?:definition
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Serology reagents used in tests intended to detect antigens that permit the identification of strains of Streptococcus, a genus of spherical bacteria of the family Streptococcaceae. Streptococci that are pathologic in humans include S. pneumoniae (pneumococcus), a major respiratory tract pathogen and the most common cause of pneumonia, and S. pyogenes, which is one of the most important bacterial human pathogens, causing a wide range of suppurative diseases (e.g., pharyngitis, otitis media, sinusitis, endocarditis) and nonsuppurative sequelae (e.g., acute rheumatic fever).
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