Species/Subspecies: Taylorella equigenitalis
Category: Notifiable diseases and bacteria
Etymology: Genus name: named after C.E.D. Taylor, who was the first to study bacteria within this genus
Species epithet: the genitalia of the horse
Signi­ficance:  [Very important]   
Alternative Species Name(s):Haemophilus equigenitalis
Taxonomy:
Phylum
Pseudomonadota
Class
Betaproteobacteria
Order
Burkholderiales
Family
Alcaligenaceae 
Genus
Taylorella
Type Strain: 61717/77 = ATCC 35865 = CCUG 10786 = NCTC 11184.
Macromorphology (smell):
Taylorella equigenitalis  		Small (0,8-1,0 mm) white and peaked colonies
Micromorphology: Short (0,7 x 0,7-1,8 µm) nonmotile rod
Gram +/Gram -:G-
Metabolism: Mikroaerophilic
Catalase/Oxidase:+/+
Fermenta­tion of carbo­hydrates: Taylorella spp. do not ferment carbohydrates.
Spec. Char.: Optimal temperature: 37°C
Special Media:
Disease:
HostsDiseaseClinical picture
HorseCEM (Contagios Equine Metritis)Mares have discharge from the vagina and often shorter heat periods. Infected stallions show no symptoms
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP003264 ATCC 35865T 1 732 123 1c + 0 
At least two strains have been sequenced. Plasmids have not been reported.
16S rRNA Seq.:
Acc-noStrainNumber of NTOperonSequence similarity
DQ099553 ATCC 35865T 1 451 3 99.3-100% 

Taxonomy/­phylogeny:
Taylorella equigenitalis  		 Only two closely related species have been described within genus Taylorella, which is related to genus Burkholderia.
Comment:CEM is a notifiable disease in Sweden
Updated:2023-03-22