1. Academic Wits Research Publications (Faculties submissions)
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Item The importance of morphological identification of African anopheline mosquitoes (Diptera: Culicidae) for malaria control programmes(BMC, 2018-01) Erlank, Erica; Koekemoer, Lizette L.; Coetzee, MaureenBackground: The correct identification of disease vectors is the first step towards implementing an effective control programme. Traditionally, for malaria control, this was based on the morphological differences observed in the adults and larvae between different mosquito species. However, the discovery of species complexes meant that genetic tools were needed to separate the sibling species and today there are standard molecular techniques that are used to identify the two major malaria vector groups of mosquitoes. On the assumption that species-diagnostic DNA polymerase chain reaction (PCR) assays are highly species-specific, experiments were conducted to investigate what would happen if non-vector species were randomly included in the molecular assays. Methods: Morphological keys for the Afrotropical Anophelinae were used to provide the a priori identifications. All mosquito specimens were then subjected to the standard PCR assays for members of the Anopheles gambiae complex and Anopheles funestus group. Results: One hundred and fifty mosquitoes belonging to 11 morphological species were processed. Three species (Anopheles pretoriensis, Anopheles rufipes and Anopheles rhodesiensis) amplified members of the An. funestus group and four species (An. pretoriensis, An. rufipes, Anopheles listeri and Anopheles squamosus) amplified members of the An. gambiae complex. Conclusions: Morphological identification of mosquitoes prior to PCR assays not only saves time and money in the laboratory, but also ensures that data received by malaria vector control programmes are useful for targeting the major vectors.Item Measurement and conceptualization of male involvement in family planning: a bibliometric analysis of Africa-based studies(BMC, 2024-06) Petlele, Rebaone; Oni, Tosin Olajide; Banjo, Olufunmilayo Olufunmilayo; Bankole, Akinrinola; Akinyemi, Akanni IbukunBackground: Male involvement in Family Planning (FP) is an exercise of men’s sexual and reproductive health rights. However, the measurement of male involvement has been highly inconsistent and too discretional in FP studies. As a result, we used bibliometric tools to analyze the existing measures of male involvement in FP and recommend modifications for standard measures. Methods: Using developed search terms, we searched for research articles ever published on male involvement in FP from Scopus, Web of Science, and PubMed databases. The search results were filtered for studies that focused on Africa. A total of 152 research articles were selected after the screening, and bibliometric analysis was performed in R. Results: Results showed that 54% of the studies measured male involvement through approval for FP, while 46.7% measured it through the attitude of males to FP. About 31% measured male involvement through input in deciding FP method, while others measured it through inputs in the choice of FP service center (13.6%), attendance at FP clinic/service center (17.8%), and monetary provision for FP services/materials (12.4%). About 82.2% of the studies used primary data, though the majority (61.2%) obtained information on male involvement from women alone. Only about one in five studies (19.1%) got responses from males and females, with fewer focusing on males alone. Conclusion: Most studies have measured male involvement in FP through expressed or perceived approval for FP. However, these do not sufficiently capture male involvement and do not reflect women’s autonomy. Other more encompassing measures of male involvement, which would reflect the amount of intimacy among heterosexual partners, depict the extent of the exercise of person-centered rights, and encourage the collection of union-specific data, are recommended.Item The importance of morphological identification of African anopheline mosquitoes (Diptera: Culicidae) for malaria control programmes(BioMed Central (BMC), 2018-01) Erlank, Erica; Koekemoer, Lizette L.; Coetzee, MaureenBackground: The correct identification of disease vectors is the first step towards implementing an effective control programme. Traditionally, for malaria control, this was based on the morphological differences observed in the adults and larvae between different mosquito species. However, the discovery of species complexes meant that genetic tools were needed to separate the sibling species and today there are standard molecular techniques that are used to identify the two major malaria vector groups of