Cholera like diarrhea, but milder;

Vibrio parahaemolyticus

Rapidly spreading GI tissue destruction

Vibrio vulnificans

Watery diarrhea

Escherichia coli

GI tissue damage, dysentary, hemorragic colitis, hemolytic uremic syndrome, possible kidney failure

Escherichia coli

Fever, abdominal pain, diarrhea

Campylobacter jejuni

Peptic ulcers;

Helicobacter pylori

Abdominal pain, mild diarrhea, similar to appendicitis

Yersinia enterocolitica

diarrhea

Clostridium perfringens

mild diarrhea to colitis;

Clostridium difficile

diarrhea, nausea, and vomiting

Bacillus cereus

mostly subclinical, fever, headache, malaise

Hepatitis A Virus

Usually subclinical, fever, malaise, likely to cause liver damage

Hepatitis B Virus

Usually subclinical fever, malaise, likely to cause liver damage and become chronic

Hepatitis C Virus

Severe liver damage and high mortality rate

Hepatitis D Virus

Mostly subclinical, fever, headache, malaise, high mortality rate among pregnant women

Hepatitis E Virus

Painful swelling of parotid glands

Mumps virus

Vomiting and diarrhea for about a week

Rotavirus

Hallucinations, restricted blood flow to the limbs

Claviceps purpurea

Liver cirrhosis and cancer

 Aspergillus flavus

Diarrhea and inhibited nutritional absorption in GI tract

Giardia lamblia

diarrhea

Cryptosporidium hominis

Watery diarrhea;

Cyclospora cayetanensis