With all the posts and people having ringworm problems, is there a relation between the time of the year and number of cases? I think i can remember somebody saying that the cold weather would also help to kill it off, but it seems like everybody including my self has had a few cases show up. Some people have said that it is a one time deal on calves and they rarely see it on cows but in my case it is my yearling heifers that have had it and not a single case on any of the bulls. Can ringworm fungus be isolated in a single pasture and continually infect calves in that pasture? Any thoughts or experiences?