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Streptococcus is a large genus of common Gram-positive pyogenic cocci, widely distributed in nature, in human and animal feces, and in the nasopharynx of healthy people; most do not cause disease. Pathogenic streptococci mainly cause various purulent inflammations in humans, and can also cause pneumonia,…

Recently, in the course of my studies, I have become deeply fascinated by Group A beta-hemolytic Streptococcus and the series of diseases it induces. The reason is that this streptococcal infection is related to at least two of my relatives: one is my son, and…

Sore throat and rheumatism are both common diseases, and their causes may both be related to infection by a bacterium called Group A Streptococcus. Group A Streptococcus is a species of the genus Streptococcus; it is a pyogenic coccus, a Gram-positive bacterium with strong pathogenicity,…

My son, since childhood, has been extremely prone to sore throats, and it is hard to tell whether it is tonsillitis, epiglottitis, or both. Every time a cold or other cause brings on a sore throat, I am thrown into a panic. His throat pain…