I was not aware of IE in Horned Herefords.  I know the Canadian Association announced this year they were going to start testing for it, along with a few other things.

Has the American Association been testing for it?  Which lines are carriers?  H76 any advice on this?

As a separate note, is idiopathic epilepsy identified in either the gelbvieh or red angus breeds?  We used a RA x Gelbvieh terminal bull for a few years and shipped him this year (like H76, just to say we did the crossbreeding deal).  Over 50% of the calves off of him this past year showed either full blown IE or symptoms.  Never had experienced anything like that before and don't want to ever again.