Giardiasis is an infection of the small intestine caused by a tiny parasite called Giardia lamblia. Many people with giardiasis may not show any symptoms,

Bacillary dysentery, also called shigellosis, is an infection of the intestines caused by bacteria called Shigella. It leads to diarrhoea that often contains blood and

Amoebiasis is a common infection of the intestines caused by a tiny parasite called Entamoeba histolytica. It spreads when food or water is contaminated with