Signs and Clinical features Organism Symptoms iogel Yersinia enterocolitica Enteric fever stroenterris or Severe abdominal pain, diarrhea, fever; PMNS and blood in stool: polyarthritis, erythema Occasional bacteremia. nodosum, especially in children. Keep stool Toxin produced occasionally specimen at 4 C before culture Clostridium difficile Makes enterotoxin Abrupt onset of bloody diarhea and fever. Toxin (toxin A) and cytotoxin in stool. Patient typically received antibiotics (toxin B), which cause hea and epithelial cell necrosis Campylobacter jejuni Dysentery nvas,on of mucous membrane Toxin Fever, diarrhea; PMNs, and fresh blood in stools, production uncertain especially in children. Usually selfF-limited. special media needed for cultures at 42C