Although carbapenem use is prohibited in animals in China,carbapenem-resistant Escherichia coli(CREC),especially New Delhi metallo-β-lactamase(NDM)-producing strains,are widely prevalent in food-producing animals.At present,the impact of livestock-associated CREC strains on human populations at the national level is unknown.Here,we conduct a retrospective cross-sectional study to investigate the prevalence of CREC from clinical settings across 22 Chinese provinces or municipalities and analyze anthropogenic factors associated with their presence.We also ascertain the blaNDM and blaKPC abundance among pig and chicken farms and present a detailed genomic framework for CREC of animal and human origin.Overall,631/29 799(2.1％)clinical Escherichia coli(E.coli)isolates were identified as CREC.Multivariable analysis revealed that being male,an age below 1,an age between 13 and 18,provinces with greater chicken production,and provinces with higher pig production were associated with higher odds of CREC infection.In general,73.8％(n=45/61)of pig farms and 62.2％(n=28/45)of chicken farms had a blaNDM abundance of 1 x 10-5 to 1×10-3 and 1 x 10-3 to 1×10-2,respectively.Among all the Chinese NDM-positive E.coli(n=463)available at the National Center for Biotechnology Information(NCBI),the genomic analysis revealed that blaNDM-5 and IncX3 were the predominant carbapenemase gene-plasmid combination,while a highly homogeneous relationship between NDM-positive isolates from humans and animals was demonstrated at the plasmid and core genome levels.All the findings sug-gest frequent CREC transmission between humans and animals,indicating that further discussions on the use of antibiotics in animals and humans are needed,both in China and across the globe.

Yingbo Shen;Fupin Hu;Yongqiang Wang;Dandan Yin;Lu Yang;Yiqiang Chen;Chunyan Xu;Jiyun Li;Junyao Jiang;Xueyang Wang;Yulin Fu;Dongyan Shao;Dejun Liu;Tengfei Ma;Chang Cai;Zhangqi Shen;Shaolin Wang;Juan Li;Rong Zhang;Yuebin Ke;Congming Wu;Jianzhong Shen;Timothy R.Walsh;Yang Wang

Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety,College of Veterinary Medicine,China Agricultural University,Beijing 100193,China;CAS Key Laboratory of Pathogenic Microbiology and Immunology,Institute of Microbiology,Chinese Academy of Sciences,Beijing 100101,China;Institute of Antibiotics&Key Laboratory of Clinical Pharmacology of Antibiotics(MoH),Huashan Hospital,Fudan University,Shanghai 200040,China;Department of Preventive Veterinary Medicine,College of Veterinary Medicine,China Agricultural University,Beijing 100193,China;State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China;College of Animal Science and Technology,College of Veterinary Medicine,Zhejiang A and F University,Hangzhou 311300,China;State Key Laboratory for Infectious Disease Prevention and Control,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease,National Institute for Communicable Disease Control and Prevention,Chinese Center for Disease Control and Prevention(CDC),Beijing 102206,China;The Second Affiliated Hospital of Zhejiang University,Zhejiang University,Hangzhou 310009,China;Key Laboratory of Genetics&Molecular Medicine of Shenzhen,Shenzhen Center for Disease Control and Prevention,Shenzhen 518055,China;Department of Zoology,University of Oxford,Oxford OX1 3SZ,UK

工程（英文）

[1]Yingbo Shen;Fupin Hu;Yongqiang Wang;Dandan Yin;Lu Yang;Yiqiang Chen;Chunyan Xu;Jiyun Li;Junyao Jiang;Xueyang Wang;Yulin Fu;Dongyan Shao;Dejun Liu;Tengfei Ma;Chang Cai;Zhangqi Shen;Shaolin Wang;Juan Li;Rong Zhang;Yuebin Ke;Congming Wu;Jianzhong Shen;Timothy R.Walsh;Yang Wang-.Transmission of Carbapenem Resistance Between Human and Animal NDM-Positive Escherichia coli Strains)[J].工程（英文）,2022(08):24-33

Transmission,Carbapenem,Resistance,Between,Human,Animal,Positive,Escherichia,coli,Strains,Although,use,prohibited,animals,China,resistant,CREC,especially,New,Delhi,metallo,lactamase,producing,strains,are,widely,prevalent,food,At,present,impact,livestock,associated,populations,national,unknown,Here,conduct,retrospective,sectional,study,investigate,prevalence,from,clinical,settings,across,Chinese,provinces,municipalities,analyze,anthropogenic,factors,their,presence,We,also,ascertain,blaNDM,blaKPC,abundance,among,pig,chicken,farms,detailed,genomic,framework,origin,Overall,isolates,were,identified,Multivariable,analysis,revealed,that,being,male,age,below,between,greater,production,higher,odds,infection,general,had,respectively,Among,positive,available,National,Center,Biotechnology,Information,NCBI,IncX3,predominant,carbapenemase,plasmid,combination,while,highly,homogeneous,relationship,humans,was,demonstrated,core,genome,levels,All,findings,sug,gest,frequent,transmission,indicating,further,discussions,antibiotics,needed,both,globe

0.55935