Publications by authors named "Sadio Diallo"

4 Publications

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Between the City and the Farm: Food Environments in Artisanal Mining Communities in Upper Guinea.

Public Health Nutr 2021 May 12:1-34. Epub 2021 May 12.

Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD, USA.

Objective: Artisanal and small-scale mining (ASM) is a widespread livelihood in low- and middle-income countries, however many in ASM communities face high levels of poverty and malnutrition. The food environments in ASM communities have non-agricultural rural characteristics that differ from those in urban and subsistence rural areas examined in much existing food environment literature.

Design: We examine these complex external and personal food environments in ASM communities via a study using qualitative and quantitative methods. Market surveys and a cross-sectional household survey, plus qualitative mining site non-participant observations and in-depth structured interviews, were conducted in three waves.

Setting: Eighteen study sites in ASM communities in northern Guinea.

Participants: Surveys covered mothers in mining households with young children (n=613); in-depth interviews engaged mothers of young children (n=45), food vendors (n=40), and young single miners (n=15); observations focused on mothers of young children (n=25).

Results: The external food environment in these ASM communities combines widespread availability of commercially-processed and staple-heavy foods with lower availability and higher prices for more nutritious, non-staple foods. Within the personal food environment, miners are constrained in their food choices by considerable variability in daily cash income and limited time for acquisition and preparation.

Conclusions: We demonstrate that ASM communities have characteristics of both urban and rural populations and argue for greater nuance and appreciation of complexity in food environment research and resultant policy and programming.
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May 2021

"If you don't find anything, you can't eat" - Mining livelihoods and income, gender roles, and food choices in northern Guinea.

Resour Policy 2021 Mar;70:101939

Department of International Health, Johns Hopkins Bloomberg School of Public Health - 615 N Wolfe St, Baltimore, MD, 21205, USA.

Artisanal and small-scale mining (ASM) continues to grow as a viable economic activity in sub-Saharan Africa. The health and environmental impacts of the industry, notably linked to the use of potentially toxic chemicals, has been well documented. What has not been explored to the same extent is how pressures associated with ASM affect food choices of individuals and families living in mining camps. This paper presents research conducted in 18 mining sites in northern Guinea exploring food choices and the various factors affecting food decision-making practices. Two of the most influential factors to emerge from this study are income variability and gender roles. Results from this study suggest that through artisanal mining, women have the opportunity to earn a larger income that would otherwise be unavailable through agriculture. However, this benefit of potentially earning a larger income is often reduced or constrained by existing gender roles both at the mines and in the home, such as disparity in pay between men and women and increased pressures on women's time. This limits the potential benefit to household food decision-making that could have been gained from higher income. These results do not seek to establish one livelihood as superior; rather, they demonstrate that even when presented with opportunities to earn higher incomes, women still face many of the same barriers and challenges that they would in other economic activities. Additionally, while work and time demands on women change upon arrival in the mining camps, existing gender roles and expectations do not, further restricting women's decision-making capacity.
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March 2021

Food Security in Artisanal Mining Communities: An Exploration of Rural Markets in Northern Guinea.

Foods 2020 Apr 10;9(4). Epub 2020 Apr 10.

Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.

The number of people engaged in artisanal and small-scale mining (ASM) has grown rapidly in the past twenty years, but they continue to be an understudied population experiencing high rates of malnutrition, poverty, and food insecurity. This paper explores how characteristics of markets that serve ASM populations facilitate and pose challenges to acquiring a nutritious and sustainable diet. The study sites included eight markets across four mining districts in the Kankan Region in the Republic of Guinea. Market descriptions to capture the structure of village markets, as well as twenty in-depth structured interviews with food vendors at mining site markets were conducted. We identified three forms of market organization based on location and distance from mining sites. Markets located close to mining sites offered fewer fruit and vegetable options, as well as a higher ratio of prepared food options as compared with markets located close to village centers. Vendors were highly responsive to customer needs. Food accessibility and utilization, rather than availability, are critical for food security in non-agricultural rural areas such as mining sites. Future market-based nutrition interventions need to consider the diverse market settings serving ASM communities and leverage the high vendor responsiveness to customer needs.
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April 2020

IFN-gamma-inducible protein 10 and pentraxin 3 plasma levels are tools for monitoring inflammation and disease activity in Mycobacterium tuberculosis infection.

Microbes Infect 2005 Jan 18;7(1):1-8. Epub 2004 Nov 18.

Department of Internal Medicine, University of Florence, Viale Morgagni 85, 50134 Florence, Italy.

IFN-gamma-inducible protein 10 (IP-10/CXCL10) is a chemokine involved in delayed-type hypersensitivity and attraction of monocytes and activated T lymphocytes at inflammatory foci, whereas pentraxin 3 (PTX3) is part of the innate immune response. In the Republic of Guinea, 220 newly diagnosed, HIV-negative, pulmonary tuberculosis (TB) patients were studied together with 220 healthy household controls and 220 community controls. CXCL10 and PTX3 blood levels were assessed by ELISA at diagnosis, after 2 months and at the end of treatment. In untreated patients, both CXCL10 and PTX3 levels were higher (P < 0.0001) than in controls, although household controls had higher (P < 0.0001) CXCL10 and PTX3 levels than community controls, but lower (P < 0.0001) than those of patients. At the end of treatment, 186 cured patients showed reduction (P < 0.0001) in both CXCL10 and PTX3 levels. In 34 patients with treatment failure, both CXCL10 and PTX3 levels increased further. In five previously healthy households who developed TB during the follow-up and in two patients who relapsed after treatment, a remarkable increase in both CXCL10 and PTX3 plasma levels was observed. Active TB is associated with increased CXCL10 and PTX3 levels in the plasma. Although not specific for TB, measurement of these proteins may help the monitoring of disease activity and efficacy of therapy.
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January 2005