Foodborne illness (also foodborne disease and colloquially referred to as food poisoning)[1] is any illness Illness is a state of poor health. Illness is sometimes considered a synonym for disease. Others maintain that fine distinctions exist. Some have described illness as the subjective perception by a patient of an objectively defined disease resulting from the consumption of contaminated food.
There are two types of food poisoning: infectious agent and toxic agent. Food infection refers to the presence of bacteria or other microbes which infect the body after consumption. Food intoxication refers to the ingestion of toxins contained within the food, including bacterially produced exotoxins An exotoxin is a toxin excreted by a microorganism, including bacteria, fungi, algae, and protozoa. An exotoxin can cause damage to the host by destroying cells or disrupting normal cellular metabolism. They are highly potent and can cause major damage to the host. Exotoxins may be secreted, or, similar to endotoxins, may be released during lysis, which can happen even when the microbe that produced the toxin is no longer present or able to cause infection. In spite of the common term food poisoning, most cases are caused by a variety of pathogenic A pathogen, (from Greek πάθος pathos "suffering, passion", and γἰγνομαι gignomai (gen-) "I give birth to") an infectious agent, or more commonly germ, is a biological agent that causes disease to its host. There are several substrates and pathways whereby pathogens can invade a host; the principal pathways have bacteria The bacteria ( [bækˈtɪəriə] ; singular: bacterium)[α] are a large group of single-celled, prokaryote microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals. Bacteria are ubiquitous in every habitat on Earth, growing in soil, acidic hot springs, radioactive waste,, viruses A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a light microscope. Viruses infect all types of organisms, from animals and plants to bacteria and archaea. Since the initial discovery of tobacco mosaic virus by Martinus Beijerinck in 1898, about 5,, or parasites Parasitism is a type of symbiotic relationship between organisms of different species where one organism, the parasite, benefits at the expense of the host that contaminate food,[2] rather than chemical or natural toxins A toxin is a poisonous substance produced by living cells or organisms (although humans are technically living organisms, man-made substances created by artificial processes usually are not considered toxins by this definition). It was the organic chemist Ludwig Brieger (1849-1919) who first used the term 'toxin'.
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Signs and symptoms
Symptoms A symptom is a departure from normal function or feeling which is noticed by a patient, indicating the presence of disease or abnormality. A symptom is subjective, observed by the patient, and not measured typically begin several hours to several days after consumption and depending on the agent involved, can include one or more of the following: nausea Nausea , is a sensation of unease and discomfort in the upper stomach with an urge to vomit. An attack of nausea is known as a qualm, abdominal pain Abdominal pain can be one of the symptoms associated with transient disorders or serious disease. Making a definitive diagnosis of the cause of abdominal pain can be difficult, because many diseases can result in this symptom. Abdominal pain is a common problem. Most frequently the cause is benign and/or self-limited, but more serious causes may, vomiting Vomiting is the forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Vomiting may result from many causes, ranging from gastritis or poisoning to brain tumors, or elevated intracranial pressure. The feeling that one is about to vomit is called nausea, which usually precedes, but does not always lead to,, diarrhea Diarrhea , also spelled diarrhoea, is the condition of having three or more loose or liquid bowel movements per day. It is a common cause of death in developing countries and the second most common cause of infant deaths worldwide. The loss of fluids through diarrhea can cause dehydration and electrolyte imbalances. In 2009 diarrhea was estimated, gastroenteritis Gastroenteritis is inflammation of the gastrointestinal tract, involving both the stomach and the small intestine and resulting in acute diarrhea. It can be transferred by contact with contaminated food and water. The inflammation is caused most often by an infection from certain viruses or less often by bacteria, their toxins, parasites, or an, fever Fever is a common medical sign characterized by an elevation of temperature above the normal range of 36.5–37.5 °C (98–100 °F) due to an increase in the body temperature regulatory set-point. This increase in set-point triggers increased muscle tone and shivering, headache A headache or cephalgia is pain anywhere in the region of the head or neck. It can be a symptom of a number of different conditions of the head and neck. The brain tissue itself is not sensitive to pain because it lacks pain receptors. Rather, the pain is caused by disturbance of the pain-sensitive structures around the brain. Several areas of the or fatigue Fatigue is a state of awareness. It can describe a range of afflictions, varying from a general state of lethargy to a specific work-induced burning sensation within one's muscles. It can be both physical and mental. Physical fatigue is the inability to continue functioning at the level of one's normal abilities. It is ubiquitous in everyday life,.
In most cases the body is able to permanently recover after a short period of acute This adjective is part of the definition of several diseases and is, therefore, incorporated in their name, for instance, severe acute respiratory syndrome, acute leukemia discomfort and illness. However, foodborne illness can result in permanent health problems or even death, especially for people at high risk, including babies The term infant derives from the Latin word infans, meaning "unable to speak or speechless." It is typically applied to children between the ages of 1 month and 12 months; however, definitions vary between birth and 3 years of age, young children, pregnant Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Childbirth usually occurs about 38 weeks after conception; i.e., approximately 40 weeks women (and their fetuses A fetus is a developing mammal or other viviparous vertebrate after the embryonic stage and before birth), elderly Old age consists of ages nearing or surpassing the average life span of human beings, and thus the end of the human life cycle. Euphemisms and terms for old people include seniors (American usage), senior citizens (British and American usage) and the elderly. As occurs with almost any definable group of humanity, some people will hold a prejudice people, sick A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs. It may be caused by external factors, such as infectious disease, or it may be caused by internal disfunctions, such as autoimmune diseases people and others with weak immune systems An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens and tumor cells. It detects a wide variety of agents, from viruses to parasitic worms, and needs to distinguish them from the organism's own healthy cells and tissues in order to function.
