Department of Comparative Animal Science,College of Life Science, Kurashiki University of Science and The Arts,Okayama,Japan.
Department of Pathobiology,School of Veterinary Medicine, Rakuno Gakuen University,Hokkaido,Japan.
Epidemiol Infect. 2019 Jan;147:e102. doi: 10.1017/S0950268819000153.
Dog treats might be contaminated with Salmonella. In Canada and the USA, outbreaks of human salmonellosis related to exposure to animal-derived dog treats were reported. Consequently, surveillance data on Salmonella contamination of dog treats have been gathered in many countries, but not in Japan. In the current study, we investigated whether dog treats in Japan were contaminated with Salmonella. Overall, 303 dog treats (of which 255 were domestically produced) were randomly collected and the presence of Salmonella investigated. Seven samples were positive for Salmonella enterica subsp. enterica. Among these isolates, three were identified as serovar 4,5,12:i:-; two were serovar Rissen; and two were serovar Thompson. All serovar 4,5,12:i:- and Thompson isolates were resistant to one or more drugs. Two serovar Rissen isolates were fully susceptible to all tested antimicrobial agents. All Salmonella isolates were susceptible to cefotaxime, ciprofloxacin and nalidixic acid. The gene blaTEM was detected in two serovar 4,5,12:i:- isolates. The blaCTX-M and blaCMY genes were not detected in any isolates. This study demonstrated that dog treats in Japan could constitute a potential source of dog and human Salmonella infections, including multidrug-resistant Salmonella isolates.
狗零食可能受到沙门氏菌污染。在加拿大和美国，有报道称人类沙门氏菌病与接触动物源性狗零食有关的暴发。因此，许多国家都收集了关于狗零食中沙门氏菌污染的监测数据，但日本没有。在本研究中，我们调查了日本的狗零食是否受到沙门氏菌污染。我们随机收集了 303 个狗零食（其中 255 个是国产的），并检测了沙门氏菌的存在。有 7 个样本呈沙门氏菌属肠亚种阳性。在这些分离株中，有 3 个被鉴定为血清型 4,5,12:i:-；2 个为里森血清型；2 个为汤普森血清型。所有血清型 4,5,12:i:-和汤普森分离株对一种或多种药物具有耐药性。2 个里森血清型分离株对所有测试的抗菌药物均完全敏感。所有沙门氏菌分离株均对头孢噻肟、环丙沙星和萘啶酸敏感。在 2 个血清型 4,5,12:i:-分离株中检测到 blaTEM 基因。任何分离株均未检测到 blaCTX-M 和 blaCMY 基因。本研究表明，日本的狗零食可能成为狗和人类沙门氏菌感染的潜在来源，包括多重耐药性沙门氏菌分离株。
