Changes

*Vaccination of young animals should be when the natural passive immunity decreases below the threshold for providing protection. Active immunity should then be stimulated so that the animal has constant protection. The vaccination should not be given too early, as the natural immunity can interfere with immunisation by binding and neutralising the vaccine [[Adaptive Immune System - WikiBlood#Antigen Recognition|antigens]].

*Vaccination of young animals should be when the natural passive immunity decreases below the threshold for providing protection. Active immunity should then be stimulated so that the animal has constant protection. The vaccination should not be given too early, as the natural immunity can interfere with immunisation by binding and neutralising the vaccine [[Adaptive Immune System - WikiBlood#Antigen Recognition|antigens]].

*2 vaccines are usually given to allow for differences between neonates as the point where natural immunity decreases and active immunity needs to be stimulated, will differ between littermates and between different animals

*2 vaccines are usually given to allow for differences between neonates, as the point where natural immunity decreases and active immunity needs to be stimulated, will differ between littermates and between different animals

===Dog Vaccinations===

===Dog Vaccinations===