Group A β-hemolytic streptococcus is a bacterium that lives on the surface of the nose, throat and skin of humans and causes:
Tonsillo-pharyngitis
lower respiratory tract infections
Kuntrusha
Impetigo
Meningitis
Endocarditis
Arthritis and others.
Streptolysin O – A is a hemolysin of streptococci, against which specific antibodies are produced, and its detection indicates a streptococcal infection:
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