aOR	Adjusted odds ratio
AUROC	Area under the receiver-operating-characteristic curve
BA.5	Omicron sublineage BA.5
BMI	Body mass index
CKD	Chronic kidney disease
COPD	Chronic obstructive pulmonary disease
CRP	C-reactive protein
FEU	Fibrinogen-equivalent units
ICU	Intensive care unit
IL-6	Interleukin-6
IQR	Interquartile range
NV	Not vaccinated
PCT	Procalcitonin
RT-PCR	Reverse-transcription polymerase chain reaction
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
SpO2	Peripheral oxygen saturation
T2DM	Type 2 diabetes mellitus
WBC	White blood cell count