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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 ]
Streptococcus pneumoniae is the most common bacterial cause of pneumonia in all age groups except newborn infants. Streptococcus pneumoniae is a Gram-positive bacterium that often lives in the throat of people who do not have pneumonia. Other important Gram-positive causes of pneumonia are Staphylococcus aureus and Bacillus anthracis.
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.
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 ...
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 ]
Transformation among gram-positive bacteria has been studied in medically important species such as Streptococcus pneumoniae, Streptococcus mutans, Staphylococcus aureus and Streptococcus sanguinis and in gram-positive soil bacteria Bacillus subtilis and Bacillus cereus. [23]
Group A strep, aka group A Streptococcus, is a bacteria that can cause a range of infections, according to the CDC. Those include strep throat, impetigo, and cellulitis. Those include strep throat ...
Pneumolysin is a virulence factor of the Gram-positive bacteria Streptococcus pneumoniae. [1] It is a pore-forming toxin of 53 kDa composed of 471 amino acids. [2] It has a range of biological activity, including the ability to lyse [3] and interfere with the function of cells and soluble molecules of the immune system. [4]