CVID	Common variable immunodeficiency.
RRTI	Recurrent respiratory tract infections, defined by ≥3 episodes of upper (rhinitis, sinusitis, otitis, pharyngitis, tonsillitis) or lower respiratory infection (bronchitis), ≥2 episode of severe respiratory infection (pneumonia), or the need for antibiotics for almost two months/year in the previous 12 months [9,10].
IVIg	Intravenous immunoglobulin.
SCIg	Subcutaneous immunoglobulin.
QoL	Quality of life.
IP-10	Interferon gamma-induced protein 10.
VEGF	Vascular endothelial growth factor.
TIbV	Trained immunity-based vaccines.
DCs	Dendritic cells