Streptococcus porcinus
| Streptococcus porcinus | |
|---|---|
Scientific classification 
| |
| Domain: | Bacteria |
| Kingdom: | Bacillati |
| Phylum: | Bacillota |
| Class: | Bacilli |
| Order: | Lactobacillales |
| Family: | Streptococcaceae |
| Genus: | Streptococcus |
| Species: | S. porcinus
|
| Binomial name | |
| Streptococcus porcinus Elliott et al. 1966
| |
Streptococcus porcinus is a species of Gram-positive bacterium in the genus Streptococcus. It was first described in 1966 following its isolation from pigs, where it was associated with a variety of suppurative infections. The species name refers to its porcine origin.
Ecology and host range
[edit]S. porcinus was originally isolated from pigs, but subsequent studies have detected it in a broad range of hosts, including cattle, sheep, goats, and occasionally humans. In animals, it has been isolated from abscesses, lymphadenitis, and genitourinary infections. In humans, it is a rare cause of disease but has been isolated from throat swabs, wound infections, and occasionally from invasive infections such as endometritis and neonatal sepsis.[1]
Differentiation
[edit]S. porcinus is classified within the pyogenic streptococci and is most commonly associated with Lancefield group E antigens, though some strains may express group P or U antigens. It may be misidentified as Streptococcus agalactiae (group B streptococcus) due to some overlapping phenotypic traits; however, molecular methods and full biochemical profiles allow for accurate identification.[2]
Clinical relevance
[edit]In swine, S. porcinus has been associated with cervical abscesses, reproductive tract infections, and septicemia. In humans, infections are rare but may include pharyngitis, abscess formation, and postpartum infections. Its pathogenic potential in humans is still considered opportunistic.[3]
Type strain
[edit]The type strain of S. porcinus is NCTC 10999 (= ATCC 43138, DSM 20725, CIP 103218, CCM 6043, CCUG 27628).
References
[edit]- ^ Devriese, LA; Hommez, J; Kilpper-Bälz, R; Schleifer, KH (1992). "Streptococcus porcinus sp. nov., a streptococcal species from pigs". International Journal of Systematic Bacteriology. 42 (4): 542–545. doi:10.1099/00207713-42-4-542.
- ^ Facklam, R; Elliott, JA (2002). "Identification, classification, and clinical relevance of Streptococcus species". Clinical Microbiology Reviews. 15 (3): 613–630. doi:10.1128/CMR.15.3.613-630.2002.
- ^ Duarte, RS; Bellei, BC; Miranda, OP; Brito, MA; Teixeira, LM (2005). "Phenotypic and molecular characterization of Streptococcus porcinus isolates from humans". Journal of Clinical Microbiology. 43 (9): 4592–4596. doi:10.1128/JCM.43.9.4592-4596.2005. PMID 16145141.