VetBact logo


Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology

Species/Subspecies: Campylobacter hyointestinalis subsp. hyointestinalis
Categories: Causes hemolysis; motile
Etymology: Genus name: a curved rod.
Species epithet: from a hog's intestine.
Subspecies epithet: see Species epithet.
Significance:  [Of minor importance]   
Type Strain: 80-4577-4 = ATCC 35217= CCUG 14169 = NCTC 11608.
Macromorphology (smell): Small circular and convex colonies (1.5-2.0 mm in diameter) after 48 h. Many strains give hemolysis on blld agar.
Micromorphology: Loosely spiraled and bent rods (0.2-0.5 x 1.2-2.5 µm) with darting motility by means of a polar flagellum.
Gram +/Gram -:G -
Metabolism: Microaerophilic
Other Enzymes: Hippuricase - (hippurat -), urease -
Biochemical Tests: Hydrogen sulfide (H2S) (+)
Fermentation of carbohydrates: Campylobacter spp. can neither ferment nor oxidize carbohydrates.
Spec. Char.:
Reservoir: Cattle, pigs, hamster, deer and humans.
Disease:The bacterium has been isolated from the intestine of animals and from feces of humans. Some researchers consider it to be associated with porcine proliferative enteritis and dirrhea in animals and humans. However, pathogenicity has not been proved.
Hosts: Pigs? and humans?
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF097689 NCTC 11608T 1423  

About 40 species have been described within in the genus Campylobacter and some of these are further divided into subspecies. This genus is closely related to the following genera: Sulfurospirillum, Arcobacter and Helicobacter. C. hyointestinalis is closely related to C. fetus and C. coli.


New names of bacterial phyla

The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.

Published 2023-03-01. Read more...
The taxonomy of chlamydias

Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBact

Published 2023-03-15. Read more...

Recently Updated

Recent blog posts

Most recent comment

Swedish University of Agricultural Sciences