Staphylococcus caprae

Staphylococcus caprae is a Gram-positive, coccus bacteria and a member of the genus Staphylococcus. S. caprae is coagulase-negative. It was originally isolated from goats (caprae means "of a goat"), but members of this species have also been isolated from human samples.

Staphylococcus caprae
Scientific classification
Kingdom:
Bacteria
Phylum:
Firmicutes
Class:
Bacilli
Order:
Bacillales
Family:
Staphylococcaceae
Genus:
Staphylococcus
Species:
S. caprae
Binomial name
Staphylococcus caprae
Devriese et al. 1983

Clinical importance

S. caprae occurs as a commensal on human skin, but has also been implicated in infections of the bloodstream, urinary tract, bones, and joints. Because S. caprae is difficult to identify definitively in the laboratory,[1] according to a study in 2014, the incidence of S. caprae in humans is under-reported.[2]

Literature and further reading

It is a coagulase-negative, DNase-positive member of the genus Staphylococcus. Usually it is associated with goats. Since 1991, a few laboratories reported that they had isolated the organism from human clinical specimens.[3] It is now an emerging microorganism in joint and bone infections in humans.[4]

Staphylococcus caprae was first described in 1983 by Devisee et al. based on a strain isolated from some goat milk. It can sometimes cause mastitis in the goats, and it is considered a commensal organism for the goats’ skin and mammary glands. It has been reported as a pathogen for humans acquired at hospitals, mostly in bone and joint infections.[5] There have also been studies on S. caprae causing sepsis in clinical settings.[6]

References
  1. Carretto E; Barbarini D; Couto I; De Vitis D; Marone P; Verhoef J; De Lencastre H; Brisse S (2005). "Identification of coagulase-negative staphylococci other than Staphylococcus epidermidis by automated ribotyping". Clin Microbiol Infect. 11 (3): 177–184. doi:10.1111/j.1469-0691.2004.01052.x. PMID 15715714.
  2. Seng P, Barbe M, Pinelli PO, Gouriet F, Drancourt M, Minebois A, Cellier N, Lechiche C, Asencio G, Lavigne JP, Sotto A, Stein A. "Staphylococcus caprae bone and joint infections: a re-emerging infection?". Clin Microbiol Infect. 20 (12): O1052–8. doi:10.1111/1469-0691.12743. PMID 24975594.
  3. Human isolates of Staphylococcus caprae: association with bone and joint infections. in the Journal of Clinical Microbiology October 1997 vol. 35 no. 10 2537-2541
  4. Characterization of Staphylococcus caprae Clinical Isolates Involved in Human Bone and Joint Infections, Compared with Goat Mastitis Isolates, Journal of Clinical Microbiology January 2016 vol. 54 no. 1 106-113
  5. Characterization of Staphylococcus caprae Clinical Isolates Involved in Human Bone and Joint Infections, Compared with Goat Mastitis Isolates, Journal of Clinical Microbiology January 2016 vol. 54 no. 1 106-113
  6. Kini GD, Parris AR, Tang JS. "A Rare Presentation of Sepsis from Staphylococcus caprae". Open Microbiol J. 3: 67–8. doi:10.2174/1874285800903010067. PMC 2698425. PMID 19543552.


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