Final answer:
The important consequences of a S. pyogenes infection include acute rheumatic fever (ARF) and poststreptococcal glomerulonephritis.
Step-by-step explanation:
The important consequences of a S. pyogenes (Streptococcus pyogenes) infection include acute rheumatic fever (ARF) and poststreptococcal glomerulonephritis. Acute rheumatic fever is an immune-mediated disease that can occur following pharyngitis caused by specific rheumatogenic strains of S. pyogenes. It can lead to damage and inflammation of the heart valves, resulting in rheumatic heart disease. Poststreptococcal glomerulonephritis is another sequelae of S. pyogenes infection, characterized by damage and inflammation of the glomeruli of the kidneys.