infection after tonsillectomy

例句：

1. 1.The patient developed an infection after the surgery.
   病人在手术后感染了。
2. 2. The doctor advised against sharing utensils to prevent infection.
   医生建议不要共用餐具以防止感染。
3. 3. The outbreak of the disease is a serious threat to public health.
   这种疾病的爆发对公共卫生构成了严重威胁。