Imong S M, Rungruengthanakit K, Ruangyuttikarn C, Wongsawasdii L, Jackson D A, Drewett R F
J Trop Pediatr. 1989 Feb;35(1):14-8. doi: 10.1093/tropej/35.1.14.
Samples of weaning food and supplementary water were collected for analysis of bacterial content from among a random sample of 65 infants under the age of 1 year living in a rural area of northern Thailand. Using geometric means, mean total bacterial count of infant's drinking water was 351 organisms/ml (95 per cent CIs 170-770), and the most probable number (MPN) of faecal coliforms/ml was 47 (95 per cent CIs 19-78). Mean total bacterial count of weaning foods was 38,000 (95 per cent CIs 25,000-59,000) organisms/g with 10 per cent recording counts greater than 1,000,000 organisms/g. Bacterial counts were similar to those reported in weaning food and water in other developing countries, and were above internationally recommended 'safe' levels. The bacterial count of water was not affected by boiling, due to poor cleaning and frequent re-use of utensils. Weaning foods were contaminated during preparation, in part through premastication and also via mode of cleaning of utensils.
从泰国北部农村地区随机抽取了65名1岁以下婴儿，采集了断奶食品和补充水样本以分析细菌含量。采用几何平均数，婴儿饮用水的平均总细菌数为351个/毫升（95%置信区间为170 - 770），每毫升粪大肠菌群的最可能数（MPN）为47（95%置信区间为19 - 78）。断奶食品的平均总细菌数为38,000个/克（95%置信区间为25,000 - 59,000），10%的样本记录的细菌数大于1,000,000个/克。细菌计数与其他发展中国家报道的断奶食品和水中的细菌计数相似，且高于国际推荐的“安全”水平。由于器具清洁不善和频繁重复使用，水的细菌计数不受煮沸的影响。断奶食品在制备过程中受到污染，部分原因是预咀嚼以及器具的清洁方式。
