The aim of the study was to isolate and characterize Escherichia coli from finfish and shellfish. A total of 100 E. coli isolates (finfish = 42, shellfish = 58) were used in this study. Frequently encountered serotypes in shellfish and finfish were O14, O159, O23, and O5. Phylogenetic analysis revealed a significantly high prevalence of the B2 group in shellfish (p < .05), while B1 and C groups were significantly more prevalent in finfish (p < .05). The prevalence of antibiotic resistance was significantly higher in finfish isolates (85.71%), compared to shellfish isolates (31.03%). The prevalence of antibiotic resistance genes (ARGs)‐harboring E. coli was high in finfish (28.57%) compared to shellfish (15.5%). The incidence of extraintestinal pathogenic E. coli (ExPEC) was very low in seafood. Our finding suggests that seafood contaminated with E. coli strains harboring ARGs and virulence genes associated with ExPEC may have a significant health impact on consumers.

中文翻译：

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鳍鱼和贝类大肠杆菌中与ExPEC相关的遗传相关性，系统发生群，抗生素抗性和毒力基因

该研究的目的是从有鳍鱼和贝类中分离和鉴定大肠杆菌。这项研究总共使用了100种大肠杆菌分离株（鳍鱼= 42，贝类= 58）。贝类和鳍鱼中常见的血清型为O14，O159，O23和O5。系统发育分析表明，贝类中B2组的患病率显着较高（p  <.05），而鳍鱼中B1和C组的患病率则更高（p  <.05）。与贝类分离株（31.03％）相比，有鳍分离株（85.71％）的抗生素耐药性患病率明显更高。携带抗生素抗性基因（ARG）的大肠杆菌流行有鳍鱼类（28.57％）比贝类（15.5％）高。海鲜中肠外致病性大肠杆菌（ExPEC）的发生率很低。我们的发现表明，被带有ARGs和与ExPEC相关的毒力基因的大肠杆菌菌株污染的海产品可能对消费者的健康产生重大影响。