RE:RE:RE:RE:RE:RE:RE:RE:An evolving mapHey moo moo,
you probably know this - but just wondering if you're up to date with your shots?
How often do cows need to be vaccinated?
The infectious vaccine may give properly vaccinated cattle immunity for life. Repeated modified live infectious vaccinations are unnecessary. However, immunity of the vaccinated animal can be ensured by using a non infectious vaccine booster every year or an infectious vaccine every 3 years.