| Type | Example pathogens (disease) |
|---|---|
| Bacteria | Salmonella (Salmonellosis), Escherichia coli (E. coli) O125:H7 (Gastroenteritis), Vibrio cholera (Cholera), and Salmonella typhi (Typhoid fever) |
| Protozoa | Giardia lamblia (Giardiasis), Cryptosporidium (Cryptosporidiosis), Entamoeba histolytica (amoebic dysentery) |
| Virus | Hepatitis A (infectious hepatitis), Rotavirus (Gastroenteritis, Adenovirus (respiratory disease, gastroenteritis) |