AAEP	American Association of Equine Practitioners
APC	Antigen presenting cells
att	Attenuated
BGH	Bovine growth hormone
ca	Cold-adapted
CIV	Canine influenza virus
CMI	Cell mediated immunity
CTL	Cytotoxic T-lymphocytes
DIVA	Differentiation of infected from vaccinated animals
EI	Equine influenza
EID50	50% egg infective dose
EIV	Equine influenza virus
ELLA	Enzyme-linked lectin assay
ELISA	Enzyme-linked immunosorbent
ESP	Expert Surveillance Panel
FAO	Food and agriculture organization
FC-1	Florida clade 1
FC-2	Florida clade 2
FEI	Federation Equestre Internationale
HA	Hemagglutinin
HI	Hemagglutination inhibition
IAV	Influenza A virus
IBV	Influenza B virus
IFN	Interferon
ISCOM	Immunostimulating complexes
IFHA	International Federation for Horseracing Authorities
LAIV	Live attenuated influenza vaccine
MDCK	Madin–Darby Canine Kidney
MDV	Master donor virus
MHC	Major histocompatibility complex
MLV	Modified-live attenuated vaccines
M1	Matrix protein 1
M2	Matrix protein 2
NA	Neuraminidase
NAb	Neutralizing antibodies
NEP	Nuclear export protein
NCR	Noncoding regions
NP	Nucleoprotein
NS1	Nonstructural protein 1
OIE	Office International des Epizooties
PA	Polymerase acidic protein
PB1	Polymerase basic protein 1
PB2	Polymerase basic protein 2
PBMC	Peripheral blood mononuclear cells
RDE	Receptor-destroying-enzyme
SIV	Swine influenza virus
SRH	Single radial hemolysis
ts	Temperature sensitive
URT	Upper respiratory tract
USDA	US Department of Agriculture
WHO	World Health Organization
WT	Wild type