There were a lot of problems inour area last year with pinkeye, a strain not normally seen in cattle. Local vets cultured some cases and have had a custom vaccine made to cover it. If I change I will have to booster according to the vet. Thats a extra working. my main question is is how effective are vaccines that have been made like this? Is it worth doing? I would like to avoid pinkeye is at all possible and wonder if it was worth switching from pinkeye shield.