Specimens were collected in accordance with CDC guidance and included serum and nasopharyngeal and oropharyngeal swab specimens.

的案例定义。 标本是根据 CDC 指南收集的， 包括血清、鼻咽和口咽拭子标本。

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）。

To perform RT-PCR, some of the extracted sample from the nasopharyngeal swab is added to a solution containing an enzyme called reverse transcriptase, nucleotides and primers that are complimentary to a specific SARS-CoV-2 target sequence.

RT-PCR的操作步骤是：首先将鼻咽拭子的部分样本加入到含有逆转录酶、核苷酸和引物的溶液中，其中的引物将与SARS-CoV-2病毒的目标序列互补。

To do that, you would collect a nasopharyngeal swab which is where you take a long q-tip with only one soft end and twirl it a few times inside a nostril to get enough secretions on it to be analyzed.

医护人员首先需要向被采样对象采集鼻咽拭子，即用一根较长的无菌棉签探入到鼻腔，并在鼻腔内部停留几秒转动二三圈，取样用作分析。