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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Yersinia enterocolitica subsp. enterocolitica
Categories: Zoonotic; motile
Etymology: Genus name: named after the French bacteriologist A.J.E. Yersin, who in 1894 first isolated the bacterium, which causes the plague.
Species epithet: refers to intestine and colon.
Subspecies epithet: see Species epithet.
Significance:  [Very important]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Enterobacteriales
Family
Enterobacteriaceae 
Genus
Yersinia
Type Strain: ATCC 9610 = CCUG 11291 och 12369 = NCTC 12982.
Macromorphology (smell):
 
Forms small greyish colonies, which do not produce hemolysis on blood agar.
Micromorphology: Motile rods (0.5-0.8 x 1-3 µm) with peritrichous flagella.
Gram +/Gram -:
 
G-
Metabolism: Fakultatively anaerobic
Catalase/Oxidase:+/-
Other Enzymes: Ornithine decarboxylase +, tryptophanase (-) and urease (+)
Fermentation of carbohydrates: Glucose (gas) -, Lactose -, Mannitol +, Rhamnose -, Sorbitol + och Suc +. Cf. other Yersinia spp.
Spec. Char.: Psychrotrophic
Special Media:
Yersinia enterocolitica  
Small (1-2 mm in diameter) translucent colonies, which become dark red in the centre ("bull's eye") on CIN-agar.
Reservoir: Pig
Disease:Humans: yersiniosis (food poisoning). Pig: enteritis. Ewe: abortion.
Hosts: Humans, rodents, pig, sheep
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_008800 8081 4 615 899 1c + 1c 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF366378 ATCC 9610T 1 461 

Taxonomy/phylogeny:
 
Within the genus Yersinia, 20 species have been described, all species belong to the family Enterobacteriaceae.
Legislation: Y. enterocolitica belongs to category B as a potential bioterrorism agent according to NIAID
Comment:Mannitol and a pH indicator (neutral red) are included among other components in the CIN agar
Reference(s): No. 21
Updated:2021-10-11

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

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