Eggerthella

Eggerthella is a bacterial genus of Actinomycetota, in the family Coriobacteriaceae. Members of this genus are anaerobic, non-sporulating, non-motile, Gram-positive bacilli that grow singly, as pairs, or in short chains. They are found in the human colon and feces and have been implicated as a cause of ulcerative colitis, liver and anal abscesses and systemic bacteremia.^[3][4]

Eggerthella
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Actinomycetota
Class:	Coriobacteriia
Order:	Eggerthellales
Family:	Eggerthellaceae
Genus:	Eggerthella Wade et al., 1999[1]
Type species
Eggerthella lenta (Eggerth 1935) Wade et al. 1999
Species[2]
E. guodeyinii "E. hominis" E. lenta E. sinensis E. timonensis

The type strain for this genus, Eggerthella lenta, was known as Eubacterium lentum prior to 1999.^[5][6] The genus is named for Arnold Eggerth, who first described the organism in 1935.^[7]

Eggerthella has not been characterized well because of identification difficulties. Only 9 case reports involving Eggerthella bacteremia had been published prior to 2014. It is "most commonly associated with intra-abdominal infections, which are often polymicrobial."^[8]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)^[1] and National Center for Biotechnology Information (NCBI).^[2]

16S rRNA based LTP_10_2024[9][10][11]	120 marker proteins based GTDB 09-RS220[12][13][14]
Eggerthella E. sinensis E. timonensis E. guodeyinii E. lenta	Eggerthella E. sinensis Lau et al. 2006 E. lenta (Eggerth 1935) Wade et al. 1999 E. guodeyinii Ge et al. 2021 E. timonensis Bilen et al. 2023

See also

• List of bacterial vaginosis microbiota
• List of bacteria genera
• List of bacterial orders