Bacterial hazard identification and exposure assessment of raw milk consumption in Jimma zone, South West Ethiopia.

BACKGROUND: Raw milk may contain pathogenic microorganism that can sometimes fatally affect the health of consumers. However, risks related to raw milk consumption in Southwest Ethiopia are not well studied. The aim of this study was to evaluate the presence of five target pathogenic bacteria including Escherichia coli O157:H7, Salmonella enterica Typhimurium, Staphylococcus aureus, Listeria monocytogenes, and Campylobacter jejuni in raw milk and to assess exposure associated with the consumption of raw milk. METHOD: A cross-sectional study was carried out between November 2019 and June 2020 to in Jimma zone, Southwest Ethiopia. Laboratory analysis was conducted on milk samples collected from Seven Woreda towns, including, Agaro, Yebu, Sekoru, Serbo, Shebe, Seka, Sheki and Jimma town administration. Semi-structured interview questions were administered to collect data on the amount and frequency of consumption. Descriptive statistics were used to summarize laboratory results and questionnaire survey data. RESULT: Among 150 total raw milk samples, about 61.3% were found contaminated by one or more types of pathogens along the dairy value chain. The highest and the least bacterial counts recorded were 4.88 log10cfu/ml and 3.45 log10cfu/ml from E. coli and L. monocytogenes respectively. The mean concentrations of pathogens demonstrated significant statistical difference (p < 0.05) using 95% confidence interval where the prevalence percentage of isolates increased as the milk was transported from farms to the retail outlets. Except for C. jejuni; all other pathogens were detected in the range of unsatisfactory level of milk microbiological quality along the chain. The estimated mean annual risk of acquiring intoxication of E. coli across retailer outlets is 100% whereas salmonellosis, S. aureus intoxication, and listeriosis are 84%, 65% and 63% respectively. CONCLUSION: The study highlights the significant health risks associated with the consumption of raw milk due to its unacceptable microbiological quality. The traditional production and consumption patterns of raw milk are the primary reasons for the high annual probability of infection. Therefore, regular monitoring and implementation of hazard identification and critical control point principles are necessary from raw milk production to retail points to ensure the safety of consumers.

Determinants of acute respiratory infection (ARI) among under-five children in rural areas of Legambo District, South Wollo Zone, Ethiopia: A matched case-control study.

BACKGROUND: Acute respiratory infection (ARI) leads to morbidity and mortality among under-fivechildren in developing countries, especially in rural settings. ARI ranks among the top 10 diseases in under-five children in Legambo District, South Wollo Zone, Ethiopia. The aim of this study was to evaluate determinant factors for ARI in Legambo District in 2019. MATERIALS AND METHODS: A community-based matched case-control study was conducted, involving 139 cases and 278 controls under 5 years of age, from mid-January to mid-February 2019. Data were collected using a structured questionnaire. Bivariate and multivariable conditional logistic regression analyses were performed. From the multivariable conditional logistic regression analysis, variables with a significance level of p < 0.05 were taken as significantly associated with ARI among under-five children. RESULT: ARI among children under 5 years of age was significantly associated with age of the mother/caregiver being ≥35 years, occupation of mother/caregiver being housewife, the family being of medium wealth status, the type of stove used in the house, carrying the child while preparing food, absence of windows in the house, and nutritional status of the child. CONCLUSION: The occurrence of ARI could be reduced by improving economic status, stove use, and nutrition of children, and by increasing community awareness regarding indoor air pollution and ventilation.