Ombui J N, Kaburia H F, Macharia J K, Nduhiu G
Department of Public Health, Pharmacology and Toxicology, College of Agriculture and Veterinary Sciences, University of Nairobi, Kenya.
East Afr Med J. 1994 Oct;71(10):635-9.
The rate of contamination with coliforms and incidence of Escherichia coli (E. coli) in raw milk supplied by farmers to dairy cooperative societies for marketing was investigated. About forty two (42.2%) percent of the milk samples from farmers cans and 10.3% of samples from cooperative cans were found to be free of coliforms, while 89.5% of the samples from farmers cans and 50% samples from cooperative cans could be considered to be of good quality with no more than 50,000 coliforms/ml of milk. Forty two E. coli strains were isolated from milk samples, five of which were found to be enteropathogenic, while none was found to be of serogroup O157. The results indicated that a good number of farmers draw milk under satisfactory conditions, but awareness campaigns on clean milking, milk handling and storage practices should be stepped up in order to reach farmers who may not be informed. Again the study showed that raw milk can get contaminated with enteropathogenic strains of E. coli that can pose a potential risk to humans, thus calling for extra care when preparing milk and milk products that are to be consumed by human beings.
对农民供应给乳制品合作社用于销售的生牛奶中大肠菌群的污染率和大肠杆菌（E. coli）的发生率进行了调查。发现约42.2%的农民罐装牛奶样本和10.3%的合作社罐装牛奶样本未检测到大肠菌群，而89.5%的农民罐装牛奶样本和50%的合作社罐装牛奶样本可被认为质量良好，每毫升牛奶中大肠菌群不超过50000个。从牛奶样本中分离出42株大肠杆菌菌株，其中5株被发现具有致病性，未发现O157血清型菌株。结果表明，许多农民在令人满意的条件下挤奶，但应加强关于清洁挤奶、牛奶处理和储存做法的宣传活动，以覆盖那些可能不了解情况的农民。此外，研究表明，生牛奶可能会被致病性大肠杆菌菌株污染，这对人类构成潜在风险，因此在制备供人类食用的牛奶和奶制品时需要格外小心。
