Morris I J, Ribeiro C D
Public Health Laboratory, University Hospital of Wales, Heath Park, Cardiff.
Epidemiol Infect. 1991 Aug;107(1):111-7. doi: 10.1017/s0950268800048731.
Samples of 216 pâtés were examined for the presence of Listeria spp. between May and August 1989; 35% were contaminated with L. monocytogenes, 5% of samples having counts of greater than 10(4)/g. L. innocua was recovered from 2% of samples but no other species was isolated. Five serotypes of L. monocytogenes were represented (1/2, 4b, 4b(X), 4 not 4b or 4b(X), and NT), 4b was the predominant serotype and multiple serotypes were found in eight pâtés. The incidence of contamination with L. monocytogenes was greater in stored pâté (46%) than display pâté (30%). Sampling over a 21-day period showed an apparent increase in numbers of L. monocytogenes in 6 of 7 samples with multiple serotypes represented. There was no correlation between contamination of pâté by L. monocytogenes and the presence of coliforms. Comparisons are made between the contamination of soft cheese and pâté.
1989年5月至8月期间，对216份肉酱样本进行了李斯特菌属检测；35%的样本被单核细胞增生李斯特菌污染，5%的样本计数超过10⁴/g。2%的样本中检出无害李斯特菌，但未分离出其他菌种。单核细胞增生李斯特菌有5种血清型（1/2、4b、4b(X)、4非4b或4b(X)，以及NT），4b是主要血清型，8份肉酱中发现了多种血清型。储存肉酱中单核细胞增生李斯特菌的污染发生率（46%）高于展示肉酱（30%）。在21天的采样期内，7份有多种血清型的样本中有6份单核细胞增生李斯特菌数量明显增加。肉酱被单核细胞增生李斯特菌污染与大肠菌群的存在之间没有相关性。对软奶酪和肉酱的污染情况进行了比较。
