Abstract. Antimicrobial sensitivity tests were performed on four-hundred and ninety-seven bacterial isolates from Sudanese patients with diarrhea or urinary tract infections. Shigella dysenteriae type 1 and enteropathogenic Escherichia coli showed high resistance rates (percentage of isolates showing antibiotic resistance) against the commonlyused antimicrobial agents: ampicillin, amoxicillin, chloramphenicol, tetracycline, cotrimoxazole, nalidixic acid, sulfonamide, and neomycin, and were completely sensitive to ciprofloxacin. Eighteen resistance patterns against nine antimicrobial agents tested were observed in enteric pathogens. Resistance to ampicillin, amoxicillin, tetracycline, cotrimoxazole, and sulfonamide was the most frequent pattern. The common urinary pathogens, E. coli, Klebsiella pneumoniae, and Proteus mirabilis showed high rates of resistance to ampicillin, amoxicillin, cotrimoxazole, tetracycline, sulfonamide, trimethoprim, streptomycin, and carbenicillin. We recommend that physicians seek updated knowledge of the common antibiotic-sensitivity patterns when starting empirical antibiotic therapy in Sudanese patients with diarrhea or urinary tract infection.

Our findings further illustrate the challenge of increasing carbapenem-resistance in A. baumannii isolates in Saudi Arabia. The high distribution of class D carbapenemase-encoding genes, mainly ISAba1/OXA-23 and ISAba1/OXA-24 carbapenemases, is worrisome and presents an emerging threat in our hospital. Local molecular surveillance is essential to help control carbapenem-resistant A. baumannii nosocomial infections and to prevent DNA exchange among endemic nosocomial pathogens.

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. 1999. Access to adequate supplies of good quality drinking water continues to be limited among many rural and periurban communities in Africa, despite several decades of water improvement programmes. The present study investigated water quality at the source and point of consumption among rural and peri-urban communities in northern Sudan. Faecal coliform counts were determined by the membrane filtration technique and geometric mean counts compared in different seasons and among the different communities. Among nomadic pastoralists and riverine villages, both water sources and water stored for consumption had faecal coliform counts grossly in excess of WHO standards, with higher counts at the end of the rainy season. In the peri-urban community on the outskirts of Omdurman, while water quality from the distribution system had faecal coliform counts generally below 10 dl −1 , after storage, water was of considerably lower quality, with faecal coliform counts up to 1000 d1 −1 . The highest counts again occurred in the rainy season. Rates of diarrhoeal disease for Khartoum province were also greatest towards the end of the rainy season. The study has shown that poor quality water continues to be a major risk factor for public health in these communities.

Occupational stress has a significant impact on student learning and thereby on the contribution that such institutions can make to society. This affects organizational performance by reducing productivity and efficiency which affect the organization negatively. The aim of the current study was to determine the factors associated with occupational stress and their relationship with organizational performance at one of the private universities in Sudan. A total of 150 male and female employees from different departments and with various educational levels in the main building of the university were randomly selected. Data was collected using a questionnaire with background questions, job stressors such as role conflict and ambiguity, lack of participation in decision making, lack of authority, workload, unsatisfactory working conditions and interpersonal relationships, and statements about the effect on organisational performance. Questions were based on three-and four-point scale. Responses were grouped in terms of scores to show the level of job stress. Descriptive statistics was carried out using SPSS programme. Results indicated that on average the employees experienced high degree of job stress. Job stressors affected the general physical health of employees, their job satisfaction and performance as well as their commitment negatively. Similar findings were reported in other studies. The study recommended that the university needs to elevate the situation and resolve all the factors affecting the employees by for example increasing the number of staff needed to perform the tasks and/or decreasing the number of students enrolled.Keywords: Higher Education; Occupational Stress; Organizational Performance; Sudan IntroductionStress is a prevalent problem in modern life (Smith, 2000;Chang & Lu, 2007). In 1964, Selye was the first to use the term "stress" to describe a set of physical and psychological responses to adverse conditions or influences (cited from Fevre et al., 2003). Occupational stress can be defined as a disruption of the emotional stability of the individual that induces a state of disorganization in personality and behaviour (Nwadiani, 2006). A stressor may be defined as any "demand made by the internal or external environment that upsets a person's balance and for which restoration is needed" (Herbert, 1997;Larson, 2004). Job stressors may refer to any characteristic of the workplace that poses a threat to the individual (Bridger et al., 2007). They affect organizational performance by reducing productivity and efficiency which affect the organization negatively (Dua, 1994;Brown & Uehara, 2008;Reskin, 2008). Theories of Occupational StressThere are several theories of occupation stress, in this section, the "person-environment fit theory, the "demand-control" theory and the "cybernetic and systems" theory will be the selected theories since they are prevalent and central to the literature on occupational stress (Fevre et al., 2003). Moreover, they are representative of the range of theories in t...