COVID-19 symptoms
cough
On day 1, the most prevalent symptom among each group was cough, with a prevalence of 57.1% (4/7) in the control group, 71.4% (5/7) in the demeclocycline 150 mg group, and 83.3% (5/6) in the demeclocycline 300 mg group (as shown in Supplementary Fig. 