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Food-borne illnesses affect millions of Americans each year. Many persons who think they have the flu or a virus are really victims of mild cases of food poisoning, caused by bacteria and viruses found in food. Particularly vulnerable to these infections are young children, the elderly, pregnant women (because of the risk to the fetus), and persons with chronic or serious illnesses, whose immune systems are already weakened.
Most food-borne illnesses are caused by eating food containing certain types of bacteria or viruses. After a person has eaten these foods, the microorganisms continue to grow, causing an infection. Foods can also cause illness if they contain a toxin or poison produced by bacteria growing in food.
Several different kinds of bacteria can cause food poisoning. Some of the common bacteria include the following:
Hepatitis A and other viral diseases may be passed through the hands of infected persons onto the hands of food handlers or into sewage. Shellfish and other foods which may have been exposed to sewage-contaminated water can transmit these viral diseases.
Botulism is a rare but deadly form of food poisoning caused by Clostridium botulinum, which is found almost everywhere, including in soil and water. Low acid foods, such as meat, fish, poultry, or vegetables, that are improperly canned may be breeding grounds for this bacteria.
Unfortunately, most cases of food poisoning mimic gastroenteritis, and many people with mild cases of food poisoning think they have the "stomach flu." However, the onset of symptoms is usually very sudden and abrupt, often within hours of eating the contaminated food. The following are the most common symptoms of food poisoning. However, each individual may experience symptoms differently. Symptoms may include:
The symptoms of food poisoning may resemble other medical conditions or problems. Always consult your physician for a diagnosis.
Mild cases of food poisoning are often treated as gastroenteritis, with fluid replacement and control of nausea and vomiting being the primary focus. However, in serious cases of food poisoning, hospitalization may be necessary.