Following an incubation period of about 3–4 days, a variety of gastrointestinal symptoms appear, ranging from mild to severe bloody diarrhoea, mostly without fever.
Po inkubacijski dobi približno 3– 4 dni se pojavijo različni gastrointestinalni simptomi od blage do hude krvave driske, ponavadi brez povišane telesne temperature.