Merck Animal Health offers the NOBILIS IB product line, a comprehensive line of vaccines for active immunization of poultry against disease caused by the Infectious Bronchitis virus. The NOBILIS IB family contains vaccines for protection against several serotypes, like (but not limited to) serotypes 4/91, Massachusetts Ma5, or related types. Nobilis IB Ma5 +Nobilis IB 4/91 are the effective pair from the Protectotype approach, a solution for broad protection against Infectious Bronchitis.

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