Hello, I have a sick 12 wk old coro. sussex chick. At 8 wks the chick got cocchi, I had the state poultry guy out, he examined the chick and said it was cocchi, he told me to use sulmet. The chick was stumbling around, and could barely walk, after giving the sulmet for half a day the chick was fine, but I continued to give the chick the sulmet for 6 days like instucted by the state inspector. The chick was fine for 2 or 3 weeks, then it started having the same symptoms again. The chick has been stumbling around and can barely walk for about 2 weeks now. The chick eats,drinks, but seems very off balance. When the chick first started getting the symptoms back, I treated with sulmet again, but it did not help. Does anyone have any suggestions????