''Staphylococcus cornubiensis'' is a species of

Gram-positive In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. The Gram stain is ...

cocci Bacterial cellular morphologies are the shapes that are characteristic of various types of bacteria and often key to their identification. Their direct examination under a light microscope enables the classification of these bacteria (and archaea ...

in the ''Staphylococcus intermedius'' Group (SIG): a group of genetically and phenotypically similar bacterial species that were previously identified as '' S. intermedius''. The bacterium was first isolated from a human skin infection in

Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...

, United Kingdom. However, its presence in other species and/or pathologies has yet to be discussed in the literature. Another SIG bacterium, '' S. pseudintermedius,'' has also been implicated in cutaneous infections in humans–as a result of zoonotic transmission from domestic animals. The other SIG species have been isolated from various wild and domestic animals; such as dogs, cats, horses, camels, and dolphins, among others.

Discovery

''S. cornubiensis'' was first described in a 2018 paper that discussed improved methods of detecting SIG species. The sample of the bacterium was collected in Cornwall, United Kingdom from a 64-year-old man with

cellulitis Cellulitis is usually a bacterial infection involving the inner layers of the skin. It specifically affects the dermis and subcutaneous fat. Signs and symptoms include an area of redness which increases in size over a few days. The borders of ...

. Designated strain NW1, ''S. cornubiensis'' was distinguished from other samples (all identified as ''S. pseudointermedius)'' due to differences in the ''sodA'' and ''hsp60'' sequences. A following study–involving the same researchers and others–later identified NW1 as a novel species within SIG.

References

Gram-positive bacteria cornubiensis Bacteria described in 2018 {{Staphylococcaceae-stub