mosquitoes. On the assumption that species-diagnostic DNA polymerase chain reaction (PCR) assays are highly species-specific, experiments were conducted to investigate what would happen if non-vector species were randomly included in the molecular assays. Methods: Morphological keys for the Afrotropical Anophelinae were used to provide the a priori identifications. All mosquito specimens were then subjected to the standard PCR assays for members of the Anopheles gambiae complex and Anopheles funestus group. Results: One hundred and fifty mosquitoes belonging to 11 morphological species were processed. Three species (Anopheles pretoriensis, Anopheles rufipes and Anopheles rhodesiensis) amplified members of the An. funestus group and four species (An. pretoriensis, An. rufipes, Anopheles listeri and Anopheles squamosus) amplified members of the An. gambiae complex. Conclusions: Morphological identification of mosquitoes prior to PCR assays not only saves time and money in the laboratory, but also ensures that data received by malaria vector control programmes are useful for targeting the major vectors.Item SHBG, free testosterone, and Type 2 Diabetes risk in middle-aged African men: a longitudinal study(Oxford University Press, 2024) Norris, Shane; Seipone, Ikanyeng D.; Mendham, Amy E.; Storbeck, Karl-Heinz; Oestlund, Imken; Kufe, Clement N.; Chikowore, Tinashe; Masemola, Maphoko; Crowther, Nigel J.; Kengne, Andre Pascal; Olsson, Tommy; Brown, Todd; Micklesfield, Lisa K.; Goedecke, Julia H.Objectives: To investigate longitudinal changes in SHBG and free testosterone (free T) levels among Black middle-aged African men, with and without coexistent HIV, and explore associations with incident dysglycaemia and measures of glucose metabolism. Design: This longitudinal study enrolled 407 Black South African middle-aged men, comprising primarily 322 men living without HIV (MLWOH) and 85 men living with HIV (MLWH), with normal fasting glucose at enrollment. Follow-up assessments were conducted after 3.1 ± 1.5 years. Methods: At baseline and follow-up, SHBG, albumin, and total testosterone were measured and free T was calculated. An oral glucose tolerance test at follow-up determined dysglycaemia (impaired fasting glucose, impaired glucose tolerance, type 2 diabetes) and glucose metabolism parameters including insulin sensitivity (Matsuda index), insulin resistance (homeostasis model assessment of insulin resistance), and beta(β)- cell function (disposition index). The primary analysis focussed on MLWOH, with a subanalysis on MLWH to explore whether associations in MLWOH differed from MLWH. Results: The prevalence of dysglycaemia at follow-up was 17% (n = 55) in MLWOH. Higher baseline SHBG was associated with a lower risk of incident dysglycaemia (odds ratio 0.966; 95% confidence interval 0.945-0.987) and positively associated with insulin sensitivity (β = 0.124, P < .001) and β-cell function (β = 0.194, P = .001) at follow-up. Free T did not predict dysglycaemia. In MLWH, dysglycaemia prevalence at follow-up was 12% (n = 10). Neither baseline SHBG nor free T were associated with incident dysglycaemia and glucose metabolism parameters in MLWH. Conclusion: SHBG levels predict the development of dysglycaemia in middle-aged African men but do not exhibit the same predictive value in MLWH.Item Why skills anticipation in African VET systems needs to be decolonized: the wide-spread use and limited value of occupational standards and competency-based qualifications(Elsevier, 2023-08) Allais, StephanieThe shift from manpower-planning to labour market analysis and skills anticipation has been analyzed since the 80 s in this journal and elsewhere, with the aim of improving. Insights into how education can contribute to economic growth and development. This paper considers recent trends in policies for skills anticipation and curriculum reform in Africa, with a focus on technical and vocational education and training (TVET) systems. The data consists of 2 continent-wide surveys of a range of TVET stakeholders, document analysis of skills and TVET policy as well as industrial policy where available online, and 21 in-depth interviews with key role players and experts in 13 countries. Our research found considerable activity developing pre-determined rules and tools that don’t work in their own right, and are inappropriate for African labour markets because they are not used in formal work, and have little engagement with informal work. A set of ‘rules and tools’, such as occupational standards, qualifications frameworks, and part qualifications/ modularization, is promoted by international organizations. These pre-developed and uniform solutions continues to dominate policy agendas. We found considerable focus on developing and (to some