Foodborne illness due to campylobacter, yersinia, salmonella or shigella infection is a major cause of reactive arthritis Reactive arthritis is an autoimmune condition that develops in response to an infection in another part of the body. Coming into contact with bacteria and developing an infection can trigger reactive arthritis. It has symptoms similar to various other conditions collectively known as "arthritis," such as rheumatism. It is caused by, which typically occurs 1–3 weeks after diarrheal illness. Similarly, people with liver The liver is a vital organ present in vertebrates and some other animals. It has a wide range of functions, including detoxification, protein synthesis, and production of biochemicals necessary for digestion. The liver is necessary for survival; there is currently no way to compensate for the absence of liver function disease are especially susceptible to infections from Vibrio vulnificus Vibrio vulnificus is a species of Gram-negative, motile, curved, rod-shaped bacteria in the genus Vibrio. It was first reported by Hollis et al. (J. Clin. Microbiol.) in 1976. It was subsequently given the name Beneckea vulnifica by Reichelt et al. in 1976 (Archives Microbiology), and finally Vibrio vulnificus by Farmer in 1979 (Lancet). Present, which can be found in oysters The word oyster is used as a common name for a number of distinct groups of bivalve molluscs which live in marine or brackish habitats. The valves are highly calcified or crabs.
Tetrodotoxin Tetrodotoxin is a potent neurotoxin with no known antidote. There have been successful tests of a possible antidote in mice, but further tests must be carried out to determine efficacy in humans. Tetrodotoxin blocks action potentials in nerves by binding to the pores of the voltage-gated, fast sodium channels in nerve cell membranes, essentially poisoning from reef fish and other animals manifests rapidly as numbness Paraesthesia , and also known as cacaesthesia is a sensation of tingling, pricking, or numbness of a person's skin with no apparent long-term physical effect. It is more generally known as the feeling of "pins and needles" or of a limb "falling asleep" (although this is not directly related to the phenomenon of sleep). The and shortness of breath Dyspnea or dyspnoea , (from Latin dyspnoea, from Greek dyspnoia from dyspnoos, shortness of breath), also called shortness of breath (SOB) or air hunger, is a debilitating symptom that is the experience of unpleasant or uncomfortable respiratory sensations. It is a common symptom of numerous medical disorders, particularly those involving the, and is often fatal.
Causes
See also: Pathogen A pathogen, (from Greek πάθος pathos "suffering, passion", and γἰγνομαι gignomai (gen-) "I give birth to") an infectious agent, or more commonly germ, is a biological agent that causes disease to its host. There are several substrates and pathways whereby pathogens can invade a host; the principal pathways have Poorly stored food in a refrigeratorFoodborne illness usually arises from improper handling, preparation, or food storage Grain is stored in rigid sealed containers to prevent ingress of moisture or attack by vermin. For domestic quantities metal cans are used. Good hygiene Hygiene is an old concept related to medicine, as well as to personal and professional care practices related to most aspects of living. In medicine and in home and everyday life settings, hygiene practices are employed as preventative measures to reduce the incidence and spreading of disease. In the manufacture of food, pharmaceutical, cosmetic practices before, during, and after food preparation can reduce the chances of contracting an illness. There is a general consensus in the public health community that regular hand-washing is one of the most effective defenses against the spread of foodborne illness. The action of monitoring food to ensure that it will not cause foodborne illness is known as food safety Food safety is a scientific discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness. This includes a number of routines that should be followed to avoid potentially severe health hazards. Food can transmit disease from person to person as well as serve as a growth medium for bacteria that can cause. Foodborne disease can also be caused by a large variety of toxins that affect the environment. For foodborne illness caused by chemicals, see Food contaminants Food contamination refers to the presence in food of harmful chemicals and microorganisms which can cause consumer illness. This article addresses the chemical contamination of foods, as opposed to microbiological contamination, which can be found under Foodborne illness. A separate issue is genetically modified food, or the presence in foods of.
Foodborne illness can also be caused by pesticides A pesticide is any substance or mixture of substances intended for preventing, destroying, repelling or mitigating any pest. A pesticide may be a chemical substance, biological agent , antimicrobial, disinfectant or device used against any pest. Pests include insects, plant pathogens, weeds, molluscs, birds, mammals, fish, nematodes (roundworms), or medicines Medicine is the science and art of healing. It encompasses a range of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Before scientific medicine, healing arts were practised in accordance with alchemical treatments and ritual practices that developed out of religious and cultural traditions in food and naturally toxic substances like poisonous mushrooms Mushroom poisoning, also known as mycetism, refers to harmful effects from ingestion of toxic substances present in a mushroom. These symptoms can vary from slight gastrointestinal discomfort to death. The toxins present are secondary metabolites produced in specific biochemical pathways in the fungal cells. Mushroom poisoning is usually the or reef fish Tetrodotoxin is a potent neurotoxin with no known antidote. There have been successful tests of a possible antidote in mice, but further tests must be carried out to determine efficacy in humans. Tetrodotoxin blocks action potentials in nerves by binding to the pores of the voltage-gated, fast sodium channels in nerve cell membranes, essentially.
