Paul Daly (Fianna Fail) | Oireachtas source

I know Dr. Barrett has said it was only conducted on a trial basis, but even from the evidence of the badger vaccine, what is the longevity? For us, in response to the pandemic, we have to get a booster shot every year. If an animal is vaccinated once, is that all that is required for life, as is the case for the vaccinations we all received as kids? If the vaccine was up and running and we were using it, would it have to be administered annually?