Each dose of reconstituted vaccine contains:
Active substance:
Live attenuated avian Infectious Bronchitis Virus (IBV) variant strain 4-91: ≥ 3.6 log10 EID50 *
* EID50 = 50% Embryo infective dose: the virus titre required to produce infection in 50% of the embryos inoculated.
For a full list of excipients, see section 'Pharmaceutical particulars'.