Remember my son's leech infection
http://www.jehovahs-witness.com/forum/thread.asp?id=30496&site=3&page=1
......well, I just found out yesterday that the State Park where he picked up this nasty infection now has signs posted to "Swim at Own Risk" and as you enter the gate of the park, the Ranger tells visitors that there is E-coli bacteria in the water!