Bacteria
Bacteria The bacteria ( [bækˈtɪəriə] ; singular: bacterium)[α] are a large group of single-celled, prokaryote microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals. Bacteria are ubiquitous in every habitat on Earth, growing in soil, acidic hot springs, radioactive waste, are a common cause of foodborne illness. In the United Kingdom The United Kingdom of Great Britain and Northern Ireland[note 7] is a sovereign state located off the northwestern coast of continental Europe. It is an island country, spanning an archipelago including Great Britain, the northeastern part of the island of Ireland, and many small islands. Northern Ireland is the only part of the UK with a land during 2000 the individual bacteria involved were as follows: Campylobacter jejuni Campylobacter jejuni is a species of curved, rod-shaped, non-spore forming, Gram-negative microaerophilic, bacteria commonly found in animal feces. It is one of the most common causes of human gastroenteritis in the world. Food poisoning caused by Campylobacter species can be severely debilitating but is rarely life-threatening. It has been linked 77.3%, Salmonella Salmonella is a genus of rod-shaped, Gram-negative, non-spore forming, predominantly motile enterobacteria with diameters around 0.7 to 1.5 µm, lengths from 2 to 5 µm, and flagella which project in all directions . They are chemoorganotrophs, obtaining their energy from oxidation and reduction reactions using organic sources, and are facultative 20.9%, Escherichia coli O157:H7 Escherichia coli O157:H7 is an enterohemorrhagic strain of the bacterium Escherichia coli and a cause of foodborne illness. Infection often leads to hemorrhagic diarrhea, and occasionally to kidney failure, especially in young children and elderly. Most illness has been associated with eating undercooked, contaminated ground beef, drinking 1.4%, and all others less than 0.1%.[3] In the past, bacterial infections were thought to be more prevalent because few places had the capability to test for norovirus Norovirus is an RNA virus (taxonomic family Caliciviridae) that causes approximately 90% of epidemic non-bacterial outbreaks of gastroenteritis around the world, and may be responsible for 50% of all foodborne outbreaks of gastroenteritis in the US. Norovirus affects people of all ages. The viruses are transmitted by faecally contaminated food or and no active surveillance was being done for this particular agent. Symptoms for bacterial infections are delayed because the bacteria need time to multiply. They are usually not seen until 12–72 hours The hour is a unit of time. It is not an SI unit but is accepted for use with the SI with the symbol h or more after eating contaminated food.
Most common bacterial foodborne pathogens are:
- Campylobacter jejuni The genus Campylobacter, first discovered in 1963, describes Gram-negative, spiral, microaerophilic bacteria. Motile, with either uni- or bi-polar flagella, the organisms have a characteristic spiral/corkscrew appearance (see photo) and are oxidase-positive.Campylobacter jejuni is now recognized as one of the main causes of bacterial foodborne which can lead to secondary Guillain–Barré syndrome and periodontitis Periodontitis is a set of inflammatory diseases affecting the periodontium — that is, the tissues that surround and support the teeth. Periodontitis involves progressive loss of the alveolar bone around the teeth, and if left untreated, can lead to the loosening and subsequent loss of teeth. Periodontitis is caused by microorganisms that adhere[4]
- Clostridium perfringens Clostridium perfringens is a Gram-positive, rod-shaped, anaerobic, spore-forming bacterium of the genus Clostridium. C. perfringens is ubiquitous in nature and can be found as a normal component of decaying vegetation, marine sediment, the intestinal tract of humans and other vertebrates, insects, and soil, the "cafeteria germ"[5]
- Salmonella Salmonella is a genus of rod-shaped, Gram-negative, non-spore forming, predominantly motile enterobacteria with diameters around 0.7 to 1.5 µm, lengths from 2 to 5 µm, and flagella which project in all directions . They are chemoorganotrophs, obtaining their energy from oxidation and reduction reactions using organic sources, and are facultative spp. – its S. typhimurium infection is caused by consumption of eggs that are not adequately cooked or by other interactive human-animal pathogens[6][7][8] Salmonella
- Escherichia coli O157:H7 enterohemorrhagic (EHEC) which causes hemolytic-uremic syndrome
Other common bacterial foodborne pathogens are:
- Bacillus cereus
- Escherichia coli, other virulence properties, such as enteroinvasive (EIEC), enteropathogenic (EPEC), enterotoxigenic (ETEC), enteroaggregative (EAEC or EAgEC)
- Listeria monocytogenes
- Shigella spp.
- Staphylococcus aureus
- Streptococcus
- Vibrio cholerae, including O1 and non-O1
- Vibrio parahaemolyticus
- Vibrio vulnificus
- Yersinia enterocolitica and Yersinia pseudotuberculosis
Less common bacterial agents:
- Brucella spp.
- Corynebacterium ulcerans
- Coxiella burnetii or Q fever
- Plesiomonas shigelloides
Exotoxins
In addition to disease caused by direct bacterial infection, some foodborne illnesses are caused by exotoxins which are excreted by the cell as the bacterium grows. Exotoxins can produce illness even when the microbes that produced them have been killed. Symptoms typically appear after 1–6 hours depending on the amount of toxin ingested.
