FOOD POISONING, IT’S CAUSES, EFFECT AND CONTROL
CHAPTER ONE
1.1 INTRODUCTION
Food poisoning might be described as a food borne diseases or food borne illness. Food that contains a toxin, chemical or infectious agent (like a bacterium, virus, parasite or prion) and causes symptoms in the body are considered types of food poisoning by most investigators.
Those symptoms may be related only to the gastrointestinal tract causing vomiting or diarrhea or may involve other organs such as the kidney, brain or muscle. (Charles, 2011).
Tribe et al., (2008) explains that food poisoning usually arises from improper handling, preparation or food storage. Good hygiene practice before, during and after food preparation can reduce the chances of contracting an illness. There is a consensus in the public health community that regular hand washing is one of the most effective defenses against the spread of food borne disease. The action of monitoring food to ensure that it will not cause food poisoning or diseases can also be caused by a large variety of toxins that affect the environment. Food borne illness can also be caused by substances like poisonous mushrooms or pathogenic microorganisms.
Tribe et al., (2008) further explains that bacteria are common cause of food borne illness. He further points out that in Nigeria during 2000, the individual bacteria involved were as follows.
Campylobacter jejumi 77.3%, salmonella 20.9%, Esherichia coli 1.4% and all other less than 0.1%.
In the past, bacterial infections were thought to be more preventive because few places had the capability to test for the particular agent.
Symptoms for bacterial infections are delayed because the bacteria need time to multiply. They are usually not seen until 12 – 72 hours or more after eating contaminated food.
Marases et al., (2007) highlighted that food poisoning/food borne diseases is caused by eating food or drinking beverages contaminated with bacteria, parasites or viruses. He further states that harmful chemicals can also cause food borne disease. If they have contaminated food during harvesting or processing. Food poisoning can cause symptoms which include diarrhea, fever, vomiting, abdominal cramps, and dehydration. Most food borne infections are undiagnosed and unreported, though the center for disease control and prevention estimates that every year, about 76 million people in the United States become ill from pathogens or disease causing substance in food, (Katon and Chessbrought 2000).
Joffe, et al., (2002) pointed out that harmful bacteria are the most common cause of food borne illness or food poisoning. Some bacteria may be present in foods when they are purchased. Raw foods are the most common sources of food poisoning because they are not sterile. Examples includes: raw meat and poultry that may have become contaminated during slaughter. Sea food may become contaminated during harvest or through processing. One in 10,000 eggs may be contaminated with salmonella spp inside the egg shall. Products such as spinach, lettuce, tomatoes, spronts and melons can become contaminated with Salmonella, Shigella or Esherichia coli. during growth or through processing and distribution. Contamination may also occur, during food preparation in a restaurant or at home kitchen.
