BAU	Binding antibody units
BMI	Body Mass Index
CASCO	Centre of High Specialisation for the Cure of Obesity
CD	Cluster of differentiation
CVID	Common Variable Immunodeficiency
ED	Emergency Department
GMC	Geometric mean concentration
GMT	Geometric Mean Titre
Grab	Granzyme B
HA	Hemagglutinin
HAI	Hemagglutination Inhibiting Antibody
HI	Hemagglutination Inhibition
HIV	Human Immunodeficiency Virus
HDL	High-Density Lipoprotein
IFN	Interferon
IFN	Gamma
IFNγ	Interferon-gamma
IgG	Immunoglobulin G
IIV	Inactivated Influenza Vaccine
IL-10	Interleukin-10
IL-6	Interleukin-6
IL12R	Interleukin 12 Receptor
ILI	Influenza-like Illness
LAIV	Live Attenuated Influenza Vaccine
MCP-1	Monocyte Chemoattractant protein-1
MHC-II	Major Histocompatibility Complex-II
MHOO	Healthy Metabolic Phenotypes
MUOO	Unhealthy Metabolic Phenotypes
NA	Neuraminidase
NK cells	Natural Killer Cells
PBMC	Peripheral Blood Mononuclear Cell
RIV	Recombinant Influenza Vaccine
TCR	T-cell receptor
TIV	Trivalent Influenza Vaccine
TNF-alpha	Tumour necrosis factor-alpha
QIV	Quadrivalent Influenza Vaccine
S1/S2	Spike Glycoprotein
WHO	World Health Organisation