For example Staphylococcus aureus produces a toxin that causes intense vomiting. The rare but potentially deadly disease botulism occurs when the anaerobic bacterium Clostridium botulinum grows in improperly canned low-acid foods and produces botulin, a powerful paralytic toxin.
Pseudoalteromonas tetraodonis, certain species of Pseudomonas and Vibrio, and some other bacteria, produce the lethal tetrodotoxin, which is present in the tissues of some living animal species rather than being a product of decomposition.
Mycotoxins and alimentary mycotoxicoses
The term alimentary mycotoxicoses refers to the effect of poisoning by Mycotoxins through food consumption. Mycotoxins sometimes have important effects on human and animal health. For example, an outbreak which occurred in the UK in 1960 caused the death of 100,000 turkeys which had consumed aflatoxin-contaminated peanut meal. In the USSR in World War II, 5000 people died due to Alimentary Toxic Aleukia (ALA).[9] The common foodborne Mycotoxins include:
- Aflatoxins – originated from Aspergillus parasiticus and Aspergillus flavus. They are frequently found in tree nuts, peanuts, maize, sorghum and other oilseeds, including corn and cottonseeds. The pronounced forms of Aflatoxins are those of B1, B2, G1, and G2, amongst which Aflatoxin B1 predominantly targets the liver, which will result in necrosis, cirrhosis, and carcinoma.[10][11] In the US, the acceptable level of total aflatoxins in foods is less than 20 μg/kg, except for Aflatoxin M1 in milk, which should be less than 0.5 μg/kg.[12] The official document can be found at FDA's website.[13][14]
- Altertoxins – are those of Alternariol (AOH), Alternariol methyl ether (AME), Altenuene (ALT), Altertoxin-1 (ATX-1), Tenuazonic acid (TeA) and Radicinin (RAD), originated from Alternaria spp. Some of the toxins can be present in sorghum, ragi, wheat and tomatoes.[15][16][17] Some research has shown that the toxins can be easily cross-contaminated between grain commodities, suggesting that manufacturing and storage of grain commodities is a critical practice.[18]
- Citrinin
- Citreoviridin
- Cyclopiazonic acid
- Cytochalasins
- Ergot alkaloids / Ergopeptine alkaloids – Ergotamine
- Fumonisins – Crop corn can be easily contaminated by the fungi Fusarium moniliforme, and its Fumonisin B1 will cause Leukoencephalomalacia (LEM) in horses, Pulmonary edema syndrome (PES) in pigs, liver cancer in rats and Esophageal cancer in humans.[19][20] For human and animal health, both the FDA and the EC have regulated the content levels of toxins in food and animal feed.[21][22]
- Fusaric acid
- Fusarochromanone
- Kojic acid
- Lolitrem alkaloids
- Moniliformin
- 3-Nitropropionic acid
- Nivalenol
- Ochratoxins – In Australia, The Limit of Reporting (LOR) level for Ochratoxin A (OTA) analyses in 20th Australian Total Diet Survey was 1 µg/kg,[23] whereas the EC restricts the content of OTA to 5 µg/kg in cereal commodities, 3 µg/kg in processed products and 10 µg/kg in dried vine fruits.[24]
- Oosporeine
- Patulin – Currently, this toxin has been advisably regulated on fruit products. The EC and the FDA have limited it to under 50 µg/kg for fruit juice and fruit nectar, while limits of 25 µg/kg for solid-contained fruit products and 10 µg/kg for baby foods were specified by the EC.[24][25]
- Phomopsins
- Sporidesmin A
- Sterigmatocystin
- Tremorgenic mycotoxins – Five of them have been reported to be associated with molds found in fermented meats. These are Fumitremorgen B, Paxilline, Penitrem A, Verrucosidin, and Verruculogen.[26]
- Trichothecenes – sourced from Cephalosporium, Fusarium, Myrothecium, Stachybotrys and Trichoderma. The toxins are usually found in molded maize, wheat, corn, peanuts and rice, or animal feed of hay and straw.[27][28] Four trichothecenes, T-2 toxin, HT-2 toxin, diacetoxyscirpenol (DAS) and deoxynivalenol (DON) have been most commonly encountered by humans and animals. The consequences of oral intake of, or dermal exposure to, the toxins will result in Alimentary toxic aleukia, neutropenia, aplastic anemia, thrombocytopenia and/or skin irritation.[29][30][31] In 1993, the FDA issued a document for the content limits of DON in food and animal feed at an advisory level.[32] In 2003, US published a patent that is very promising for farmers to produce a trichothecene-resistant crop.[33]
- Zearalenone
- Zearalenols
Emerging foodborne pathogens
Many foodborne illnesses remain poorly understood. Approximately sixty percent of outbreaks are caused by unknown sources.[citation needed]
- Aeromonas hydrophila, Aeromonas caviae, Aeromonas sobria
Preventing bacterial food poisoning
Proper storage and refrigeration of food help in the prevention of food poisoningPrevention is mainly the role of the state, through the definition of strict rules of hygiene and a public services of veterinary surveying of animal products in the food chain, from farming to the transformation industry and delivery (shops and restaurants). This regulation includes:
- traceability: in a final product, it must be possible to know the origin of the ingredients (originating farm, identification of the harvesting or of the animal) and where and when it was processed; the origin of the illness can thus be tracked and solved (and possibly penalized), and the final products can be removed from the sale if a problem is detected;
- enforcement of hygiene procedures like HACCP and the "cold chain";
- power of control and of law enforcement of veterinarians.
