Outcomes of patients with confirmed SARS-CoV-2 infection undergoing anesthesia: A pilot study.

• Surgical stress can decrease cellular immunity, which is important for the control of SARS-CoV-2 infection • The majority of patients positive for SARS-CoV-2 infection in the preoperative period was asymptomatic • Some asymptomatic patients before procedure developed symptoms in the postoperative period • There is a difference in mortality risk for having versus not having pre-operative symptoms