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

Li Wei, Wenzhi Huang, Xiaojun Lu, Yantong Wang, Linzhi Cheng, Rong Deng, Haiyan Long, Zhiyong Zong
2020 Antimicrobial Resistance and Infection Control  
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)
more » ... n 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.
doi:10.1186/s13756-020-00839-x pmid:33121538 fatcat:2cys4cbs2vhdnkkaoehuch2hdu