In August 2006, the United States Food and Drug Administration approved Phage therapy which involves spraying meat with viruses that infect bacteria, and thus preventing infection. This has raised concerns, because without mandatory labelling consumers wouldn't be aware that meat and poultry products have been treated with the spray. [1]
At home, prevention mainly consists of good food safety practices. Many forms of bacterial poisoning can be prevented even if food is contaminated by cooking it sufficiently, and either eating it quickly or refrigerating it effectively[citation needed]. Many toxins, however, are not destroyed by heat treatment.
Viruses
Viral infections make up perhaps one third of cases of food poisoning in developed countries. In the US, more than 50% of cases are viral and noroviruses are the most common foodborne illness, causing 57% of outbreaks in 2004. Foodborne viral infection are usually of intermediate (1–3 days) incubation period, causing illnesses which are self-limited in otherwise healthy individuals, and are similar to the bacterial forms described above.
- Enterovirus
- Hepatitis A is distinguished from other viral causes by its prolonged (2–6 week) incubation period and its ability to spread beyond the stomach and intestines, into the liver. It often induces jaundice, or yellowing of the skin, and rarely leads to chronic liver dysfunction. The virus has been found to cause the infection due to the consumption of fresh-cut produce which has fecal contamination.[34][35]
- Hepatitis E
- Norovirus
- Rotavirus Rotavirus
Parasites
Most foodborne parasites are zoonoses.
- Platyhelminthes:
- Diphyllobothrium sp.
- Nanophyetus sp.
- Taenia saginata
- Taenia solium The scolex of Tenia solium
- Fasciola hepatica
- Nematode:
- Anisakis sp.
- Ascaris lumbricoides
- Eustrongylides sp.
- Trichinella spiralis
- Trichuris trichiura
- Protozoa:
- Acanthamoeba and other free-living amoebae
- Cryptosporidium parvum
- Cyclospora cayetanensis
- Entamoeba histolytica
- Giardia lamblia Giardia lamblia
- Sarcocystis hominis
- Sarcocystis suihominis
- Toxoplasma gondii
Natural toxins
Several foods can naturally contain toxins, many of which are not produced by bacteria. Plants in particular may be toxic; animals which are naturally poisonous to eat are rare. In evolutionary terms, animals can escape being eaten by fleeing; plants can use only passive defenses such as poisons and distasteful substances, for example capsaicin in chili peppers and pungent sulfur compounds in garlic and onions. Most animal poisons are not synthesised by the animal, but acquired by eating poisonous plants to which the animal is immune, or by bacterial action.
- Alkaloids
- Ciguatera poisoning
- Grayanotoxin (honey intoxication)
- Mushroom toxins
- Phytohaemagglutinin (red kidney bean poisoning; destroyed by boiling)
- Pyrrolizidine alkaloids
- Shellfish toxin, including paralytic shellfish poisoning, diarrhetic shellfish poisoning, neurotoxic shellfish poisoning, amnesic shellfish poisoning and ciguatera fish poisoning
- Scombrotoxin
- Tetrodotoxin (fugu fish poisoning)
Some plants contain substances which are toxic in large doses, but have therapeutic properties in appropriate dosages.
- Foxglove contains cardiac glycosides.
- Poisonous hemlock (conium) has medicinal uses.
Other pathogenic agents
- Prions, resulting in Creutzfeldt-Jakob disease
"Ptomaine poisoning"
An early theory on the causes of food poisoning involved ptomaines (from Greek ptōma, "fall, fallen body, corpse"), alkaloids found in decaying animal and vegetable matter. While some alkaloids do cause poisoning, the discovery of bacteria left the ptomaine theory obsolete and the word ptomaine is no longer used scientifically.
Mechanism
Incubation period
The delay between consumption of a contaminated food and appearance of the first symptoms of illness is called the incubation period. This ranges from hours to days (and rarely months or even years, such as in the case of Listeriosis or Creutzfeldt-Jacob disease), depending on the agent, and on how much was consumed. If symptoms occur within 1–6 hours after eating the food, it suggests that it is caused by a bacterial toxin or a chemical rather than live bacteria.
The long incubation period of many foodborne illnesses tends to cause sufferers to attribute their symptoms to "stomach flu".
During the incubation period, microbes pass through the stomach into the intestine, attach to the cells lining the intestinal walls, and begin to multiply there. Some types of microbes stay in the intestine, some produce a toxin that is absorbed into the bloodstream, and some can directly invade the deeper body tissues. The symptoms produced depend on the type of microbe.[36]
Infectious dose
The infectious dose is the amount of agent that must be consumed to give rise to symptoms of foodborne illness, and varies according to the agent and the consumer's age and overall health. In the case of Salmonella a relatively large inoculum of 1 million to 1 billion organisms is necessary to produce symptoms in healthy human volunteers[2], as Salmonellae are very sensitive to acid. An unusually high stomach pH level (low acidity) greatly reduces the number of bacteria required to cause symptoms by a factor of between 10 and 100.
