If illness occurs, however, contact a health professional and describe the symptoms.

Staphylococcus aureus
Staphylococcus ("staph") bacteria are found on our skin, in infected cuts and pimples, and in our noses and throats. They are spread by improper food handling. Prevention includes washing hands with soap and warm water for 20 seconds and utensils in hot, soapy water before preparing and handling foods and not letting prepared foods -- particularly cooked and cured meats and cheese and meat salads -- sit at room temperature more than two hours. Thorough cooking destroys “staph� bacteria, but staphylococcal enterotoxin is resistant to heat, refrigeration and freezing.

Clostridium perfringens
"Perfringens" is called the "cafeteria germ" because it may be found in foods served in quantity and left for long periods of time on inadequately maintained steam tables or at room temperature. Prevention is to divide large portions of cooked foods such as beef, turkey, gravy, dressing, stews and casseroles into smaller portions for serving and cooling. Keep cooked foods hot or cold, not lukewarm.

Listeria monocytogenes
Because Listeria bacteria multiply, although slowly, at refrigeration temperatures, these bacteria can be found in cold foods typically served on buffets. To avoid serving foods containing Listeria, follow "keep refrigerated" label directions and carefully observe "sell by" and "use by" dates on processed products, and thoroughly reheat frozen or refrigerated processed meat and poultry products before consumption.