Age (mean ± SD), years

69.90 ± 17.83

Male gender [n (%)]

81 (55.9)

Presence of comorbidities* [n (%)]

127 (87.6)

Exposure to a positive SARS-CoV-2 patient [n (%)]

9 (6.2)

Fever and dry cough at presentation [n (%)]

30 (20.7)

Lymphocytes [median; (IQR)]

1100 (800.0)

C-reactive protein [median; (IQR)], mg/dL

8.99 (15.4)

Procalcitonin [median; (IQR)], ng/mL

0.2 (1.0)

LDH [median; (IQR)], U/L

250 (128.0)

Positive respiratory viruses test (other than SARS-CoV-2) [n (%)]

7 (4.8)

Positive Legionella pneumophila or Streptococcus pneumoniae urinary antigen tests [n (%)]

3 (2.1)

Presence of chest CT typical features [n (%)]

57 (39.3)

Positive SARS-CoV-2 RT-PCR [n (%)]

23 (15.9%)