ABSTRACT
Now,let'sreturntoourherashes.Afternumerous interviews,theinvestigatorsdeterminedthatthepeoplewiththerasheshadall beenswimmingatalocallake(somethingincommon).Inaddition,thosepatients whodidnothaverasheshadnotgoneswimmingthere.Soitseemslikeanopenand-shutcase,right?Theevidenceclearlypointstothewaterasthesourceofthe problem,sosignswereposted,andthewordwasspreadtoavoidthewater.