Epidemiology
Every year there are an estimated 76 million foodborne illnesses in the United States (26,000 cases for 100,000 inhabitants), 2 million in the United Kingdom (3,400 cases for 100,000 inhabitants) and 750,000 in France (1,210 cases for 100,000 inhabitants).
United States
In the United States, using FoodNet data from 1996-1998, the CDCP estimated there were 76 million foodborne illnesses (26,000 cases for 100,000 inhabitants):[37]
- 325,000 were hospitalized (111 per 100,000 inhabitants);
- 5,000 people died (1.7 per 100,000 inhabitants.).
- Major pathogens from foodborne illness in the United States cost upwards of US $35 billion in medical costs and lost productivity (1997)
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France
In France, for 750,000 cases(1,210 per 100,000 inhabitants):
- 70,000 people consulted in the emergency department of an hospital (113 per 100,000 inhabitants.);
- 113,000 people were hospitalized (24 per 100,000 inhabitants);
- 400 people died (0.9 per 100,000 inhabitants).
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Australia
In Australia, there are an estimated 5.4 million cases of food-borne illness every year, causing:[40]
- 18,000 hospitalisations
- 120 deaths
- 2.1 million lost days off work
- 1.2 million doctor consultations
- 300,000 prescriptions for antibiotics
Outbreaks
The vast majority of reported cases of foodborne illness occur as individual or sporadic cases. The origin of most sporadic cases is undetermined. In the United States, where people eat outside the home frequently, most outbreaks (58%) originate from commercial food facilities (2004 FoodNet data). An outbreak is defined as occurring when two or more people experience similar illness after consuming food from a common source.
Often, a combination of events contributes to an outbreak, for example, food might be left at room temperature for many hours, allowing bacteria to multiply which is compounded by inadequate cooking which results in a failure to kill the dangerously elevated bacterial levels.
Outbreaks are usually identified when those affected know each other. However, more and more, outbreaks are identified by public health staff from unexpected increases in laboratory results for certain strains of bacteria. Outbreak detection and investigation in the United States is primarily handled by local health jurisdictions and is inconsistent from district to district. It is estimated that 1–2% of outbreaks are detected.
Society and culture
Global impact
In modern times, rapid globalization of food production and trade has increased the potential likelihood of food contamination. Many outbreaks of foodborne diseases that were once contained within a small community may now take place on global dimensions. Food safety authorities all over the world have acknowledged that ensuring food safety must not only be tackled at the national level but also through closer linkages among food safety authorities at the international level. This is important for exchanging routine information on food safety issues and to have rapid access to information in case of food safety emergencies."
It is difficult to estimate the global incidence of foodborne disease, but it has been reported that in the year 2000 about 2.1 million people died from diarrhoeal diseases. Many of these cases have been attributed to contamination of food and drinking water. Additionally, diarrhoea is a major cause of malnutrition in infants and young children.
Even in industrialized countries, up to 30% of the population of people have been reported to suffer from foodborne diseases every year. In the U.S, around 76 million cases of foodborne diseases, which resulted in 325,000 hospitalizations and 5,000 deaths, are estimated to occur each year. Developing countries in particular, are worst affected by foodborne illnesses due to the presence of a wide range of diseases, including those caused by parasites. Foodborne illnesses can and did inflict serious and extensive harm on society. In 1994, an outbreak of salmonellosis due to contaminated ice cream occurred in the USA, affecting an estimated 224,000 persons. In 1988, an outbreak of hepatitis A, resulting from the consumption of contaminated clams, affected some 300,000 individuals in China.
Food contamination creates an enormous social and economic strain on societies. In the U.S., diseases caused by the major pathogens alone are estimated to cost up to US $35 billion annually (1997) in medical costs and lost productivity. The re-emergence of cholera in Peru in 1991 resulted in the loss of US $500 million in fish and fishery product exports that year.
United Kingdom
In postwar Aberdeen (1964) a large scale (>400 cases) outbreak of Typhoid occurred, this was caused by contaminated corned beef which had been imported from Argentina[41] The corned beef was placed in cans and because the cooling plant had failed, cold river water from the Plate estuary was used to cool the cans. One of the cans had a defect and the meat inside was contaminated. This meat was then sliced using a meat slicer in a shop in Aberdeen, and a lack of cleaning the machinery lead to spreading the contamination to other meats cut in the slicer. These meats were then eaten by the people of Aberdeen who then became ill.
In the UK serious outbreaks of food-borne illness since the 1970s prompted key changes in UK food safety law. These included the death of 19 patients in the Stanley Royd Hospital outbreak [3] and the bovine spongiform encephalopathy (BSE, mad cow disease) outbreak identified in the 1980s. The death of 17 people in the 1996 Wishaw outbreak of E. coli O157 [4] was a precursor to the establishment of the Food Standards Agency which, according to Tony Blair in the 1998 white paper A Force for Change Cm 3830 "would be powerful, open and dedicated to the interests of consumers".
