Potential groundwater pollution from improper oil and metal waste disposal in Suame, Ghana

Suame is an industrialized hub in Kumasi, Ghana, that is noted for vehicle repairs and servicing, sale of automobile spare parts, and metal fabrication. Some of these activities generate huge volumes of waste oil and metals that are often disposed off indiscriminately into the environment. These could pose a threat to the quality of groundwater in the area, especially if they continuously accumulate in the environment. This study, therefore, investigated the potential impact of the waste disposal on groundwater quality in the area. The methods employed involved mapping all the potential waste oil spillage sources and sampling the soils in such areas (at 0 – 30 and 30 – 60 cm depths) and groundwater supply points for laboratory analyses to determine the presence of the waste. In all, 36 samples (comprising 12 soil and 24 groundwater) were analysedfor the presence of heavy metals including Cd, Ni, Cu, Pb, Zn and Cr, which were used as traceelements for the presence of the waste in the samples. Computedgeo-accumulation indices from the results show the soils are moderately to heavily polluted with Cd and Pb whilst the groundwater, when compared to the WHO drinking water guidelines, is polluted with Pb and Ni. Althoughthe source of the high Pb content observed could be attributed to its transport directly from the activities in the area, the presence of high Ni makes it inconclusive since the Ni in the soil was within the concentration expected of the parent rock geochemistry. This notwithstanding, the study has indicated that groundwater in the area is not safe for human consumption unless the lead and nickel concentrations are reduced to acceptable standard for drinking.Keywords: Groundwater quality, pollution, waste disposal, Suame, Ghan

Hydrogeological evaluation of geological formations in Ashanti Region, Ghana

The success of groundwater exploitation in an area largely depends on prior knowledge of existing hydrogeological parameters such as borehole yield, overburden thickness, depth of boreholes, static water level, specific capacity and the quality of water. This study, therefore, employed Geographical Information System to assess some of these hydrogeological parameters in the Ashanti Region using the ordinary kriging interpolation method. Data on 2,788 drilled boreholes in the region were used and the assessment focused on the various geological formations in the region that comprised the Birimian, Granitoids, Tarkwaian and Voltaian formations. The study results indicate that the Birimian formation is generally within medium to high yielding potential zones (30 – 60 l/min or higher) with a high drilling success rate of 91% and average borehole depth of 53 m. The Granitoids are, mostly, within the low yielding zone (< 30 l/min) with isolated high yielding boreholes and have average borehole depth and drilling success rate of 50 m and 72 % respectively. The Tarkwaian formation, on other hand, is within the medium yield zone with a drilling success rate of 80 % whilst the Voltaian formation is mainly classified to fall within low yield zone with about 60% success rate although significant high yield zones occur within the sandstone formation underlying its westernmost part in the region. Groundwater in the region is generally potable except in a few locations within the Birimian and ranitoids,where there are problems with levels of iron, nitrate, manganese and pH. Keywords: Groundwater; Hydrogeological parameters; Geological formations; Geographical Information System; Ashanti Regio

Sex differences in perceived risk and testing experience of HIV in an urban fishing setting in Ghana

The concept of neighborhood remains important in criminology but there is an increasing academic interest in the potential impact of the Modifiable Areal Unit Problem (MAUP) on neighborhood based studies. In the present study data over arson from the Swedish rescue services 2007-2012 have been employed to analyze MAUP in the city of Malmö, Sweden. The city has been divided into 50*50 meter pixels as micro-places (n=64540) which have been assigned a value for arson from frequency of arson within the pixel. The analysis is based on a comparison of two types of administrative geographical units alongside 40 randomly generated sets of thiessen polygon geographical units. Empty two-level hierarchical regression models with the micro-places as level 1 unit have been used to calculate Intra-Class Correlations (ICC) separately with each of the 42 different geographical units of analysis as level 2 units. The analysis is repeated with two alternative methods, kernel density and euclidian distance, to calculate a value for each micro-place. Results show that administrative geographical units of analysis in some cases just are marginally better than geographical units with random boundaries if the basic urban structure is taken into account

Febrile illness diagnostics and the malaria-industrial complex: a socio-environmental perspective

