作者
Po Ying Chia, Kristen Kelli Coleman, Yian Kim Tan, Sean Wei Xiang Ong, Marcus Gum, Sok Kiang Lau, Xiao Fang Lim, Ai Sim Lim, Stephanie Sutjipto, Pei Hua Lee, Than The Son, Barnaby Edward Young, Donald K Milton, Gregory C Gray, Stephan Schuster, Timothy Barkham, Partha Pratim De, Shawn Vasoo, Monica Chan, Brenda Sze Peng Ang, Boon Huan Tan, Yee-Sin Leo, Oon-Tek Ng, Michelle Su Yen Wong, Kalisvar Marimuthu
发表日期
2020/5/29
期刊
Nature communications
卷号
11
期号
1
页码范围
2800
出版商
Nature Publishing Group UK
简介
Understanding the particle size distribution in the air and patterns of environmental contamination of SARS-CoV-2 is essential for infection prevention policies. Here we screen surface and air samples from hospital rooms of COVID-19 patients for SARS-CoV-2 RNA. Environmental sampling is conducted in three airborne infection isolation rooms (AIIRs) in the ICU and 27 AIIRs in the general ward. 245 surface samples are collected. 56.7% of rooms have at least one environmental surface contaminated. High touch surface contamination is shown in ten (66.7%) out of 15 patients in the first week of illness, and three (20%) beyond the first week of illness (p = 0.01, χ2 test). Air sampling is performed in three of the 27 AIIRs in the general ward, and detects SARS-CoV-2 PCR-positive particles of sizes >4 µm and 1–4 µm in two rooms, despite these rooms having 12 air changes per hour. This warrants further study of …
学术搜索中的文章
PY Chia, KK Coleman, YK Tan, SWX Ong, M Gum… - Nature communications, 2020