extent) using these rules and tools for forward planning, system improvement, and curriculum design. Most noticeable was a strong emphasis on competency-based qualifications, which are described as a tool for skills anticipation as well as curriculum reform, drawing on employer input into skills requirements. There is considerable focus on employer-identified skills needs as the tool for both understanding current and emerging economic demand for skills as well as medium to longer term skills needs. The dependence on employer-specified competencies means there is little engagement with the reality of informal work in the African context—other than strong rhetorical emphasis on entrepreneurship as an add on in curriculum design. Amongst other problems, the ‘rules and tools’ which are being implemented in many countries start from an idealized vision, and are more preoccupied with their own internal logic than the systems with which they are dealing. The rules and tools present a level playing field for individuals and for countries, constrained only by a lack of skills, and a world view in which everyone could come out on top.Item Chinese artificial intelligence in Africa: Digital colonisation or liberalisation?(University of the Witwatersrand, Johannesburg, 2023-09) Tinarwo, Joseph; Babu, Suresh ChandraIn this era of globalisation and progressive digitalisation, artificial intelligence (AI) has become an integral part of our everyday lives. While AI technology is lauded for increasing economic growth and solving some of the intricate global development challenges, such as climate change as well as disease and natural disaster forecasting, it has become a threat to citizen freedom and democracy and there are concerns of data privacy and security. China is rapidly expanding its AI and has emerged as one of the leading nations in artificial intelligence, research and development, particularly in the global South. Africa is one of the continents that has become a destination of the fast-expanding Chinese AI, notwithstanding that its impacts remain unknown. This research primarily adopted a qualitative research approach to examine the impact of Chinese AI in Africa and identify opportunities for facilitating positive influence of Chinese AI and digital presence in Africa. The study found that the expansion of Chinese AI in the global South, using Zimbabwe and South Africa as case studies, has been associated with mixed results. Since its beginning in the late 1970s after the economic reform, the Chinese AI-led automation has resulted in improved productivity, particularly in agriculture, health, infrastructure and manufacturing industries. However, the Chinese AI has been associated with gross human rights violations and promotion of corrupt practices, such as patronage and rent-seeking behaviour. Additionally, Chinese AI is undermining the rule of law and the functionality and legitimacy of weaker state institutions and processes.Item Entrepreneurship, digitalisation and productivity Evidence from sub-Saharan African region(University of the Witwatersrand, Johannesburg, 2023-09) Edeh, JudeEconomic growth in Sub-Saharan Africa has been slow and the region has been struggling to address the mounting challenges, ranging from unemployment to poverty. While research, especially from advanced economies, suggests that entrepreneurship is regarded as a major driver of productivity growth, it is still unclear whether and how entrepreneurship promotes productivity in Sub-Saharan Africa. This paper fills the gap by examining the interconnected impact of entrepreneurship and digital infrastructure on productivity, using panel data from Sub-Saharan African countries. The econometric estimates reveal that digital infrastructure has moderating effects on the entrepreneurship—productivity nexus. Thus, these results imply that entrepreneurship does not promote productivity, except through the enabling effect of digital infrastructure. The study provides policy implications for governments and policymakers in the Sub-Saharan African countries.Item Full Proceedings - Arts Research Africa Conference 2020(Arts Research Africa (ARA), 2020) Doherty, ChristoThe full proceedings of the Arts Research Africa Conference 2020, held at the University of the Witwatersrand, Johannesburg, from 22 - 24 January 2020. Description: An international conference organised by the Arts Research Africa project in the Wits School of Arts. The conference featured a wide variety of inputs, from traditional conference paper presentations and panels, to performances, interactive engagements and workshops. The conference brought together artists, scholars, and artistic researchers to collectively address the question of artistic research in Africa in the 21st century.