Emerg Infect DiseidEmerging Infectious Diseases1080-60401080-6059Centers for Disease Control105115342627710LetterFilth flies are transport hosts of Cryptosporidium parvum.GraczykT. K.FayerR.CranfieldM. R.Mhangami-RuwendeB.KnightR.TroutJ. M.BixlerH.Sep-Oct199955726727