Why Do we Fall Ill — Science STD 9 — Question

Cholera is caused by a bacterium called Vibrio cholerae. A person gets cholera by drinking water or eating food infected with the bacterium. Once swallowed, it settles in the lining of the small bowel and releases a toxin (poison) that can cause the body to flush liquid into the small bowel, resulting in watery diarrhoea. Typhoid fever is an acute illness associated with fever caused by the Salmonella typhi bacteria. The bacteria spread through contaminated food or water and occasionally through direct contact with someone who is infected.