Serodiversity, pandemic O3:K6 clone, molecular typing, and antibiotic susceptibility of foodborne and clinical Vibrio parahaemolyticus isolates in Jiangsu, China. 2009

Guoxiang Chao, and Xinan Jiao, and Xiaohui Zhou, and Zhenquan Yang, and Jinlin Huang, and Zhiming Pan, and Liping Zhou, and Xiaoqin Qian
Yangzhou University, Yangzhou 225009, China.

Vibrio parahaemolyticus is a major foodborne pathogen in China, Japan, and other Asian countries. In this study, we collected 437 strains of V. parahaemolyticus and investigated their serotypes, distribution of virulence genes, and presence of pandemic O3:K6 clone strains. A total of 327 strains were isolated from food and 110 strains were isolated from active surveillance hospitals or food outbreaks during 2005 to 2008. Presence of the tdh and trh genes is the key characteristic of virulent strains. Positive for both the tdh gene and group-specific polymerase chain reaction is the key characteristic of pandemic strains. A total of 9 O serogroups and 62 serovars were identified in all strains. Nine O serogroups and 56 serovars existed in 327 foodborne strains, and 6 O serogroups and 20 serovars existed in 110 clinical strains. Among the 327 food isolates, 6 isolates belonged to the pandemic clone with the orf8 gene (1 isolate was O1:KUT (untyped) and 5 isolates were O3:K6) and 4 isolates carried the trh gene (2 isolates belonged to O1:KUT and 2 isolates belonged to O5:KUT and O5:K17). Seventy-nine percent of the clinical isolates were pandemic strains, 9.4% of which lacked the orf8 gene. O3:K6 was the main serovar of the pandemic strains accounting for 83.5% of the clinical pandemic strains. Pandemic clonal serovars included O3:K6, O1:KUT, O1:K25, O1:K26, and O4:K68, and the newly emerging serovars O1:K36, O3:K25, and O3:K68 identified in the current study. O3:K6 was the dominant serovar in pandemic strains. All pandemic isolates had identical arbitrarily primed polymerase chain reaction fragment patterns, but did not share similar antibiotic sensitivity patterns. These results suggest that high serodiversity of V. parahaemolyticus was present in foodborne strains. Pathogenic isolates, especially pandemic isolates, were present in high-priced iced seafood and became the potential risk factor in food.

UI MeSH Term Description Entries
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D010802 Phylogeny The relationships of groups of organisms as reflected by their genetic makeup. Community Phylogenetics,Molecular Phylogenetics,Phylogenetic Analyses,Phylogenetic Analysis,Phylogenetic Clustering,Phylogenetic Comparative Analysis,Phylogenetic Comparative Methods,Phylogenetic Distance,Phylogenetic Generalized Least Squares,Phylogenetic Groups,Phylogenetic Incongruence,Phylogenetic Inference,Phylogenetic Networks,Phylogenetic Reconstruction,Phylogenetic Relatedness,Phylogenetic Relationships,Phylogenetic Signal,Phylogenetic Structure,Phylogenetic Tree,Phylogenetic Trees,Phylogenomics,Analyse, Phylogenetic,Analysis, Phylogenetic,Analysis, Phylogenetic Comparative,Clustering, Phylogenetic,Community Phylogenetic,Comparative Analysis, Phylogenetic,Comparative Method, Phylogenetic,Distance, Phylogenetic,Group, Phylogenetic,Incongruence, Phylogenetic,Inference, Phylogenetic,Method, Phylogenetic Comparative,Molecular Phylogenetic,Network, Phylogenetic,Phylogenetic Analyse,Phylogenetic Clusterings,Phylogenetic Comparative Analyses,Phylogenetic Comparative Method,Phylogenetic Distances,Phylogenetic Group,Phylogenetic Incongruences,Phylogenetic Inferences,Phylogenetic Network,Phylogenetic Reconstructions,Phylogenetic Relatednesses,Phylogenetic Relationship,Phylogenetic Signals,Phylogenetic Structures,Phylogenetic, Community,Phylogenetic, Molecular,Phylogenies,Phylogenomic,Reconstruction, Phylogenetic,Relatedness, Phylogenetic,Relationship, Phylogenetic,Signal, Phylogenetic,Structure, Phylogenetic,Tree, Phylogenetic
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D002999 Clone Cells A group of genetically identical cells all descended from a single common ancestral cell by mitosis in eukaryotes or by binary fission in prokaryotes. Clone cells also include populations of recombinant DNA molecules all carrying the same inserted sequence. (From King & Stansfield, Dictionary of Genetics, 4th ed) Clones,Cell, Clone,Cells, Clone,Clone,Clone Cell
D005516 Food Microbiology The presence of bacteria, viruses, and fungi in food and food products. This term is not restricted to pathogenic organisms: the presence of various non-pathogenic bacteria and fungi in cheeses and wines, for example, is included in this concept. Microbiology, Food
D005517 Foodborne Diseases Acute illnesses, usually affecting the GASTROINTESTINAL TRACT, brought on by consuming contaminated food or beverages. Most of these diseases are infectious, caused by a variety of bacteria, viruses, or parasites that can be foodborne. Sometimes the diseases are caused by harmful toxins from the microbes or other chemicals present in the food. Especially in the latter case, the condition is often called food poisoning. Food Poisoning,Food-borne Disease,Food-borne Illness,Foodborne Disease,Foodborne Illness,Food-borne Diseases,Food-borne Illnesses,Foodborne Illnesses,Poisoning, Food,Disease, Food-borne,Disease, Foodborne,Food Poisonings,Food borne Disease,Food borne Diseases,Food borne Illness,Food borne Illnesses,Illness, Food-borne,Illness, Foodborne,Illnesses, Foodborne
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012703 Serotyping Process of determining and distinguishing species of bacteria or viruses based on antigens they share. Serotypings
D014644 Genetic Variation Genotypic differences observed among individuals in a population. Genetic Diversity,Variation, Genetic,Diversity, Genetic,Diversities, Genetic,Genetic Diversities,Genetic Variations,Variations, Genetic

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