Live, attenuated Infectious Bronchitis virus variant strain 4-91 ≥3.6 log₁₀  EID₅₀*.

*EID₅₀ = 50% Embryo Infective Dose: the titre required to infect 50% of the embryos inoculated with the virus.


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Nobilis IB 4-91 contains live, attenuated Infectious Bronchitis virus variant strain 4-91 ≥3.6 log ₁₀ EID₅₀*. *EID₅₀ = 50% Embryo Infective Dose: the titre required to infect 50% of the embryos inoculated with the virus.

For uses, dosage. contra-indications and warnings, see datasheet. Nobilis IB 4-91 may only be prescribed and administered by your veterinary surgeon from whom advice should be sought.  Further information is available on request.