Abstract:

Streptococcus pyogenes is also called group A streptococcus (GAS), is an uncommon pathogen for community acquired pneumonia(CAP) in adults, which is easily ignored in clinical diagnosis. This paper reports a young man with pneumonia caused by nonstandard treatment of acute suppurative tonsillitis, who accompanied by an increase in antistreptolysin O(ASO) and pathogenic bacteria was identified as GAS. After vancomycin was injected intravenously to control the infection, the ASO antibody titer remained at a high level, so the patient was given intramuscular benzylpenicillin once a month for 5 months. After 6 months of follow-up, the patient had no fever, sore throat or other symptoms, the ASO level decreased to normal, and there was no rheumatic multiple organ injury. In recent years, there are still reports of global GAS infection, and it can cause a series of complications, such as rheumatic heat, rheumatic heart disease, and even death in severe cases. The early diagnosis and treatment of GAS infection is crucial.

Key words: Streptococcus pyogenes, Community acquired pneumonia, Antistreptolysin O