Following initial infection, approximately 80% of people do not exhibit any symptoms.
最初被感染后，大约80%的人并不会出现任何症状。
Penicillin given when the initial infection is diagnosed can prevent it.
初期感染经诊断使用青霉素治疗后可预防风湿热发作。
Penicillin given when the initial infection is diagnosed can prevent it.
初期感染经诊断使用青霉素治疗后可预防风湿热发作。
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