- Escherichia coli (E. coli).
- Clostridium perfringens.
- Entamoeba histolytica.
Toxins and Chemicals
Toxins produced by bacteria can also contaminate food, as well as the bacteria themselves. For example, the bacterium Staphylococcus aureus can contaminate ice cream and its toxins can lead to food poisoning.
Water contamination can also contribute to food poisoning. Water can become contaminated with bacteria or other germs (microbes) when human or animal stools (faeces) get into the water supply.
The following precautions should be followed while preparing food:
- Do not brush a child's teeth with tap water.
- Avoid eating uncooked vegetables (as they may have been washed in contaminated water).Avoid drinking tap water.
- Do not use ice cubes in drinks (as the ice may have been made from tap water).
For most cases of food poisoning, symptoms tend to come on within one to three days of eating the contaminated food. However, for some types of food poisoning, this incubation period can be as long as 90 days.