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Adjei VY, Mensah GI, Parry-Hanson Kunadu A, Tano-Debrah K, Ayi I, Addo KK. Microbial Safety of Beef Along Beef Value Chains in the Ashaiman Municipality of Ghana. Front Vet Sci 2022; 9:813422. [PMID: 35812857 PMCID: PMC9257630 DOI: 10.3389/fvets.2022.813422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Food from animal sources continues to be a significant food safety hazard. This study determined the microbial quality and safety of beef along beef value chains with case studies in the Ashaiman Municipality of Ghana. Raw beef samples were collected from four slaughter slabs in the Ashaiman Municipality and analyzed using standard microbiological methods to determine the quality and prevalence of specific pathogens, including Salmonella species, Listeria monocytogenes (L. monocytogenes), and Brucella species, as well as Toxoplasma gondii (T. gondii), Cyclospora cayetanensis (C. cayetanensis), and Cryptosporidium parvum (C. parvum). Data regarding food safety knowledge and practices were collected and observed from stakeholders (cattle farmers, butchers, and beef retailers). Salmonella typhimurium was isolated from 7.5% (6/80) of the total raw beef samples. However, L. monocytogenes, Brucella spp., T. gondii, C. cayetanensis, and C. parvum were not isolated in this study. The mean level of microbial contamination of beef from the slaughter slabs/abattoir [5.2 Log10 colony-forming unit (CFU)/g] was not significantly different (p > 0.05) from the mean level observed at retail points (5.4 Log10 CFU/g). However, the mean coliform count of 4.3 Log10 CFU/g recorded at retail shops exceeded the permissible limits of 104 CFU/g (4 Log10 CFU/g) required by the Ghana Standards Authority for safety of meat and carcasses. Knowledge on food safety was at average level for butchers and retailers. Unhygienic practices and poor sanitary conditions at the abattoirs and retail shops observed could be the main contributing factors to microbial contamination of raw beef. Continuous education for meat handlers on issues of food safety and monitoring of slaughter activities will reduce the rate and level of contamination of beef.
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Affiliation(s)
- Vida Yirenkyiwaa Adjei
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
- *Correspondence: Vida Yirenkyiwaa Adjei
| | - Gloria Ivy Mensah
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Angela Parry-Hanson Kunadu
- Department of Nutrition and Food Science, School of Biological Sciences, University of Ghana, Accra, Ghana
| | - Kwaku Tano-Debrah
- Department of Nutrition and Food Science, School of Biological Sciences, University of Ghana, Accra, Ghana
| | - Irene Ayi
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Kennedy Kwasi Addo
- Department of Bacteriology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
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Li J, Ren Y, Chen H, Huang W, Feng X, Hu W. Risk Evaluation of Pathogenic Intestinal Protozoa Infection Among Laboratory Macaques, Animal Facility Workers, and Nearby Villagers From One Health Perspective. Front Vet Sci 2021; 8:696568. [PMID: 34660752 PMCID: PMC8511526 DOI: 10.3389/fvets.2021.696568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/25/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Previous epidemiological studies have confirmed non-human primates (NHPs) as reservoirs for Cryptosporidium spp. , Giardia intestinalis, and Enterocytozoon bieneusi. It highlights the possibility of interspecies transmission between humans and macaques in laboratory animal facilities. This study aimed to investigate the prevalence of pathogenic intestinal protozoan infections in macaques and humans and to determine the risk of cross-species transmission from One Health view. Materials and Methods: A total of 360 fecal samples, including 310 from the four Macaca mulatta groups, 25 from the facility workers in a laboratory animal facility, and 25 from the villagers nearby in Yongfu country, southeast China, were collected. Nested PCR assays were done for detecting protozoan pathogens from all the specimens. Furthermore, potential risk factors (gender, age, and direct contact) on the occurrence of intestinal protozoa infection among different sub-groups were evaluated. A phylogenetic and haplotype network analysis was conducted to examine the genetic structure and shared patterns of E. bieneusi and Cyclospora cayetanensis. Results: The pathogenic intestinal protozoa were detected in both human and macaque fecal samples. A total of 134 (37.2%) samples were tested positive, which included 113 (36.4%) macaques, 14 (56.0%) facility workers, and 7 (28.0%) villagers, respectively. There was no significant difference in four intestinal protozoa infections between facility workers and villagers (χ2 = 2.4, P > 0.05). However, the positive rate of pathogenic intestinal protozoa in the facility workers, who had direct contact with macaques, was significantly higher [odds ratio (OR) = 0.31, 95% confidence interval (CI): 0.09–1.00, P < 0.05).Thirty-three ITS genotypes of E. bieneusi were identified, including five known genotypes (PigEBITS7, Peru8, Henan V, D, and CM1) and six novel genotypes (MEB1–6). Seven haplotypes were identified in the network analysis from C. cayetanensis-positive samples. Meanwhile, a phylogenetic and haplotype analysis confirmed the presence of zoonotic subtypes in NHPs and humans. Conclusion: The data collected from this study confirmed a high prevalence of intestinal protozoan infection in humans and macaques. These results warrant workers of such facilities and residents to limit contact with infected animals in order to minimize related health risks. The need for comprehensive strategies to mitigate the risk of zoonotic transmission, especially from a One Health perspective, is recommended.
