≤ 29 3 ( 4.9% ) 30–39 7 (11.5%) 40–49 12 (19.7% ) 50–59 18 (29.5%) 60–69 15 (24.6% ) 70–79 6 (9.8%) Sex Female 36(59%) Male 25 (41%) Chronic medical illness 24(39.3%) Chronic obstructive pulmonary disease 8 (13.1%) Hypertension 5 (8.2%) Diabetes 5 (8.2%) Digestive system disease 2(3.3%) Cerebrovascular disease 1 (1.6%) Chronic kidney disease 1 (1.6%) Chronic hepatitis 2(3.3%) Symptoms after discharge from hospital Fever 15(24.6%) Sore throat 8(13.1%) Cough 11(18%) Shortness of breath 3(4.9%) Sputum production 9(14.8% ) Headache 5(8.2%) Fatigue 3(4.9% ) Diarrhoea 3 (4.9% ) Asymptom 38 (62.3% ) Positive results Nasal and pharyngeal swab 36 (59%) stool 17(27.9%) sputum 8(13.1%) Disease severity status Mild 38 (62.3% ) General 20(32.8%) Severe 3 (4.9% ) Critical 0 Laboratory findings Leucocyte count (× 10⁹ per L; normal range 3.5–9.5) 6.9(4.5–8.5) >9.5 8(13.1%) <3.5 11(18%) Neutrophil count (× 10⁹ per L; normal range 1.8–6.3) 4.9(3.4–5.9) > 6.3 14(22.9%) Lymphocyte count (× 10⁹ per L; normal range 1.1–3.2) 1.5(0.8–1.9) <0·8 17(27.9%) Platelets count (× 10⁹ per L; normal range 100–300) 155(128–175) < 100 4(6.6%) Procalcitonin, ng/mL (normal range < 0.05) ≥ 0.05, n (%) 6(9.8%) C-reactive protein (mg/L; normal range 0–5) 3.2(1.7–28.6) ≥ 5.0 19(31.1%) D-dimer (mg/L; normal range 0–500) 164(65–327) >500 7(11.5%) Albumin (g/L; normal range 40–55) 33.7(28.4–37.6) <40 58(95.1%)) Alanine aminotransferase (U/L; normal range 9–50) 27 (19–36) >50 5(8.2%) Aspartate aminotransferase (U/L; normal range15–40) 24 (15–33) >40 4(6.6%) Blood urea nitrogen (mmol/L; normal range3.6–9.5) 6.1 (4.7–7.3) >9.5 5 (8.2%) Serum creatinine (µmol/L; normal range 57–111) 80 (67–95) >111 9(14.8%) Lactate dehydrogenase (U/L; normal range 120–250) 172 (150–262) >250 14(22.9%) Radiologic findings Abnormalities on chest radiograph 23(37.7% ) Ground-glass opacity 3(4.9%) Local patchy shadowing 9(14.8%) Bilateral patchy shadowing 8(13.1% ) Interstitial abnormalities 3(4.9% ) normalities on chest radiograph 38(62.3% ) Length of stay in hospital, days 18.0(14.0-22.5) Length of positive result for COVID-19 after hospital discharge, days 10(7–13) <14 47(77%) 14–28 9(14.8%) >28 5(8.2%) Treatment Oxygen therapy 21(34.4% ) Non-invasive mechanical ventilation 2(3.3%) Antiviral treatment 23(37.7% ) Antibiotic treatment 20(32.8%) Glucocorticoids 2(3.3% ) Convalescent plasma therapy 3(4.9% ) Clinical outcomes at data cutoff |