I-turista ingumphumela wokungcoliswa amagciwane, isiphuzo noma ukudla okudlayo. Izifo ezithathelwanayo ezivame ukuhileleka amagciwane (Escherichia coli, shigella, salmonella, Campylobacter), ngezinye izikhathi amagciwane (rotavirus) noma ama-parasites (amoeba). Ukunganeli kwenhlanzeko (ikakhulukazi ukusetshenziswa kwamanzi angaphuzwayo) kuthanda lokhu kudluliselwa. Amazwe athintekayo njalo yi-Egypt, India, Thailand, Pakistan, Morocco, Kenya, Tunisia, Caribbean, Turkey, Mexico, njll. Futhi eYurophu, eMalta, Greece, Spain nasePortugal nazo zisuka kwezinye izimo, kodwa izilinganiso ezincane kakhulu.