COVID-19 Testing in Patients With Vascular Disorders

"Nasal or pharyngeal respiratory swabs were routinely taken of each patient admitted at our departments and repeated regularly at 48 h intervals during the inpatient stay.~In the HCP cohort testing for SARS-CoV-2 RNA was performed, on a weekly basis, at the Department of Laboratory Medicine, Medical University of Vienna, Austria, using real-time polymerase chain reaction (RT-PCR). Comparability of the results of all test methods used was confirmed by participation in international quality control ring trials."