PDF(Pubmed)
Abstract：
Seasonal fluctuations influence foodborne illness transmission and affect patterns of microbial contamination of food. Previous investigations on the seasonality of Salmonella enterica prevalence in dairy products in Ethiopia have been minimal. However, such data are needed to inform strategic development of effective interventions to improve food safety, as seasonal differences may affect intervention strategies. This study was conducted to identify differences in the prevalence of Salmonella in milk and cheese samples between wet and dry seasons. A longitudinal study design was utilized with a random sampling occurring during both dry and wet seasons. A total of 448 milk and cottage cheese samples were collected from Oromia, Sidama, and Amhara regions. Samples were tested for Salmonella using the ISO 6579-1: 2008 method, followed by PCR confirmation. A chi-square test was conducted to assess the significance of differences in the prevalence of Salmonella in the samples between the two seasons. Results from this study showed a higher prevalence of Salmonella in all sample types during the dry season (P < 0.05). Moreover, when comparing raw milk, pasteurized milk, and cottage cheese samples, a significant difference was observed in Salmonella prevalence from raw milk samples (27.08%) collected in the Oromia region. Additionally, data showed a significantly higher prevalence of Salmonella in samples collected from raw milk producers (29.17%) during the wet season (P < 0.05). This study indicates that in order to enhance the safety of dairy products in Ethiopia, comprehensive, long-term awareness building on hygienic milk production and handling that consider seasonal influence is warranted.
UNASSIGNED: The online version contains supplementary material available at 10.1186/s40550-024-00108-4.
UNASSIGNED: The online version contains supplementary material available at 10.1186/s40550-024-00108-4.
摘要：
季节性波动会影响食源性疾病的传播并影响食品的微生物污染模式。以前对埃塞俄比亚乳制品中沙门氏菌流行的季节性调查很少。然而,需要这些数据来为改善食品安全的有效干预措施的战略发展提供信息，因为季节性差异可能会影响干预策略。进行这项研究是为了确定潮湿和干燥季节之间牛奶和奶酪样品中沙门氏菌的患病率差异。采用纵向研究设计，并在旱季和雨季进行随机抽样。总共从Oromia收集了448个牛奶和奶酪样品，西达玛,和阿姆哈拉地区。使用ISO6579-1:2008方法对样品进行沙门氏菌检测，然后进行PCR确认。进行了卡方检验，以评估两个季节之间样品中沙门氏菌患病率差异的显着性。这项研究的结果表明，在旱季所有样本类型中沙门氏菌的患病率较高（P<0.05）。此外，当比较生牛奶时，巴氏杀菌牛奶,和奶酪样本，在Oromia地区收集的原料奶样本中观察到沙门氏菌患病率存在显著差异(27.08%).此外,数据显示，在雨季期间，从原料奶生产商收集的样本中沙门氏菌的患病率明显更高（29.17％）（P<0.05）。这项研究表明，为了提高埃塞俄比亚乳制品的安全性，全面,考虑到季节性影响，必须建立对卫生牛奶生产和处理的长期认识。
■在线版本包含10.1186/s40550-024-00108-4提供的补充材料。
■在线版本包含10.1186/s40550-024-00108-4提供的补充材料。