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Affiliation(s)
- Jian Li
- Department of Pathogen Biology, Basic Medical College, Guangxi Traditional Chinese Medical University, Nanning, China.,Department of Infectious Diseases, Huashan Hospital, State Key Laboratory of Genetic Engineering, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yijing Ren
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Haiying Chen
- Department of Pathogen Biology, Basic Medical College, Guangxi Traditional Chinese Medical University, Nanning, China
| | - Weiyi Huang
- Department of Veterinary Preventive Medicine, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Xinyu Feng
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,Joint Research Laboratory of Genetics and Ecology on Parasite-Host Interaction, Chinese Center for Disease Control and Prevention & Fudan University, Shanghai, China.,School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,One Health Center, Shanghai Jiao Tong University-The University of Edinburgh, Shanghai, China.,Department of Biology, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Wei Hu
- Department of Infectious Diseases, Huashan Hospital, State Key Laboratory of Genetic Engineering, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, Shanghai, China.,WHO Collaborating Centre for Tropical Diseases, Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,Joint Research Laboratory of Genetics and Ecology on Parasite-Host Interaction, Chinese Center for Disease Control and Prevention & Fudan University, Shanghai, China.,Department of Biology, College of Life Sciences, Inner Mongolia University, Hohhot, China
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Puente S, Morente A, García-Benayas T, Subirats M, Gascón J, González-Lahoz JM. Cyclosporiasis: a point source outbreak acquired in Guatemala. J Travel Med 2006; 13:334-7. [PMID: 17107425 DOI: 10.1111/j.1708-8305.2006.00059.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Cyclosporiasis is a disease due to Cyclospora cayetanensis, an emerging coccidian parasite first described in 1979. It is an orally transmitted disease that is more frequent in tropical and subtropical areas. Cyclospora cayetanensis has been mainly described as a cause of travelers' diarrhea. This pathogen has given rise to a number of epidemic outbreaks attributable to ingestion of imported foods, particularly from tropical areas. METHODS Descriptive study of clinical and epidemiological data of a small epidemic outbreak of C cayetanensis-induced gastroenteritis. RESULTS Seven confirmed cases of C cayetanensis among Spanish nationals who had traveled to Antigua Guatemala are described. The incubation period was 6 days. Diarrhea, asthenia, anorexia, borborygmi, flatulence, and abdominal distension were present in all cases. Fever and heart burn in 85.7%. Weight loss in 71.4%. Abdominal pain, rectal tenesmus, and nausea in 42.8%. Vomiting and eructation in 14.2%. Heart burn was a frequent symptom, a finding not often previously described. The infection was probably acquired from raspberry juice. All cases improved with trimethoprim/sulphametoxazol. CONCLUSIONS Cyclosporiasis is a cause of travelers' diarrhea. Parasitology laboratories must be advised of clinical suspicion of cyclosporiasis so that they can conduct a suitable targeted study; otherwise, false negative results may arise.
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Affiliation(s)
- Sabino Puente
- Tropical Medicine Unit, Department of Infectious Diseases, Hospital Carlos III, Madrid, Spain.
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