Streptococcus pneumoniae

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streptococcus-pneumoniae

Gram-positive, encapsulated, alpha-hemolytic diplococci. Leading cause of community-acquired pneumonia and bacterial meningitis in adults globally. >100 serotypes defined by polysaccharide capsule; preventable with PCV13 and PPSV23 vaccines.

Entry Metadata

Field	Value
ID	streptococcus-pneumoniae
Name	Streptococcus pneumoniae
Status	draft
Last reviewed	2026-06-04
Class	02-bacteria
Family	Streptococcaceae
Genus	Streptococcus

Cross-Atlas Connections

infectsLung infectsRespiratory System damagesRespiratory System infectsImmune System target-ofImmunoglobulin G treated-byAmoxicillin

Sources

Tillett WS, Francis T Jr. Serological reactions in pneumonia with a non-protein somatic fraction of pneumococcus. J Exp Med. 1930;52(4):561-71. · PubMed 19869631
Klugman KP. Pneumococcal resistance to antibiotics. Clin Microbiol Rev. 2002;15(4):716-22. (See also: Klugman KP. Pneumococcal resistance to antibiotics. N Engl J Med. 2002.)
Bonten MJ, Huijts SM, Bolkenbaas M, et al. Polysaccharide conjugate vaccine against pneumococcal pneumonia in adults. N Engl J Med. 2015;372(12):1114-25. (CAPiTA trial)