- For many vaccines, only one dose is necessary to provide protection in an animal over 12 weeks old.
- Annual revaccination is recommended for most vaccines, although some (for example distemper) may need only be given every other year, while more frequent dosing may be advised for others (for example the intranasal Bordetella bronchiseptica kennel cough vaccine).
- The first booster at one year of age is, however, important in case the first vaccination course was for some reason ineffective, e.g. if MDA was still at interfering levels.
Back to menu