College of Light Industry and Food Sciences, South China University of Technology, 510640 Guangzhou, PR China.
Int J Food Microbiol. 2010 Oct 15;143(3):230-4. doi: 10.1016/j.ijfoodmicro.2010.07.034. Epub 2010 Aug 6.
A total of 387 retail meat, seafood and milk powder samples were collected from nine cities in northern China in 2005 and screened for the presence of Salmonella. Salmonella strains isolated were subjected to serotyping and antimicrobial susceptibility testing. Salmonella was isolated from 81 (20.9%, 81/387) samples and classified into 23 serotypes. The isolates were frequently resistant to sulfamethoxazole (86.4%), sulfamethoxazole/trimethoprim (48.1%), nalidixic acid (30.9%), tetracycline (19.8%), carboxybenzylpenicillin (17.3%), amoxicillin (17.3%) and ampicillin (16.0%). The multiple resistance (resistance to ≥ 3 antibiotics) was found in 29.6% (n = 24) isolates. Additionally, 4 isolates from chicken displayed the ACSSuTNx profile, resistant to ampicillin, chloramphenicol, streptomycin, sulfonamide, tetracycline and nalidixic acid, in particular, strain HBS084 showing the resistance to as many as 20 antibiotics. Salmonella from chicken showed the higher frequency of antimicrobial resistance. Our findings indicate that in northern China food products of animal origin can be a source of exposure for consumers to multiresistant Salmonella strains.
2005 年，从中国北方九个城市采集了 387 份零售肉、海鲜和奶粉样本，以检测沙门氏菌的存在。对分离出的沙门氏菌菌株进行血清型鉴定和抗菌药物敏感性试验。从 81 份（387 份的 20.9%，81/387）样品中分离出沙门氏菌，并分为 23 个血清型。这些分离株经常对磺胺甲恶唑（86.4%）、磺胺甲恶唑/甲氧苄啶（48.1%）、萘啶酸（30.9%）、四环素（19.8%）、羧苄西林（17.3%）、阿莫西林（17.3%）和氨苄西林（16.0%）耐药。29.6%（24/81）的分离株表现出多重耐药性（对≥3 种抗生素耐药）。此外，4 株来自鸡肉的分离株显示出 ACSSuTNx 图谱，对氨苄西林、氯霉素、链霉素、磺胺类药物、四环素和萘啶酸耐药，特别是 HBS084 株对多达 20 种抗生素耐药。来自鸡肉的沙门氏菌表现出更高的抗菌药物耐药频率。我们的研究结果表明，在中国北方，动物源性食品可能是消费者接触多耐药沙门氏菌的来源。
