A case of a readmitted patient who recovered from COVID-19 in Chengdu, China

A physical examination revealed that his body temperature was 38 °C, his pulse was 118 beats per minute, his blood pressure was 121/88 mmHg, and his pulse oxygen saturation was 90% (oxygen treatment, FIO2, 50%). On February 21, because of reoccurrence of chest pain and cough, he went to our hospital; his RT-PCR tests were performed on nasal swabs, sputum, and stool [1]; and all detection results were positive; however, RT-PCR throat swabs were negative, B cells increased, and NK cells decreased. On February 22, the patient’s symptoms reoccurred, CT and nucleic acid tests for 2019-nCoV suggested that the virus in the body may not have been completely cleared from the patient on February 3 when he was discharged, and current criteria for hospital discharge (7th edition) may need to be re-evaluated and further adjusted.