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Streptococcus

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Streptococcus

Scientific classification
Kingdom:	Bacteria
Phylum:	Firmicutes
Class:	Bacilli
Order:	Lactobacillales
Family:	Streptococcaceae
Genus:	Streptococcus Rosenbach, 1884
Species
S. agalactiae S. anginosus S. bovis S. canis S. constellatus S. dysgalactiae S. equi S. equinus S. iniae S. intermedius S. mitis S. mutans S. oralis S. parasanguinis S. peroris S. pneumoniae S. pyogenes S. ratti S. salivarius S. salivarius ssp. thermophilus S. sanguinis S. sobrinus S. suis S. uberis S. vestibularis S. viridans S. zooepidemicus

Streptococcus is a genus of spherical Gram-positivebacteria belonging to the phylumFirmicutes and thelactic acid bacteria group. They arecocci, meaning that they are shaped likespheres orcircles.Cellular division occurs along a single axis in these bacteria, and thus they grow in chains or pairs, hence the name fromGreek στρεπτοςstreptos, meaning easily bent or twisted, like a chain (twisted chain). Contrast this withstaphylococci, which divide along multiple axes and generate grape-like clusters ofcells. Streptococci are oxidase and catalase-negative, and many are facultative anaerobes.

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Bacterial skin disease

Staphylococcus	Impetigo Toxic shock syndrome Staphylococcal scalded skin syndrome
Streptococcus	Impetigo Scarlet fever Cutaneous group B streptococcal infection Streptococcal intertrigo CutaneousStreptococcus iniae infection Erysipelas /Chronic recurrent erysipelas
Corynebacterium	Erythrasma
Clostridium	Gas gangrene Dermatitis gangrenosa
Others	Listeriosis Erysipeloid of Rosenbach Mycoplasma

Mycobacterium-
related

Others

Alpha	Endemic typhus Epidemic typhus Scrub typhus North Asian tick typhus Queensland tick typhus Flying squirrel typhus Trench fever Bacillary angiomatosis African tick bite fever American tick bite fever Rickettsia aeschlimannii infection Rickettsialpox Rocky Mountain spotted fever Human granulocytotropic anaplasmosis Human monocytotropic ehrlichiosis Flea-borne spotted fever Japanese spotted fever Mediterranean spotted fever Flinders Island spotted fever Verruga peruana Brill–Zinsser disease Brucellosis Cat-scratch disease Oroya fever Ehrlichiosis ewingii infection
Beta	Gonococcemia/Gonorrhea/Primary gonococcal dermatitis Melioidosis CutaneousPasteurella hemolytica infection Meningococcemia Glanders Chromobacteriosis infection
Gamma	Pasteurellosis Tularemia Vibrio vulnificus Rhinoscleroma Haemophilus influenzae cellulitis Pseudomonal pyoderma /Pseudomonas hot-foot syndrome /Hot tub folliculitis /Ecthyma gangrenosum /Green nail syndrome Q fever Salmonellosis Shigellosis Plague Granuloma inguinale Chancroid Aeromonas infection

Campylobacterota

Helicobacter cellulitis

Other

Unspecified
pathogen

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Gram-positive bacteria

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