One sick pup, again [View all]

Last year when we adopted our dear Rosie she got very sick for about a month. High fever, lethargy, trembles. We tried every thing we could think of and every treatment our vet recommended. She had a bad habit of eating grass hoppers and was passing whole ones in her stools. We concluded this may have been the cause or part of the problem. She made it through and grew into a wonderful companion following a very frightening period. Well, it appears she is starting to go through the same think again, not quite as sever, but showing a fever and lethargy. Grass hopper are back and we have our suspicions.
Has anyone else experienced this problem?