ollie'":3rwyc1b9 said:
How effective is the vaccine?
I don't know. I e-mailed and asked for reactions and effectiveness and this is what I got:
I will mail you the literature we have. Obviously I cannot give you a 100% guarantee that your bull will not show a reaction, but we have had very few reactions reported to us from this product.
One thing to keep in mind is that there is evidence that, once animals are infected, they continue to carry the Treponema in the tissues of their foot even when they visibly look cured. This is probably why animals tend to relapse with heel warts. In the work we have done, we got better results vaccinating heifers than we did vaccinating older cows, and this carrier state was probably a main reason why.
Regards,
Leann Schulz-Thomas, DVM
Technical Services Veterinarian
Farm Animal Business
Novartis Animal Health US, Inc.
1447 140th St.
Larchwood, IA 51241
800-843-3386