EXTRA CREDIT: Horse Quarantine Procedures By - April 16, 2012 0 103 Watch the slideshow below to learn more about core vaccines, and then take the extra credit quiz for Club Horse points, or return to the Equine Herpesvirus main page. The Core Vaccines slideshow is a flash feature. In order to see the entire slideshow, please download Flash. Back to Horse Health College: Equine Herpesvirus. Back to Horse Health College: Equine Herpesvirus.