Pneumococcus

Streptococcus Pneumoniae Introduction Gram-positive, α-hemolytic diplococcus. Major cause of community-acquired pneumonia, meningitis, otitis media, sinusitis, septicemia. First described by Pasteur (1881).Lancet-shaped diplococci, surrounded by a prominent capsule.Facultative anaerobe, non-motile, non-spore forming, catalase-negative. Pneumococcus Species Only