Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Pasteurella multocida subsp. multocida|
|Categories:||Zoonotic; notifiable diseases and bacteria|
|Etymology:||Genus name: named after Louis Pasteur.|
Species epithet: a lot of killing.
Subspecies epithet: see Species epithet.
|Type Strain:||ATCC 43137 = CCUG 17976 B och 43504 = NCTC 10322.|
||Small mucoid or dry colonies (1-2 mm in diameter). No hemolysis on blood agar, but some strains give a greenish decolorization.|
|Micromorphology:||Small non-motile short rods or coccoid rods (0.3-1.0 x 1.0-2.0 µm), which appear singly, in pairs or as short chains (rarely).|
|Gram +/Gram -:||G-|
|Other Enzymes:||Ornithine decarboxylase +, tryptophanase + (= indole +), urease -.|
|Biochemical Tests:||Citrate -, hydrogen sulphid (H2S) -, methyl red -, Voges-Proskauer -.|
|Fermentation of carbohydrates:||
Other carbohydrates: D-Mannose +.
Gas production: Glucose -.
|Disease:||Atrophic rhinitis in pig. Pneumonia in ruminants, pig and rodents. Hemorrhagic septicemia and mastitis in cattle. Avian pasteurellosis or avian cholera (a more serious form of avian pasteurellosis) in poultry (particularly chicken, turkey, ducks and geese).
|Hosts:||Cattle, rabbit, pig, dog, cat and birds.|
|Virulence Factors:||Dermonecrotic toxines of P. multocida subsp. multocida of capsular type A and D, which causes atrophic rhinitis in pig.|
|16S rRNA Seq.:|
||About 15 species have been described within genus Pasteurella, but the relationship between members within the closely related genera Actinobacillus, Haemophilus, Mannheimia and Pasteurella is very uncertain since none of these genera forms monophyletic clusters.|
|Comment:||Atrophic rhinitis is notifiable in Sweden. Pasteurella infections may be zoonotic and associated with cat bites. Fermentation of D-sorbitol and trehalose can be used for identification of subspecies.|
|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 VetBactPublished 2023-03-15. Read more...