Recontamination of cooked foods or eating raw seafood. Bacteria killed by normal cooking. Bacillus cereus Produces a spore and grows in normal oxygen atmosphere. Mild case of diarrhea and some nausea within 12 to 24 hours. Improper holding and stroage temperatures after cooking.
Bacteria killed by normal cooking, but heat-resistant spore can survive.
Listeria monocytogenes Survives adverse conditions for long time periods. Soil, vegetation and water. Can survive for long periods in soil and plant materials. Milk, soft cheeses, vegetables fertilized with manure. Contaminated raw products.