Table 1.

Literature reports concerning viral transmission in operating rooms.

Study	Country of study	Design	Location and year of evaluation	Pathogen evaluated	Study quality (GRADEa)
Zhao et al [21]	China	Retrospective cohort study	Wuhan 2020	SARS-CoV-2b	Low
Pei et al [22]	China	Case-control study	Peking 2003	SARSc	Low
Kamming et al [23]	Canada	Experience paper	Toronto 2003	SARS	Low
Chee et al [24]	Singapore	Experience paper	Singapore 2003	SARS	Low
Tien et al [25]	Canada	Case series	Toronto 2003	SARS	Low
Park et al [26]	South Korea	Experience paper	Sungkyunjkwan 2015	MERSd	Low
Beasley et al [27]	United States	Opinion paper	Washington 2004	Smallpox	Low
Santos de Silva et al [28]	Brazil	Case report	Vale dos Sinos 2014	Adenovirus	Low

^aGRADE: Grading of Recommendations, Assessment, Development, and Evaluations.

^bSARS-CoV-2: severe acute respiratory syndrome coronavirus 2.

^cSARS: severe acute respiratory syndrome.

^dMERS: Middle Eastern respiratory syndrome.