Hospital patients with acute SARS-Cov-2 had been diagnosed via NP or OP swab during hospitalization from March 7, 2020 to April 8, 2020. Excluded from the sample were patients who were intubated, who had died, or who were transferred to another department within 24 hours of being brought to the emergency department. Of the original 1446 COVID-19 patients admitted to hospital during this time, 1376 were included in the analysis.