Things I've found:

Difference between food poisoning and food contamination
Food poisoning is caused by consuming food that contains certain types of bacteria or viruses. Some bacteria produce toxins (poison) which can spread through food. These toxins can result in food borne illnesses. [1]

Food poisoning = an acute illness of sudden onset caused by the recent consumption of contaminated or poisonous food. [2]

Contamination = the unintended presence of harmful substances or conditions in food that can cause illness or injury to people who eat the impure or tainted food. [3]

Contamination of food maybe considered as the transference of any objectionable matter into or on the food.
3 types of contamination:
(1) Contamination by bacteria, moulds or viruses
(2) Physical contamination by foreign bodies including insects
(3) Chemical contamination [2]

Therefore a food contamination might not result in food poisoning, it is just the cross-contamination of foreign particles to food.


For typical biological and chemical poisoning, I've borrowed the book. I'll show u all to see if its relevant on monday. =)

Reference:
1. Isle, M. (2001) Everything you need to know about food poisoning. The Rosen Publishing Group.
2. Richard, A.S (1993) Hygiene For management. A text for food hygiene courses. Highfield Publications.
3. McSwane, David; Rue, Nancy & Linton, Richard (2000). Essentials of Food Safety and Sanitation. Prentice Hall.