Hello, we live in Illinois and my vet recommended that we think about a leptospirosis vaccine? My little guy has some health issues (MVD and calcium oxilate bladder stones) so I dont want to over vaccinate and my vet will not give me a yes or no on whether or not I should do it. Has anyone heard of this or have experience with it? My vet says it is more common in the midwest...any suggestions or thoughts would be great!