On hospital day 8 (illness day 12), the patient's clinical condition improved.

在住院第 8 天（发病第 12 天）， 患者的临床状况有所改善。

The oropharyngeal specimen tested negative for 2019-nCoV on illness day 12.

口咽标本在患病第 12 天的 2019-nCoV 检测呈阴性。

Stool obtained on illness day 7 was also positive for 2019-nCoV (Ct values, 36 to 38).

患病第 7 天获得的粪便也呈 2019-nCoV 阳性（Ct 值， 36 至 38）。

A chest radiograph taken on hospital day 3 (illness day 7) was reported as showing no evidence of infiltrates or abnormalities (Figure 3).

据报道，在住院第 3 天（发病第 7 天）拍摄的胸片显示没有浸润或异常的证据（图 3）。

Laboratory results on hospital days 3 and 5 (illness days 7 and 9) reflected leukopenia, mild thrombocytopenia, and elevated levels of creatine kinase (Table 1).

住院第 3 天和第 5 天（发病第 7 天和第 9 天）的实验室结果反映出白细胞减少、轻度血小板减少和肌酸激酶水平升高（表 1）。

Specimens for repeat 2019-nCoV testing were collected on illness days 7, 11, and 12 and included nasopharyngeal and oropharyngeal swabs, serum, and urine and stool samples.

在发病第 7 天、第 11 天和第 12 天收集用于重复 2019-nCoV 检测的标本， 包括鼻咽和口咽拭子、血清以及尿液和粪便样本。

Both upper respiratory specimens obtained on illness day 7 remained positive for 2019-nCoV, including persistent high levels in a nasopharyngeal swab specimen (Ct values, 23 to 24).

在患病第 7 天获得的两份上呼吸道标本仍呈 2019-nCoV 阳性， 包括鼻咽拭子标本中的持续高水平（Ct 值， 23 至 24）。

However, a second chest radiograph from the night of hospital day 5 (illness day 9) showed evidence of pneumonia in the lower lobe of the left lung (Figure 4).

然而，住院第 5 天（发病第 9 天）晚上的第二次胸片显示左肺下叶有肺炎迹象（图 4）。

Serum specimens for both collection dates were negative for 2019-nCoV. Nasopharyngeal and oropharyngeal specimens obtained on illness days 11 and 12 showed a trend toward decreasing levels of virus.

两个采集日期的血清标本均为 2019-nCoV 阴性。 在患病第 11 天和第 12 天采集的鼻咽和口咽标本显示病毒水平呈下降趋势。

On hospital day 6 (illness day 10), a fourth chest radiograph showed basilar streaky opacities in both lungs, a finding consistent with atypical pneumonia (Figure 5), and rales were noted in both lungs on auscultation.

住院第 6 天（发病第 10 天）， 第四次胸片显示双肺底部条纹状混浊， 符合非典型肺炎的表现（图 5）， 听诊时双肺均有罗音。

Our case patient initially presented with mild cough and low-grade intermittent fevers, without evidence of pneumonia on chest radiography on day 4 of his illness, before having progression to pneumonia by illness day 9.

我们的病例患者最初表现为轻度咳嗽和低度间歇性发烧， 在他生病的第 4 天胸片上没有肺炎的证据， 然后在第 9 天进展为肺炎。

The low cycle threshold (Ct) values (18 to 20 in nasopharyngeal specimens and 21 to 22 in oropharyngeal specimens) on illness day 4 suggest high levels of virus in these specimens, despite the patient's initial mild symptom presentation.

发病第 4 天的低循环阈值 (Ct) 值（鼻咽标本为 18 至 20， 口咽标本为 21 至 22）表明这些标本中的病毒水平很高， 尽管患者最初的症状很轻微。