United States
In 1999 an estimated 5,000 deaths, 325,000 hospitalizations and 76 million illnesses were foodborne in the US.[42][43][44]
In 2001, the Center for Science in the Public Interest petitioned the United States Department of Agriculture to require meat packers to remove spinal cords before processing cattle carcasses for human consumption, a measure designed to lessen the risk of infection by variant Creutzfeldt-Jakob disease. The petition was supported by the American Public Health Association, the Consumer Federation of America, the Government Accountability Project, the National Consumers League, and Safe Tables Our Priority. This was opposed by the National Cattlemen's Beef Association, the National Renderers Association, the National Meat Association, the Pork Producers Council, sheep raisers, milk producers, the Turkey Federation, and eight other organizations from the animal-derived food industry. This was part of a larger controversy regarding the United States' violation of World Health Organization proscriptions to lessen the risk of infection by variant Creutzfeldt-Jakob disease.[citation needed]
None of the US Department of Health and Human Services targets[45] regarding incidence of foodborne infections were reached in 2007.[46]
Organizations
- World Health Organization Food Safety Department
- The WHO provides scientific advice for organizations and the public on issues concerning the safety of food. It serves as a medium linking the food safety systems in countries around the world. Food safety is currently one of WHO's top ten priorities. Food Safety is one of the major issues in our world today, and the Organization calls for more systematic and aggressive steps to be taken to significantly reduce the risk of foodborne diseases.
- The Department of Food Safety, Zoonoses and Foodborne Diseases
- The Department of Food Safety, Zoonoses and Foodborne Diseases is a department under the WHO. Its mission is to: to reduce the serious negative impact of foodborne diseases worldwide. According to the WHO website, food and waterborne diarrhoeal diseases are leading causes of illness and death in less developed countries, killing approximately 3.8 million people annually, most of whom are children.
WHO works closely with the Food and Agriculture Organization of the United Nations (FAO) to address food safety issues along the entire food production chain--from production to consumption--using new methods of risk analysis. These methods provide efficient, science-based tools to improve food safety, thereby benefiting both public health and economic development.
- The International Food Safety Authorities Network (INFOSAN)
- This network is intended to complement and support the existing WHO Global Outbreak Alert and Response Network (GOARN) which includes a Chemical Alert and Response component.
See also
References
- ^ food poisoning at Dorland's Medical Dictionary
- ^ US CDC food poisoning guide
- ^ Food Standards Agency
- ^ Humphrey, Tom et al.; O'Brien, S; Madsen, M (2007). "Campylobacters as zoonotic pathogens: A food production perspective <internet>". International Journal of Food Microbiology 117 (3): 237. doi:10.1016/j.ijfoodmicro.2007.01.006. PMID 17368847. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T7K-4N0PPRG-1&_user=10&_coverDate=07%2F15%2F2007&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=74b7c07635a1873ca815b3139b56d2e0.
- ^ USDA. [http://www.fsis.usda.gov/Fact_Sheets/Foodborne_Illness_What_Consumers_Need_to_Know/index.asp "Foodborne Illness: What Consumers Need to Know"]. http://www.fsis.usda.gov/Fact_Sheets/Foodborne_Illness_What_Consumers_Need_to_Know/index.asp. Retrieved 2008.
- ^ Tribe, Ingrid G. et al.. "An outbreak of Salmonella typhimurium phage type 135 infection linked to the consumption of raw shell eggs in an aged care facility <internet>". http://www.health.gov.au/internet/main/Publishing.nsf/Content/cda-pubs-cdi-2002-cdi2601-cdi2601h.htm. Retrieved 29 August 2008.
- ^ Centers for Disease Control and Prevention. "Salmonella Infection (salmonellosis) and Animals <internet>". http://www.cdc.gov/healthypets/diseases/salmonellosis.htm. Retrieved 12 August 2007.
- ^ Doyle, M. P.; M. C. Erickson. "Reducing the carriage of foodborne pathogens in livestock and poultry <internet>" (PDF). http://www.poultryscience.org/ps/paperpdfs/06/p0660960.pdf. Retrieved 12 August 2007.
- ^ E. Mount, Michael. "Fungi and Mycotoxins <internet>" (PDF). http://www.vetmed.ucdavis.edu/PHR/PHR250/2007/25007Myc.pdf. Retrieved 11 August 2007.
- ^ Center for Food Safety & Applied Nutrition. "Aflatoxins <internet>". http://www.fda.gov/Food/FoodSafety/FoodborneIllness/FoodborneIllnessFoodbornePathogensNaturalToxins/BadBugBook/ucm071020.htm. Retrieved 12 August 2007.
- ^ Food and Agriculture Organization of the United Nations. "GASGA Technical Leaflet - 3 Mycotoxins in Grain <internet>". http://www.fao.org/Wairdocs/X5008E/X5008e01.htm. Retrieved 12 August 2007.
- ^ World Health Organization. "Chapter 2 Foodborne Hazards in Basic Food Safety for Health Workers <internet>" (PDF). http://www.who.int/entity/foodsafety/publications/capacity/en/2.pdf. Retrieved 12 August 2007.
- ^ Food and Drug Administration. "Sec. 683.100 Action Levels for Aflatoxins in Animal Feeds (CPG 7126.33) <internet>". http://www.fda.gov/ora/compliance_ref/cpg/cpgvet/cpg683-100.html. Retrieved 13 August 2007.
