An off-white freeze-dried pellet containing attenuated strains of BRSV (Bovine Respiratory Syncytial Virus) and PI3 (Parainfluenza type 3) viruses supplied together with a suspension containing inactivated, adjuvanted IBR (Infectious Bovine Rhinotracheitis – BHV-1) and BVD (Bovine Viral Diarrhoea) cytopathic and non-cytopathic Type 1 viruses.