Listeria monocytogenes is mostly found in uncooked meats, cold cuts, vegetables, soft cheeses, and unpasteurized milk. It is also present in soil and water. This particular bacteria usually causes illness in elderly people, pregnant women and other people with poor immune system. When a person is infected with listeria monocytogenes, he or she may suffer from diarrhea, nausea, muscle aches or fever. After eating a food contaminated with listeria monocytogenes, it may take up to 3 weeks before symptoms start to show. It is important that infants are protected from this bacteria because it may lead to long-term neurological damage.
4. Escherichia coli
Escherichia coli, also known as E coli is normally present in the intestines of both animals and humans. Some strains of E coli are actually harmless, however most of them are dangerous because they produce toxins. Escherichia coli is also found in meat and other food products that are contaminated with animal or human feces. When a person consumes an escherichia coli contaminated food, this may cause severe diarrhea, low fever, vomiting, stomach cramps. In some cases, this may also lead to life-threatening condition such as acute renal failure, anemia and low platelet count.