Taulo Steven, Wetlesen Anne, Abrahamsen Roger, Kululanga Grant, Mkakosya Rajab, Grimason Anthony
Department of Environmental Health, University of Malawi, The Polytechnic, P/B 303, Chichiri, Blantyre 3, Malawi.
Int J Food Microbiol. 2008 Jul 15;125(2):111-6. doi: 10.1016/j.ijfoodmicro.2008.02.025. Epub 2008 Mar 4.
The presence of food-borne pathogens, Escherichia coli 0157:H7, Staphylococcus aureus, Salmonella species, Campylobacter jejuni and non-pathogenic E. coli, in 132 home cooked food samples consisting of maize flour porridge (MFP), (n=41), fish (n=37), vegetables (n=28), beans (n=13) and "Others" (n=13), collected from 6 villages in Lungwena, Malawi was investigated. It was found that 35% of the food samples were contaminated with one or more pathogens; with 48%, 8%, 61% and 23% of the food samples being found to harbour E. coli, pathogenic E. coli 0157: H7, S aureus and Salmonella species, respectively. C. jejuni was not detected in any food sample. Using a 95% level of significance, pathogen concentration among food categories demonstrated a statistical difference (p=0.001). Distribution of pathogens among villages was also found to be significant (p=0.03). MFP was the most contaminated food. Practices that promote the spread of the pathogens in the rural household kitchens were investigated. Food was thought to be contaminated as a result of poor food handling, preparation and storage practices.
对从马拉维隆韦纳的6个村庄采集的132份家庭烹饪食品样本进行了调查，这些样本包括玉米粉粥（MFP，n = 41）、鱼（n = 37）、蔬菜（n = 28）、豆类（n = 13）和“其他”（n = 13），检测其中食源性病原体大肠杆菌O157:H7、金黄色葡萄球菌、沙门氏菌属、空肠弯曲菌和非致病性大肠杆菌的存在情况。结果发现，35%的食品样本被一种或多种病原体污染；分别有48%、8%、61%和23%的食品样本中检测到大肠杆菌、致病性大肠杆菌O157:H7、金黄色葡萄球菌和沙门氏菌属。在任何食品样本中均未检测到空肠弯曲菌。在95%的显著水平下，食品类别中的病原体浓度显示出统计学差异（p = 0.001）。还发现病原体在各村庄中的分布也具有显著性（p = 0.03）。玉米粉粥是污染最严重的食品。对农村家庭厨房中促进病原体传播的行为进行了调查。食品被认为是由于不良的食品处理、制备和储存行为而受到污染的。
