Veterinary bacteriology: information about important bacteria
|Categories:||Zoonotic; notifiable diseases and bacteria|
|Etymology:||Genus name: named after Sir David Bruce, who first identified the organism, which causes brucellosis. |
Species epithet: Refers to the island of Malta (Melita), where the organism was first found.
|Type Strain:||16M = ATCC 23456 = NCTC 100|
|Macromorphology (smell):||Pale honey coloured transparant colonies, which do not give hemolysis on blood agar.|
|Micromorphology:||Non-motile cocci or short rods|
|Gram +/Gram -:||G-|
|Other Enzymes:||Urease +|
|Fermentation of carbohydrates:||Most Brucella spp. do not produce acid by fermentation of carbohydrates.|
|Disease:||Brucellosis. Malta fever. The disease is a zoonosis.
Totally two strains have been sequenced, but plasmids have not been reported.
|16S rRNA Seq.:|
||About 25 species have been described within genus Brucella and this genus is closely related to genus Bartonella. From a phylogenetic point of view, B. abortus, B. canis, B. ceti, B. melitensis, B. neotome, B. ovis, B. pinnipedialis and B. suis represent the same species (B. melitensis), but due to different host specificities, they have been affiliated with different species.|
|Legislation:||Brucella melitensis belongs to category B as a potential bioterrorism agent according to NIAID.|
|Comment:||May penetrate intact skinn. in Sweden brucellosis is notifiable to the Swedish Board of Agriculture and is governed by the epizootic diseases law.|
|Link:||Epiwebb - om epizootisjukdomar [in Swedish]|
|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...