MSD says that no other UK-licensed BRD vaccine can be administered earlier in life and that the onset of immunity for BRSV is 6 days (for calves vaccinated from the day of birth onwards) and 5 days (for calves vaccinated from the age of one week onwards).
Onset of immunity for Pi3V is one week after vaccination. The duration of immunity is 12 weeks for both viruses.
From a practical standpoint, the new license means Bovilis Intranasal RSP Live can now be used on farm at the same time as other early life interventions associated with newborn calves – for example, colostrum/first milk feeding, navel management, tagging, jacketing and necessary pen movements.
Additionally, Bovilis Intranasal RSP Live can be used up to six hours after mixing with the solvent, which MSD says is the longest of all the available intranasal vaccines for these pathogens.
The vaccine is supplied as a nasal suspension product that doesn’t need a specific applicator – although for maximum flexibility an easy-clean injector and nozzle kit is available for vaccinating multiple animals.
The vaccine is available in 5x1 dose, 5 dose and 5x5 dose packs.
PS: Whilst you're here, take a moment to see our latest job opportunities for vets.