Run Date: JULâ 17â2002. Population Density. 2000 U. S. Census By Block Group. 0 6 12 Miles. Lewis County, Washington. This map was compiled by Lewis County Geographic Information Services. The base map was developed by the Washington State Department of Natural.
Food poisoning is a general term for health problems arising from eating contaminated food. Food may be contaminated by bacteria, viruses, environmental toxins, or toxins present within the food itself, such as the poisons in some mushrooms or certain seafood.
Fig. 3.26: Food poisoning comes from harmful bacteria on food. Food poisoning can be caused by eating food contaminated with bacteria, viruses, chemicals or poisonous metals such as lead or cadmium. Most food poisoning, however, is caused by bacteria and because of this, only bacteria will be discussed in this section.