Abstract Background Global prioritization of single-disease eradication programs over improvements to basic diagnostic capacity in the Global South have left the world unprepared for epidemics of chikungunya, Ebola, Zika, and whatever lies on the horizon. The medical establishment is slowly realizing that in many parts of sub-Saharan Africa (SSA), particularly urban areas, up to a third of patients suffering from acute fever do not receive a correct diagnosis of their infection. Main body Malaria is the most common diagnosis for febrile patients in low-resource health care settings, and malaria misdiagnosis has soared due to the institutionalization of malaria as the primary febrile illness of SSA by international development organizations and national malaria control programs. This has inadvertently created a “malaria-industrial complex” and historically obstructed our complete understanding of the continent’s complex communicable disease epidemiology, which is currently dominated by a mélange of undiagnosed febrile illnesses. We synthesize interdisciplinary literature from Ghana to highlight the complexity of communicable disease care in SSA from biomedical, social, and environmental perspectives, and suggest a way forward. Conclusion A socio-environmental approach to acute febrile illness etiology, diagnostics, and management would lead to substantial health gains in Africa, including more efficient malaria control. Such an approach would also improve global preparedness for future epidemics of emerging pathogens such as chikungunya, Ebola, and Zika, all of which originated in SSA with limited baseline understanding of their epidemiology despite clinical recognition of these viruses for many decades. Impending ACT resistance, new vaccine delays, and climate change all beckon our attention to proper diagnosis of fevers in order to maximize limited health care resources

Numerical modeling of contaminant transport in fractured crystalline rocks (FCRS)

The prediction of contaminant transport in saturated fractured media is a difficult task, due to the complexity of fracture geometry, connectivity, heterogeneity and anisotropy of hydraulic conductivities and chemical processes. Generally, the simulation of contaminant transport in fractured media is by the discrete fracture network (DFN) approach. However, this approach is not appropriate for district to regional scale due to computational challenges and the extensive data required by discrete fracture models for fracture system characterisation. In this paper, a hybrid approach that combined the advective-dispersion equation (ADE) continuum model, and discrete fracture network (DFN) simulation is used for the prediction of the contaminant transport in the fractured crystalline rocks within southeast Ghana. The hydrogeology of the study area consists of crystalline rocks with negligible matrix porosity. The approximate geometry of the problem was represented as a horizontal aquifer without curvature, and no-flow boundaries existing at the top and bottom of the aquifer. A MATLAB code is developed for the finite difference method to obtain the numerical solution. The study demonstrates that, the major factors affecting contaminant migration in the study area include, hydraulic conductivity which depends on fracture connectivity, aperture and infill material, and the retardation factors of the various contaminants. Results of transport simulation indicate that, contaminants could travel between 1.0 to 1.7 m/day in the horizontal direction. This spreading effect of plume movement through the fractured rocks can pose critical environmental problems. &nbsp

Urinary Tract Infections among Bladder Outlet Obstruction Patients in Accra, Ghana: Aetiology, Antibiotic Resistance, and Risk Factors

The aim of this study was to investigate urinary tract infections among patients with Bladder Outlet Obstruction (BOO) at the Korle Bu Teaching Hospital (KBTH) in Accra, Ghana, including the prevalence, risk factors, aetiological agents and their antibiogram. Urine specimens were collected from 188 male patients presenting with BOO and cultured for bacteria. The bacterial isolates were identified using standard microbiological methods and tested against a spectrum of antimicrobial agents using the Kirby Bauer method. Demographic information and the clinical history of study participants were also recorded. The prevalence of urinary tract infection among the BOO patients was 76.6% and the main risk factor identified was catheterization (p < 0.0001). A wide range of bacterial organisms was isolated from urine specimens and they were predominantly, Enterobacteriaceae; Escherichia coli was the most frequent cause of bacteriuria (33.3%), followed by Klebsiella (17.3%). Bacterial isolates were most resistant to Augmentin (97.8%) followed by tetracycline (85.8%), nalidixic acid (82.8%) and ciprofloxacin (75%) while 93.6% were multi-drug resistant. The highest susceptibility was observed with amikacin, which had a resistance prevalence of 4.4% resistance. These findings have important implications in the treatment of urinary tract infections among the BOO patients in Ghana

Health insurance subscription among women in reproductive age in Ghana: do socio-demographics matter?

Background: Premised that health insurance schemes in Africa have only been introduced recently and continue evolving, various concerns have been raised regarding their effectiveness in improving utilisation of orthodox health care and the reduction of out-of-pocket expenditures for their population, particularly women. Objective: To examine the effects of socio-demographics on health insurance subscription among women in Ghana. Methods: The study draws on the 2014 Ghana Demographic and Health Survey. Bivariate descriptive analysis and binary logistic regression were used to analyse the data. Results: Wealth status, age, religion, birth parity, marriage and ecological zone were found to have significantly predicted health insurance subscription among women in reproductive age in Ghana. Urban dwellers, women who are nulliparous, those with no or low levels of education, African traditionalists and the poor were those who largely did not subscribe to the scheme. Conclusion: The findings underscore the need for the National Health Insurance Authority to carry out more education in association with the National Commission for Civic Education and the Information Services Department to recruit more urban dwellers, nulliparous women, those with no or low levels of education, African traditionalists and the poor unto the scheme