the air in a designated hospital for COVID-19.
•  Environmental surface in medical areas was frequently contaminated.
•  Strict environmental surface disinfection and enhanced hand hygiene were recommended.

Abstract
Background
Coronavirus disease 2019 (COVID-19) is characterized by risk of nosocomial transmission; however, the extent of environmental contamination and its potential contribution of environmental contamination to SARS-CoV-2 transmission are poorly understood. This study aimed to investigate whether environmental contamination may play a role in SARS-CoV-2 transmission.

Methods
Air samples were collected by natural precipitation, and environmental surface samples were collected by conventional sur