If treatment is successful, then it would be a new infection.
I am going through the same hell.It doesn't seem like there are any clear answers on wether or not trich can go dormant. If your diagnosed and are treated but then it reaccures a year or so later is it a new case? Still looking for answers myself.
How can you get it from non-sexual means???
Trich is often hard to explain and hard to diagnosis. You might have been misdiagnosed, might have gotten it from non-sexual means. Can't really say.