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Diseases of Swine 31-1.png
Cellular and colonial morphology of Erysipelothrix rhusiopathiae
Scientific classification
Kingdom: Bacteria
Phylum: Firmicutes
Class: Erysipelotrichia
Order: Erysipelotrichales
Family: Erysipelotrichaceae
Genus: Erysipelothrix

Erysipelothrix rhusiopathiae
Erysipelothrix tonsillarum
Erysipelothrix inopinata
Erysipelothrix larvae[1]

Erysipelothrix is a genus of bacteria containing four described species, Erysipelothrix rhusiopathiae, Erysipelothrix tonsillarum, Erysipelothrix inopinata and Erysipelothrix larvae.[1][2][3][4] Additional species have been proposed based on DNA-DNA hybridization studies[5][6] "The hallmark of Erysipelothrix is the presence of a type B cell wall, in which the peptide bridge is formed between amino acids at positions 2 and 4 of adjacent peptide side-chains and not, as in the vast majority of bacteria, between amino acids at positions 3 and 4."[3]

The best known species within the genus is Erysipelothrix rhusiopathiae, which is the cause of erysipelas of domestic pigs, poultry and other animal species. In humans, E. rhusiopathiae infections are termed erysipeloid. Erysipelothrix tonsillarum has been decribed as a pathogen for dogs and has been isolated from the tonsils of healthy pigs and cattle.[7] Disease caused by E. inopinata or E. larvae have not been described.

Bacteria of genus Erysipelothrix are straight, or slightly curved, slender, nonmotile rods which may exist singly, in V-shaped pairs, or in short chains. Some strains have a tendency to form long filaments. The bacteria are Gram-positive but can be mistaken for Gram-negative bacteria during analysis because they lose their staining easily. They are aerobic to facultatively anaerobic but not acid-fast.[8]


  1. ^ a b Parte, A.C. "Erysipelothrix". 
  2. ^ Takahashi, T., et al. (1987). Erysipelothrix tonsillarum sp. nov. isolated from tonsils of apparently healthy pigs. IJSB 37(2) 166-68.
  3. ^ a b Verbarg, S., et al. (2004). Erysipelothrix inopinata sp. nov., isolated in the course of sterile filtration of vegetable peptone broth, and description of Erysipelotrichaceae fam. nov. IJSEM 54(1) 221-25.
  4. ^ Bang, B.H.; Rhee, M.S.; Chang, D.H.; Park, D.S.; Kim, B.C. (2015). "Erysipelothrix larvae sp. nov., isolated from the larval gut of the rhinoceros beetle, Trypoxylus dichotomus (Coleoptera: Scarabaeidae)". Antonie van Leeuwenhoek. 107 (2): 443–51. doi:10.1007/s10482-014-0342-x. 
  5. ^ Takahashi, T.; Fujisawa, T.; Tamura, Y.; Suzuki, S; Muramatsu, M.; Sawada, T.; Benno, Y.; Mitsuoka, T. (1992). "DNA relatedness among Erysipelothrix rhusiopathiae strains representing all twenty-three serovars and Erysipelothrix tonsillarum". International Journal of Systematic Bacteriology. 42 (3): 469–473. 
  6. ^ Takahashi, Toshio; Fujisawa, Tomohiko; Umeno, Annu; Kozasa, Takashi; Yamamoto, Kinya; Sawada, Takuo (2008). "A taxonomic study on erysipelothrix by DNA-DNA hybridization experiments with numerous strains isolated from extensive origins". Microbiology and Immunology. 52 (10): 469–478. doi:10.1111/j.1348-0421.2008.00061.x. 
  7. ^ Takahashi, T; Tamura, Y; Yoshimura, H; Nagamine, N; Kijima, M; Nakamura, M; Devriese, LA (March 1993). "Erysipelothrix tonsillarum isolated from dogs with endocarditis in Belgium". Research in veterinary science. 54 (2): 264–5. PMID 8460272. 
  8. ^ Stackebrandt, E., et al. (2006). The Genus Erysipelothrix. Prokaryotes 4 492-510.

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