Saturday, September 13, 2008

Food PoISoning




         Food poisoning is a common, usually mild, but sometimes deadly illness. Typical symptoms include nausea, vomiting, abdominal cramping, and diarrhea that occur suddenly (within 48 hours) after consuming a contaminated food or drink. Depending on the contaminant, fever and chills, bloody stools, dehydration, and nervous system damage may follow. Food poisoning tends to occur at picnics, school canteens, cafeterias, and large social functions. These are situations where food may be left unrefrigerated too long or food preparation techniques are not clean. Food poisoning often occurs from eating undercooked meats, dairy products, or food containing mayonnaise (like coleslaw or potato salad) that have sat out too long.

       Careless foo d handling during the trip from farm to table creates conditions for the growth of bacteria that make people sick. Vegetables that are eaten raw, such as lettuce, may be contaminated by bacteria in soil, water, and dust during washing and packing. Home canned and commercially canned food may be improperly processed at too low a temperature or for too short a time to kill the bacteria.
   
         Cooked foods can also be contaminated after cooking by bacteria carried by food handlers or from bacteria in the environment. It is estimated that 50% of healthy people have the bacteria Staphylococcus aureus in their nasal passages and throat, and on their skin and hair. Rubbing a runny nose, then touching food can introduce the bacteria into cooked food. Bacteria flourish at room temperature, and will rapidly grow into quantities capable of making people sick.

Symptoms

      The symptoms from the most common types of food poisoning generally start within 2 to 6 hours of eating the food responsible. That time may be longer (even a number of days) or shorter, depending on the toxin or organism responsible for the food poisoning. The possible symptoms include: 

• Nausea and vomiting
• Abdominal cramps
• Diarrhea (may be bloody)
• Fever and chills
• Weakness (may be serious and lead to respiratory arrest, as in the case of botulism)
• Headache

Prevention

To prevent food poisoning, take the following steps when preparing food:

• Carefully wash your hands and clean dishes and utensils.
• Use a thermometer when cooking. Cook beef to at least 160°F, poultry to at least 180°F, and fish to at least 140°F.
• DO NOT place cooked meat or fish back onto the same plate or container that held the raw meat, unless the container has been thoroughly washed.
• Promptly refrigerate any food you will not be eating right away. Keep the refrigerator set to around 40°F and your freezer at or below 0°F. DO NOT eat meat, poultry, or fish that has been refrigerated uncooked for longer than 1 to 2 days.
• DO NOT use outdated foods, packaged food with a broken seal, or cans that are bulging or have a dent.
• DO NOT use foods that have an unusual odor or a spoiled taste.
Other steps to take:
• If you take care of young children, wash your hands often and dispose of diapers carefully so that bacteria can't spread to other surfaces or people.
• If you make canned food at home, be sure to follow proper canning techniques to prevent botulism.
• DO NOT feed honey to children under 1 year of age.
• DO NOT eat wild mushrooms.
• When traveling where contamination is more likely, eat only hot, freshly cooked food. Drink water only if it's been boiled. DO NOT eat raw vegetables or unpeeled fruit.
• DO NOT eat shellfish exposed to red tides.

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