Years ago when we were dealing with Sherman's sarcoid, Joyce Harman told us not to give him vaccinations. Since he was not healthy, he should not get shots. We ran titers ( a serological test for antibodies) on both Barry and Sherman to see where they were for protection. When we found they were protected, we did not repeat vaccines for a few years. This is a practice we have continued with the horses we own now.
Rosemary was vaccinated during her pregnancy so that she could pass the necessary antibodies onto Roscoe. Though the vaccines were needed, they did have a negative effect. Her "scar" turned into a growing sarcoid. You all know the battle that followed. When we vaccinated last year, she did not get any shots. Unfortunately Winston did just before his laminitis diagnosis. He also has a history of carcinomas and a few of those appeared during the last year.
vaccine too?We monitor our horses' food, shoes, turnout, blanketing and worming, but we blindly follow a generic vaccination plan. Take an hour and read Joyce's article here. It will help explain the side of vaccines we don't see and will show alternatives to the traditional methods.