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Occurrence of Typhoidal and Non-Typhoidal Salmonellae among Poultry Workers in the Southern, Nigeria

Open j.urnal of Medical Microbiology 2019年第4期9卷 201-214页

作者： Etanguno Effiong Owowo veronica j. umoh Iquo Effiong Okon Department of Microbiology Akwa Ibom State University (AKSU) Mkpat Enin Nigeria Health Initiative for Stability & Safety in Africa (HIFASS) Uyo Nigeria

Typhoid fever and non-typhoidal salmonellosis remain endemic in most developing countries with large scale transmission through contaminated food and drinking water. Since the early 2000s, poultry has also been found to be a common food source for Salmonella enteritidis infections. A total of 500 blood, stool, cloaca swab and egg shell swab specimens were collected respectively from poultry, non-poultry workers and birds in Akwa Ibom State and screened for Salmonella species using standard cultural and serological techniques. The overall prevalence rate was 117 (23.4%). Salmonella species were distributed in all the three senatorial districts of the State, percentage distribution of Salmonella isolates was 42 (25%) for Uyo, 35 (20.8%) for Eket and 40 (23.8%) were isolated from Ikot Ekpene senatorial districts. Out of 372 human subj.cts screened 77 (20.7%) were positive and 38 (20.4%) were isolated from non-poultry workers while 39 (21.0%) were isolated from poultry Staff in the three senatorial districts. Out of 128 samples of poultry products analysed 40 (31.3%) were isolated. 23 (18%) were isolated from cloaca swabs while 17 (13.3%) were isolated from egg shell swabs. In this study, all the serological significant Typhoid fever cases were confirmed by blood culture. According to sero-grouping and source of sample collection 23.9% S. typhi was isolated from human followed by S. paratyphi A (20.5%) while S. enteritidis and S. gallinarum (19.7%). Among poultry products S. gallinarum, S. enteritidis, S, pullorum, S. paratyphi A, and S. typhimurium were isolated from bird Cloaca swab and Egg shell swab. Salmonella pullorum and S. typhi were not isolated from human and poultry respectively. High prevalence of Salmonella serovars such as S. gallinarium, S. typhi, S. Typhimurium and S. enteritidis with regular consumption of poultry and eggs without proper disinfection and appropriate boiling represent a serious public health risk in Akwa Ibom State. Demographic data obta

关键词： Poultry Salmonella Poultry Workers Antibiogram

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Occurrence of <i>Escherichia coli</i>O157 in Retailed-Beef and Related Meat Products in Zaria, Nigeria

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Food and Nutrition Sciences 2014年第6期5卷 481-487页

作者： Salome Y. Tafida j.cob K. P. Kwaga Mohammed Bello j.naidu Kabir veronica j. umoh Sabo E. Yakubu Andrew j. Nok Centre for Biotechnology Research and Training Ahmadu Bello University Zaria Nigeria Department of Livestock and Pest Control Services Federal Ministry of Agriculture Gombe Nigeria Department of Microbiology Faculty of Science Ahmadu Bello University Zaria Nigeria Department of Veterinary Public Health and Preventive Medicine Faculty of Veterinary Medicine Ahmadu Bello University Zaria Nigeria

This study evaluated retailed-beef and related meat products for E. coli O157 in Zaria, Nigeria. Sample types included raw meat, “suya” (roasted meat), “balangu” (barbequed meat), “kilishi” (spiced sun dried meat) and “dambu” (shredded fried meat). A total of 182 samples were analyzed for E. coli O157. Isolates were characterized using conventional biochemical methods and Microbact 12E test kit. Susceptibilities of the isolates to 18 commonly used antimicrobial agents were determined by the disk diffusion method. The carriage of stx1 and stx2 genes was determined by PCR. Microbact confirmed 4 E. coli isolates. All isolates exhibited multiple drug resistance to the antimicrobial agents tested. An overall prevalence of 2.2% was obtained for E. coli O157. All 4 isolates of E. coli O157 were isolated from raw meat;two of which harboured the stx1 gene.

关键词： E. coli O157 Meat Products Multiple Drug Resistance Food Safety

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Assessment of sanitary conditions of unregistered pig slaughter slabs and post mortem examination of pigs for Taenia solium metacestodes in Kaduna metropolis, Nigeria

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Infectious Diseases of Poverty 2014年第1期3卷 424-429,423页

作者： Agnes U Edia-Asuke Helen I Inabo veronica j.umoh Clement MZ Whong Sunday Asuke Richard E Edeh Department of Microbiology Ahmadu Bello UniversityZariaKadunaNigeria Biological Sciences University of KwaZulu-NatalWestville CampusDurbanSouth Africa Department of Community Medicine Ahmadu Bello University Teaching HospitalShika ZariaKadunaNigeria Faculty of Veterinary Medicine Ahmadu Bello UniversityZariaKadunaNigeria

Background:A number of studies document the prevalence of Taenia solium infections in Nigeria,yet these studies do not cover porcine cysticercosis in private home slaughter slabs where there is no routine meat inspection and backyard pig keeping,slaughtering and sale are common ***:An environmental and sanitary assessment was conducted within two unregistered home pig slaughter slabs in selected parts of the Kaduna metropolis in *** premises were inspected for availability of basic facilities and questionnaires were used to elicit necessary informative *** were examined for taeniasis by stool microscopy and copro-antigen enzyme linked immunosorbent assay(copro-Ag ELISA)to ascertain *** slaughtered at the premises were examined for ***:Home slaughter conditions were substandard,unhygienic and lacked the basic facilities of a proper *** of porcine cysticercosis was 9.3%.The butchers participating in the study had very poor knowledge of *** infections and 30%tested positive for taeniasis by copro-Ag ELISA at the time of the ***:Home slaughter of pigs in the areas studied should be considered and integrated as a component of prevention and control programmes-particularly through educational interventions-in order to equip individuals involved with a good understanding of the risks associated with animal husbandry and human practices.

关键词： Pig slaughter slabs Home slaughter Copro-Ag ELISA Taenia solium metacestodes Kaduna Nigeria

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Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

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j.urnal of Materials Science & Technology 2019年第7期35卷 1378-1387页

作者： L.M.Zhang S.D.Zhang A.L.Ma A.j.umoh H.X.Hu Y.G.Zheng B.j.Yang j.Q.Wang CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of Sciences62 Wencui RoadShenyang 110016PR China School of Materials Science and Engineering University of Science and Technology of China72 Wenhua RoadShenyang 110016PR China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016PR China

The effect of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution was investigated by cyclic polarization, Mott-Schottky and X-ray photoelectron spectroscopy techniques. Results indicated that the open circuit potential of Al-Co-Ce amorphous alloys displayed a decreased tendency with the increase in Ce content, and the amorphous alloy with 4 at.% Ce presented both the lowest passive current density and donor density indicating the best corrosion resistance, while adding excess Ce led to the reduced corrosion resistance of Al-Co-Ce alloys, Furthermore, it was found that a low Ce content is beneficial to the formation of a more protective passive film on Al-Co-Ce amorphous alloys, and the corrosion inhibition reactions of Al-Co-Ce alloys in 0.6 M NaCl solution were changed with the increase in Ce content and the detailed reasons were discussed.

关键词： Amorphous materials Polarization Corrosion Photoelectron spectroscopies

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