CRP	C-reactive protein
CATREG	Regression go categorical data
CI	Confidence interval
e.g.	Exempli gratia, for example
LTIs	Lower respiratory tract infections
MERS	Middle East Respiratory Syndrome
mg/L	Milligrams per liter
PCR	Polymerase chain reaction
RSV	Respiratory syncytial virus
RTIs	Respiratory tract infections
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
UTIs	Upper respiratory tract infections