooking capacity.

scholarly journals Gestational weight gain in low-income and middle-income countries: a modelling analysis using nationally representative data

2020 ◽  
Vol 5 (11) ◽  
pp. e003423
Author(s):  
Dongqing Wang ◽  
Molin Wang ◽  
Anne Marie Darling ◽  
Nandita Perumal ◽  
Enju Liu ◽  
...  
Keyword(s):  
Weight Gain ◽  
North Africa ◽  
Low Income ◽  
Sub Saharan Africa ◽  
Middle Income ◽  
Middle Income Countries ◽  
Gestational Weight ◽  
Latin America And Caribbean ◽  
Nationally Representative ◽  
Sub Saharan

IntroductionGestational weight gain (GWG) has important implications for maternal and child health and is an ideal modifiable factor for preconceptional and antenatal care. However, the average levels of GWG across all low-income and middle-income countries of the world have not been characterised using nationally representative data.MethodsGWG estimates across time were computed using data from the Demographic and Health Surveys Program. A hierarchical model was developed to estimate the mean total GWG in the year 2015 for all countries to facilitate cross-country comparison. Year and country-level covariates were used as predictors, and variable selection was guided by the model fit. The final model included year (restricted cubic splines), geographical super-region (as defined by the Global Burden of Disease Study), mean adult female body mass index, gross domestic product per capita and total fertility rate. Uncertainty ranges (URs) were generated using non-parametric bootstrapping and a multiple imputation approach. Estimates were also computed for each super-region and region.ResultsLatin America and Caribbean (11.80 kg (95% UR: 6.18, 17.41)) and Central Europe, Eastern Europe and Central Asia (11.19 kg (95% UR: 6.16, 16.21)) were the super-regions with the highest GWG estimates in 2015. Sub-Saharan Africa (6.64 kg (95% UR: 3.39, 9.88)) and North Africa and Middle East (6.80 kg (95% UR: 3.17, 10.43)) were the super-regions with the lowest estimates in 2015. With the exception of Latin America and Caribbean, all super-regions were below the minimum GWG recommendation for normal-weight women, with Sub-Saharan Africa and North Africa and Middle East estimated to meet less than 60% of the minimum recommendation.ConclusionThe levels of GWG are inadequate in most low-income and middle-income countries and regions. Longitudinal monitoring systems and population-based interventions are crucial to combat inadequate GWG in low-income and middle-income countries.

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