Streptococcus pneumoniae

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Streptococcus pneumoniae


It is gram-positive, alpha-hemolytic, bile soluble aerotolerant anaerobe and a significant human pathogenic bacterium. It was recognized as a major cause of pneumonia in the late 19th century and is the subject of many humoral immunity studies.



Scientific classification
Domain Bacteria
Phylum Firmicutes
Class Bacilli
Order Lactobacillales
Family Streptococcaceae
Genus Streptococcus
Species S. pneumoniae
Binomial Streptococcus pneumoniae



Contents

[edit] Surface Characteristics

The capsular polysaccharide in its cell wall consists of the following residues : -2)-α-D-Galp-(1-->3)-α-D-Glcp-(1-->3)-α-L-Rhap-(1-->4)-D-Rib-ol-(5-P-

[edit] Pathogenic Activity

It causes many types of pneumococcal infection other than pneumonia, including acute sinusitis, otitis media, meningitis, bacteremia, sepsis, osteomyelitis, septic arthritis, endocarditis, peritonitis, pericarditis, cellulitis, and brain abscess.

[edit] Virulence

S. pneumoniae is the most common cause of bacterial meningitis in adults and children and dogs and is one of the top two isolates found in ear infection, otitis media. Pneumococcal pneumonia is more common in the very young and the very old.

[edit] References

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