Air and surface contamination by SARS-CoV-2 virus in a tertiary hospital in Wuhan, China

•Twelve air samples and 355 surface samples from a hospital were tested for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).•Only one air sample, which was obtained during an intubation procedure, tested positive.•A low level of surface contamination was found, and most occurred on high-touch surfaces.•No association was found between surface contamination and patient characteristics.