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  2. 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 ]

  3. Streptococcus - Wikipedia

    en.wikipedia.org/wiki/Streptococcus

    S. agalactiae, or group B streptococcus, GBS, causes pneumonia and meningitis in newborns and the elderly, with occasional systemic bacteremia. Importantly, Streptococcus agalactiae is the most common cause of meningitis in infants from one month to three months old.

  4. Pneumococcal pneumonia - Wikipedia

    en.wikipedia.org/wiki/Pneumococcal_pneumonia

    Pneumococcal pneumonia is a type of bacterial pneumonia that is caused by Streptococcus pneumoniae (pneumococcus). [1] It is the most common bacterial pneumonia found in adults, the most common type of community-acquired pneumonia, and one of the common types of pneumococcal infection. The estimated number of Americans with pneumococcal ...

  5. Opportunistic infection - Wikipedia

    en.wikipedia.org/wiki/Opportunistic_infection

    Streptococcus pneumoniae is a bacterium that causes respiratory infections. [4] Streptococcus pyogenes (also known as group A Streptococcus) is a bacterium that can cause a variety of pathologies, including impetigo and strep throat, as well as other, more serious, illnesses. [18] [19]

  6. Pneumococcal infection - Wikipedia

    en.wikipedia.org/wiki/Pneumococcal_infection

    Pneumococcal infection is an infection caused by the bacterium Streptococcus pneumoniae. [1]S. pneumoniae is a common member of the bacterial flora colonizing the nose and throat of 5–10% of healthy adults and 20–40% of healthy children. [2]

  7. Quellung reaction - Wikipedia

    en.wikipedia.org/wiki/Quellung_reaction

    The quellung reaction, also called the Neufeld reaction, is a biochemical reaction in which antibodies bind to the bacterial capsule of Streptococcus pneumoniae, Klebsiella pneumoniae, Neisseria meningitidis, Bacillus anthracis, Haemophilus influenzae, [1] Escherichia coli, and Salmonella.

  8. Competence stimulating peptide - Wikipedia

    en.wikipedia.org/wiki/Competence_stimulating_peptide

    A Gram stain of the quorum-sensing Streptococcus pneumoniae. The dark purple signifies gram-positive bacteria. Competence stimulating peptides are a subset of proteins that promote quorum sensing in numerous bacterial genera including Streptococcus and Bacillus. Quorum sensing contributes to regulation of specific gene expressions in response ...

  9. Lower respiratory tract infection - Wikipedia

    en.wikipedia.org/wiki/Lower_respiratory_tract...

    [13] [15] Pneumonia is also the leading cause of death in children less than five years of age in low income countries. [15] The most common cause of pneumonia is pneumococcal bacteria, Streptococcus pneumoniae accounts for 2/3 of bacteremic pneumonias. [16] Invasive pneumococcal pneumonia has a mortality rate of around 20%. [14]

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