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  2. Streptococcus - Wikipedia

    en.wikipedia.org/wiki/Streptococcus

    Streptococcus is a genus of gram-positive or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2] Cell division in streptococci occurs along a single axis , thus when growing they tend to form pairs or chains, which may appear bent or twisted.

  3. Streptococcaceae - Wikipedia

    en.wikipedia.org/wiki/Streptococcaceae

    Streptococcaceae are a family of Gram-positive bacteria, placed within the order Lactobacillales. [1] Representative genera include Lactococcus , Lactovum , and Streptococcus . References

  4. Streptococcus pyogenes - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_pyogenes

    Streptococcus pyogenes is a species of Gram-positive, aerotolerant bacteria in the genus Streptococcus. These bacteria are extracellular , and made up of non-motile and non-sporing cocci (round cells) that tend to link in chains.

  5. Streptococcus agalactiae - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_agalactiae

    Streptococcus agalactiae (also known as group B streptococcus or GBS) is a gram-positive coccus (round bacterium) with a tendency to form chains (as reflected by the genus name Streptococcus). It is a beta- hemolytic , catalase -negative, and facultative anaerobe .

  6. Streptococcus pneumoniae - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_pneumoniae

    Streptococcus pneumoniae, or pneumococcus, is a Gram-positive, spherical bacteria, alpha-hemolytic member of the genus Streptococcus. [1] S. pneumoniae cells are usually found in pairs ( diplococci ) and do not form spores and are non motile. [ 2 ]

  7. Streptococcus salivarius - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_salivarius

    Streptococcus salivarius is a species of spherical, gram-positive, facultative anaerobic lactic acid bacteria [1] that is both catalase and oxidase negative. S. salivarius colonizes (usually in chains) the oral cavity and upper respiratory tract of humans just a few hours after birth, making further exposure to the bacteria harmless in most circumstances.

  8. Streptococcus dysgalactiae - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_dysgalactiae

    Streptococcus dysgalactiae is a gram positive, beta-haemolytic, coccal bacterium belonging to the family Streptococcaceae.It is capable of infecting both humans and animals, but is most frequently encountered as a commensal of the alimentary tract, genital tract, or less commonly, as a part of the skin flora.

  9. Group B streptococcal infection - Wikipedia

    en.wikipedia.org/wiki/Group_B_streptococcal...

    Streptococcus agalactiae is the most common human pathogen belonging to group B of the Lancefield classification of streptococci—hence the name of group B stretococcal (GBS). Infection with GBS can cause serious illness and sometimes death, especially in newborns, the elderly, and people with compromised immune systems .