TY - CHAP M1 - Book, Section TI - Pneumococcal Infections A1 - Kasper, Dennis L. A1 - Fauci, Anthony S. A1 - Hauser, Stephen L. A1 - Longo, Dan L. A1 - Jameson, J. Larry A1 - Loscalzo, Joseph Y1 - 2016 N1 - T2 - Harrison's Manual of Medicine, 19e AB - Streptococcus pneumoniae (the pneumococcus) is a gram-positive coccus that grows in chains, causes α-hemolysis on blood agar, is bile soluble, and is sensitive to optochin.Nearly every clinical isolate has a polysaccharide capsule that protects the bacteria from phagocytosis in the absence of type-specific antibody; 93 distinct capsules have been identified. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accessmedicine.mhmedical.com/content.aspx?aid=1128784136 ER -