Streptococcus pyogenes


Streptococcus pyogenes
The bacterial cause of strep throats, impetigo, rheumatic fever, scarlet fever, glomerulonephritis, and invasive fasciitis. A common bacteria of the skin.

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a β-hemolytic species that comprises group A of the Lancefield classification and is toxigenic and pyogenic; it is separable into numbered serovars on the basis of the specificity and combination of the M, R, and T antigens. This species is the most frequent bacterial cause of acute pharyngitis and also causes a variety of cutaneous and systemic infections, including rheumatic fever, scarlet fever, puerperal sepsis, poststreptococcal acute glomerulonephritis, and necrotizing fasciitis.

Medical dictionary. 2011.