I know sometime ago I asked if my horse could have EPM. My vet came out and took some blood and did some testing. At first he thought no most of her reactions seemed to me ok. When he got back the test results he said he never saw a stronger positive on a horse with little symtoms.
So we have been treating her for about 6 weeks now and I see little improvement. The treatment I am on is a 4-5mo treatment so it is slow. Any sign of improvement is good in my eyes. I made a page for her on face book if anyone wants to follow and I am posting video's on you tube.
Oh and she is duing this with a now 3mo filly at her side. She is such a brave and wonderful mare.