没化验大便，现在不发热了，前两天发热但那时候不拉肚子，恶心没吐
O B-Medical_Examination I-Medical_Examination B-Medical_Examination I-Medical_Examination O O O O B-Symptom I-Symptom O O O O O B-Symptom I-Symptom O O O O O B-Symptom I-Symptom I-Symptom O B-Symptom I-Symptom O B-Symptom