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Foodborne illnesses are caused by germs (disease-causing microorganisms) that enter the human body through foods. People with a foodborne illness often display common symptoms such as nausea, vomiting, diarrhea, or fever; so many people may not recognize the illness is caused by bacteria or other germs in food.
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Common symptoms include:
However, symptoms will vary according to the type of pathogen and by the severity of the disease.
Just about any food can become contaminated if handled improperly. However, foods rich in protein, such as meat, poultry, fish, and seafood, are frequently involved in foodborne illness outbreaks for two reasons:
Bacteria also need moisture in order to survive and reproduce. Thus, they thrive in foods with high moisture content. These include starchy, egg-rich foods, and cream-based foods, such as potato or pasta salads, cream-based soups, and custard or cream pies.
Raw foods of animal origin are the most likely to be contaminated; that is, raw meat and poultry, raw eggs, unpasteurized milk, and raw shellfish. Foods that mingle with the products of many individual animals, such as bulk raw milk, pooled raw eggs, or ground beef, are hazardous because a pathogen present in any one of these animals may contaminate the whole batch. Fruits and vegetables consumed raw are a particular concern. Washing can decrease but not eliminate contamination. Using water that’s not clean can contaminate many boxes of produce.
Fresh manure used to fertilize vegetables can also contaminate them. Unpasteurized fruit juice can also be contaminated if there are germs in or on the fruit that’s used to make it.
Symptoms can occur between hours or weeks after eating contaminated food. Symptoms typically don’t develop for several days after eating contaminated food. Symptoms of viral or parasitic illnesses may not appear for several weeks after exposure. Symptoms usually last only a day or two, but in some cases can persist a week to 10 days. For most healthy people, foodborne illnesses are neither long-lasting nor life-threatening.
However, they can be severe in the very young, the very old, and people with certain diseases and conditions (immune disorders, including HIV infection, liver disease, diabetes, etc.)
All suspected cases of foodborne illness should first be reported to your local health department. You can obtain the phone number for your local health department by contacting your borough/ township clerks’ office. Gloucester County residents can call 856-218-4102 to report the suspected foodborne illness. Food Service regulations for restaurants and other foodservice establishments, often based on the FDA Food Code, are developed by the States.
The health department in your State, city, or county inspects retail food service establishments and institutions. They also offer food service training courses and other programs. Seek medical attention if you experience bloody stools, fever greater than 101.5, dehydration, or diarrhea that lasts more than 3 days.
Individuals and their actions at home play an important role in food safety. To help prevent foodborne illness, food safety experts recommend the following four simple steps:
Customers expect good, safe food, clean surroundings, and pleasant service. The most important questions they can ask themselves are, "Is the hot food hot and the cold food cold?" and "Is my food thoroughly cooked?" If the answer to these questions is "no," send the food back. If you can see food workers at work, notice whether they are washing their hands when they come into the kitchen and whether they are using utensils or gloves when touching food that is ready to be served. Be certain there are warm water, soap, and paper towels in the restroom.
If there is no warm water, tell the management right away. If there is no soap or no towels, ask the manager to restock. An establishment that appears neat and clean generally gives the impression that the management cares about doing things right and well. However, cleanliness doesn’t correlate with safe food handling practices, nor does it guarantee the food is safe. View more information on the Gloucester County Health Food Establishment Inspection Ratings website.
The infection is diagnosed by specific laboratory testing during the illness which will identify the organism. In order for the diagnosis is to be made, the patient must seek medical attention, and the physician must decide to order diagnostic tests. Because many ill persons do not seek attention, many cases of foodborne illness go undiagnosed.
If a freezer stays at 0°F or lower, meats will keep for several months. Store roasts and whole poultry for 6 to 12 months; steaks and chops for 4 to 6 months, and ground meats or stew meats for 3 to 4 months. Cured and processed meats lose quality more rapidly than fresh meats because of the presence of salts. Don’t store luncheon meats, franks, ham, or sausage longer than 1 or 2 months.
Depending on the symptoms they cause, foodborne diseases may require different treatments. Illnesses that are primarily diarrhea or vomiting can lead to dehydration if the person loses more body fluids and salts (electrolytes) than they can take in. Replacing the lost fluids and electrolytes and keeping up with fluid intake is important. If diarrhea and cramps occur, without bloody stools or fever, taking an antidiarrheal medication may provide symptomatic relief, but these medications should be avoided if there is high fever, blood in the stools, or signs of infection because the antidiarrheal medication may make the illness worse.
Harmful germs - such as bacteria, viruses, and parasites - can be on food that if not handled or cooked safely can cause illness. Toxins (poisons) produced by certain bacteria can cause food intoxication (poisoning). Food can also be contaminated by chemicals such as pesticides, certain cleaning compounds, and sometimes by use of improper containers (pots) for cooking or storing food. When ingested in large amounts, these chemicals will cause serious foodborne illness. Food contamination can be caused by:
Some persons at particularly high risk should take more precautions.
Pregnant women, the elderly, and those weakened immune systems are at higher risk for severe infections such as Listeria and should be particularly careful not to consume undercooked animal products. They should avoid soft French style cheeses, pates, uncooked hot dogs, and sliced deli meats, which have been sources of Listeria infections. Persons at high risk should also avoid alfalfa sprouts and unpasteurized juices. A bottle-fed infant is at higher risk for severe infections with Salmonella or other bacteria that can grow in a bottle of warm formula if it is left at room temperature for many hours. Particular care is needed to be sure the baby’s bottle is cleaned and disinfected and that leftover milk formula or juice is not held in the bottle for many hours.
Persons with liver disease are susceptible to infections with a rare but dangerous microbe called Vibrio vulnificus, found in oysters. They should avoid eating raw oysters.
Bacteria must reach 160°F to ensure they are destroyed. Certainly boiling water (212°F) would be hot enough to destroy bacteria.
Freezing doesn’t kill all bacteria, yeasts and molds present in food, but it does prevent their multiplication if the food is held at 0°F or less. When thawed, the surviving organisms can multiply again and lead to foodborne illness.
To prevent food poisoning, take the following steps when preparing food:
View the Centers for Disease Control and Prevention Food frequently asked questions.