SARS-CoV-2 detection in hospital indoor environments, NW Iran

Atmospheric Pollution Research

article

Amir Mohammadi¹  Ali Soleimani²  Ali Abdolahnejad¹  Morshad Ahmed³  Tanzina Akther³  Sepideh Nemati-Mansour⁴  Saber Raeghi⁵  Gholam Hossein Rashedi⁶  Mohammad Miri⁷ 

[1]Department of Environmental Health Engineering, Maragheh University of Medical Sciences

[2]Department of Public Health, Maragheh University of Medical Sciences

[3]Department of Earth and Atmospheric Sciences, University of Houston

[4]Student Research Committee, Tabriz University of Medical Sciences

[5]Department of Laboratory Sciences, Maragheh University of Medical Sciences

[6]Expert of Environmental Health Engineering, Amir Al-muminin Hospital, Maragheh University of Medical Sciences

[7]Non-communicable Disease Research Center, Department of Environmental Health Engineering, Sabzevar University of Medical Sciences

关键词: Settled dust;    PM 2.5;    COVID-19;    PCA;    Risk assessment;   

DOI  :  10.1016/j.apr.2022.101511

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

This study aimed to investigate the potential contamination of SARS-CoV-2 in indoor settled dust and surfaces of Amir Al-Muminin hospital in Maragheh, Iran. Samples were taken from surfaces and settled dust using a passive approach and particulate matter (PM) using an active approach from different hospital wards. SARS-CoV-2 was detected in 15% of settled dust samples (N = 4/26) and 10% of surface samples (3/30). SARS-CoV-2 has been detected in 13.8% and 9.1% of the dust samples collected at a distance of fewer than 1 m and more than 3 m from the patient bed, respectively. SARS-CoV-2 was found in 11% of surface samples from low-touch surfaces and 8% from high touch surfaces. The relationship between PM 2.5 , PM 10 , humidity, temperature, and positive samples of SARS-CoV-2 was investigated. A positive correlation was observed between relative humidity, PM 2.5 , and positive SARS-CoV-2 samples. Principal component analysis (PCA) suggested positive correlation between positive SARS-CoV-2 samples, relative humidity, and PM 2.5 . Risk assessment results indicated that the annual mean infection risk of SARS-CoV-2 for hospital staff with illness and death was 2.6 × 10 −2 and 7.7 × 10 −4 per person per year. Current findings will help reduce the permanence of viral particles in the COVID 19 tragedy and future similar pandemics e.g., novel influenza viruses.

【 授权许可】

CC BY