ca	cold-adapted
att	attenuated
CAIV-T	Cold-adapted, influenza vaccine, trivalent (refrigerated formulation)
CCDR	Canada Communicable Disease Report
CCI	Culture-confirmed influenza
CI	Confidence interval
CMI	Cell-mediated immune response
EIA	Enzyme immunoassay
EMEA	European Medicines Evaluation Agency
FFU	Fluorescent focus units
GBS	Guillain-Barré syndrome
GMT	Geometric mean titre
GMR	Geometric mean ratio
HA	Haemagglutinin antigen
HI	Haemagglutination inhibition
IgG	Immuneglobulin G
ITT	Intent-to-treat
LAIV	Live attenuated influenza vaccine (frozen formulation)
LRTD	Lower respiratory tract disease
mL	Millilitres
MAARI	Medically attended acute respiratory illness
MDV	Master donor virus strain
MSW	Medically significant wheezing
MVS	Master virus seed
NACI	National Advisory Committee on Immunization
pp	per protocol (population evaluated in final analysis)
SAE	Serious adverse event
SPF	Specific pathogen-free
TCID	Tissue-culture infective dose
TIV	Trivalent inactivated influenza vaccine (injectable)
ts	temperature sensitive
µg	Microgram
WHO	World Health Organization