新冠病毒（SARS-CoV-2）在非 ICU 隔离病房中 PCR 阳性持续时间较长的 COVID-19 患者周围环境和个人防护设备中的污染情况。
Contamination of SARS-CoV-2 in patient surroundings and on personal protective equipment in a non-ICU isolation ward for COVID-19 patients with prolonged PCR positive status.
机构信息
Department of Infection Control, West China Hospital, Sichuan University, Chengdu, China.
Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China.
出版信息
Antimicrob Resist Infect Control. 2020 Oct 29;9(1):167. doi: 10.1186/s13756-020-00839-x.
OBJECTIVES
We performed an environmental sampling study to investigate the environmental contamination of SARS-CoV-2 by COVID-19 patients with prolonged PCR positive status of clinical samples.
METHODS
We sampled the air from rooms for nine COVID-19 patients with illness or positive PCR > 30 days, before and after nasopharyngeal/oropharyngeal swabbing and before and after nebulization treatment. We also sampled patients' surroundings and healthcare workers' personal protection equipment (PPE) in a non-ICU ward. SARS-CoV-2 was detected by PCR.
RESULTS
Eighty-eight samples were collected from high-touch surfaces and floors in patient rooms and toilets, with only the bedsheets of two patients and one toilet positive for SARS-CoV-2. All air samples (n = 34) were negative for SARS-CoV-2. Fifty-five samples collected from PPE were all negative.
CONCLUSION
Contamination of near-patient surroundings was uncommon for COVID-19 patients with prolonged PCR positive status if environmental cleaning/disinfection were performed rigorously. Airborne transmission of SARS-CoV-2 was unlikely in these non-ICU settings.
目的
我们进行了一项环境采样研究，以调查具有临床样本延长 PCR 阳性的 COVID-19 患者对 SARS-CoV-2 的环境污染情况。
方法
我们对 9 名患有疾病或 PCR 阳性>30 天的 COVID-19 患者的房间空气进行了采样，在鼻咽/口咽拭子采样前后以及雾化治疗前后进行了采样。我们还在非 ICU 病房中对患者周围环境和医护人员的个人防护设备（PPE）进行了采样。通过 PCR 检测 SARS-CoV-2。
结果
从患者房间和厕所的高接触表面和地板上共采集了 88 个样本，只有两名患者的床单和一个厕所的 SARS-CoV-2 呈阳性。所有空气样本（n=34）均为 SARS-CoV-2 阴性。从 PPE 采集的 55 个样本均为阴性。
结论
如果严格进行环境清洁/消毒，具有延长 PCR 阳性的 COVID-19 患者的近患者环境污染并不常见。在这些非 ICU 环境中，SARS-CoV-2 的空气传播不太可能。
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