Streptococcus Pneumoniae | medical microbiology lectures |

Streptococcus pneumoniae is high on the list of significant human pathogens, a unique species that was formerly called Diplococcus until its genetic similarity to the streptococci was demonstrated.
S. pneumoniae is also referred to as the pneumococcus. This bacterium is involved in 60% to 70% of bacterial pneumonias, which primarily affect immunocompromised patients
Pneumococci are gram-positive lancet-shaped cocci arranged in pairs (diplococci) or short chains. (The term lancet-shaped means that the diplococci are oval with somewhat pointed ends rather than being round.)
Non-spore forming
Non motile
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