area of infection

例句：

1. 1. The patient's condition worsened after receiving the infectiontreatment.
   患者在接受感染治疗后病情恶化。
2. 2.The doctor advised the patient to avoid contactwith infected individuals.
   医生建议病人避免与感染者接触。
3. 3. The outbreak of the diseasehas caused widespread infection among the population.
   该疾病的爆发已导致人群中广泛感染。