Listeria species in retail smoked fish at Jos, Nigeria

Animal Production Research Advances Pub Date : 2007-08-03 DOI:10.4314/APRA.V2I4.36349

C. O. Chukwu, D. Ehizibolo, I. A. Mustapha, I. Chukwu, O. Olabode, C. Ogbonna

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Abstract

The prevalence of Listeria species in 65 samples of smoked fish at the retail markets in Jos, Nigeria, is reported. The experimental samples which included 30 catfish (Clarias species) and 35 Tilapia were screened for Listeria monocytogenes and other Listeria species using a two-step enrichment method. Total Listeria species demonstrated were 14(21.5%), out of which 6(9.2%) were Listeria monocytogenes . There was no statistical difference (p>0.05) between the prevalence rates of L. monocytogenes in the catfish (13.3%) and Tilapia (5.7%). The prevalence rates at Bukuru, K-Vom and Vwang retail markets were 6.9%, 5.6% and 16.7% respectively for L. monocytogenes , and 13.8%, 11.1% and 11.1% respectively for other Listeria species. These rates were not significantly different across the different sites (p>0.05). This study yields valuable baseline information on the prevalence of L. monocytogenes and other Listeria species in cold-smoked fish in Nigeria. Continual surveillance for possible fish-borne listeriosis and other foodborne diseases in the area is recommended. Keywords Listeria species, foodborne disease, smoked fish, retail market, Nigeria > Animal Production Research Advances Vol. 2 (4) 2006: pp. 231-234

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尼日利亚乔斯零售熏鱼中的李斯特菌种类

据报道，尼日利亚乔斯零售市场的65份熏鱼样本中存在李斯特菌。采用两步富集法对30条鲶鱼(Clarias属)和35条罗非鱼进行了单增李斯特菌和其他李斯特菌的筛选。共检出李斯特菌14种(21.5%)，其中单核增生李斯特菌6种(9.2%)。鲶鱼(13.3%)与罗非鱼(5.7%)的单核细胞增生乳杆菌患病率差异无统计学意义(p < 0.05)。Bukuru、K-Vom和Vwang零售市场单增李斯特菌感染率分别为6.9%、5.6%和16.7%，其他李斯特菌感染率分别为13.8%、11.1%和11.1%。这些比率在不同部位间无显著差异(p < 0.05)。这项研究提供了尼日利亚冷熏鱼中单核细胞增生李斯特菌和其他李斯特菌流行率的宝贵基线信息。建议继续监测该地区可能的鱼媒李斯特菌病和其他食源性疾病。关键词李斯特菌，食源性疾病，熏鱼，零售市场，尼日利亚>动物生产研究进展Vol. 2 (4) 2006: pp. 231-234

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Animal Production Research Advances

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