I found this webpage very informative about worms. Another piece I read said that roundworms are more prevelant in cats (25%-75% more) than tapeworms. Anyway, since I've discovered my young cat has an intestinal parasite, I thought I'd better get educated real fast. Don't want those things anywhere near myself or my other cats.
http://www.biosci.ohio-state.edu/~parasite/pets.html
http://www.biosci.ohio-state.edu/~parasite/pets.html