发热，咳嗽，有痰多是呼吸道感染引起，如果普通感染可以观察3天，3天无好转需要就诊肺部听诊
B-Symptom I-Symptom O B-Symptom I-Symptom O O B-Symptom O O B-Symptom I-Symptom I-Symptom I-Symptom I-Symptom O O O O O O O O O O O O O O O O O O O O O O O O O B-Medical_Examination I-Medical_Examination I-Medical_Examination I-Medical_Examination