- ^ | publisher = | accessdate = 13 August 2007 | url = http://www.fda.gov/cvm/fdaaustintx823.htm}}
- ^ Webley, D. J. et al.. "Alternaria toxins in weather-damaged wheat and sorghum in the 1995-1996 Australian harvest <internet>". http://www.publish.csiro.au/paper/A97005.htm. Retrieved 13 August 2007.
- ^ Li, Feng-qin; Takumi Yoshizawa. "Alternaria Mycotoxins in Weathered Wheat from China <internet>". http://pubs.acs.org/cgi-bin/abstract.cgi/jafcau/2000/48/i07/abs/jf0000171.html. Retrieved 13 August 2007.
- ^ da Motta, Silvana; Lucia M. Valente Soares. "Survey of Brazilian tomato products for alternariol, alternariol monomethyl ether, tenuazonic acid and cyclopiazonic acid <internet>". http://www.informaworld.com/smpp/content~content=a713810863~db=all. Retrieved 13 August 2007.
- ^ Li, F. Q. et al.. "Production of Alternaria Mycotoxins by Alternaria alternata Isolated from Weather-Damaged Wheat <internet>". http://www.ingentaconnect.com/content/iafp/jfp/2001/00000064/00000004/art00025. Retrieved 13 August 2007.
- ^ Marasas, Walter F. O.. "Fumonisins: Their implications for human and animal health <internet>". http://www3.interscience.wiley.com/cgi-bin/abstract/112640083/ABSTRACT?CRETRY=1&SRETRY=0. Retrieved 12 August 2007.
- ^ Soriano, J.M.; S. Dragacci. "Occurrence of fumonisins in foods <internet>". http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T6V-4D636PW-1&_user=10&_coverDate=01%2F01%2F2004&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=4a033a232e75e4ebf3ee269c06744491. Retrieved 12 August 2007.
- ^ Food and Drug Administration. "CVM and Fumonisins <internet>". http://www.fda.gov/cvm/fumonisin.htm. Retrieved 13 August 2007.
- ^ Food Standards Agency. "More contaminated maize meal products withdrawn from sale <internet>". http://www.food.gov.uk/news/newsarchive/2003/sep/moremaize. Retrieved 12 August 2007.
- ^ Food Standards Australia New Zealand. "20th Australian Total Diet Survey – Part B <internet>". http://www.foodstandards.gov.au/newsroom/publications/20thaustraliantotaldietsurveyjanuary2003/20thaustraliantotaldietsurveyfullreport/partb20thatds/partbmetals.cfm. Retrieved 13 August 2007.
- ^ a b FAO FOOD AND NUTRITION PAPER 81. "Worldwide regulations for mycotoxins in food and feed in 2003 <internet>". http://www.fao.org/docrep/007/y5499e/y5499e0f.htm. Retrieved 13 August 2007.
- ^ Food and Drug Administration. "Patulin in Apple Juice, Apple Juice Concentrates and Apple Juice Products <internet>". http://vm.cfsan.fda.gov/~dms/patubckg.html. Retrieved 16 August 2007.
- ^ Sabater-Vilar, M.. "Genotoxicity Assessment of Five Tremorgenic Mycotoxins (Fumitremorgen B, Paxilline, Penitrem A, Verruculogen, and Verrucosidin) Produced by Molds Isolated from Fermented Meats <internet>". http://www.ingentaconnect.com/content/iafp/jfp/2003/00000066/00000011/art00023. Retrieved 16 August 2007.
- ^ Adejumo, Timothy O.. "Occurrence of Fusarium species and trichothecenes in Nigerian maize <internet>". Elsevier. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T7K-4N5CX4H-3&_user=10&_coverDate=05%2F30%2F2007&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=d02d1b28456dfbef669d57692ac28244. Retrieved 12 August 2007.
- ^ Mazur, Lynnette J.; Janice Kim. "Spectrum of Noninfectious Health Effects From Molds <internet>". American Academy of Pediatrics. http://pediatrics.aappublications.org/cgi/content/full/118/6/e1909. Retrieved 12 August 2007.
- ^ Froquet, R. et al.. "Trichothecene toxicity on human megakaryocyte progenitors (CFU-MK) <internet>". SAGE Publications. http://het.sagepub.com/cgi/content/abstract/20/2/84. Retrieved 12 August 2007.
- ^ Joffe, A. Z.; B. Yagen. "Comparative study of the yield of T-2 toxic produced by Fusarium poae, F. sporotrichioides and F. sporotrichioides var. tricinctum strains from different sources <internet>". SAGE Publications. http://het.sagepub.com/cgi/content/abstract/20/2/84. Retrieved 12 August 2007.
- ^ Hay, Rod J.; B. Yagen. "Fusarium infections of the skin <internet>". http://www.co-infectiousdiseases.com/pt/re/coinfdis/abstract.00001432-200704000-00002.htm;jsessionid=G2JGL27MSRdb4TS82LyckCgxLH2zJLX3ynBfjz5kjMyfh4WpVkLg!1152499061!181195629!8091!-1. Retrieved 12 August 2007.
- ^ Food and Drug Administration. "Guidance for Industry and FDA - Letter to State Agricultural Directors, State Feed Control Officials, and Food, Feed, and Grain Trade Organizations <internet>". http://www.cfsan.fda.gov/~dms/graingui.html. Retrieved 13 August 2007.
- ^ Hohn, Thomas M.. "Trichothecene-resistant transgenic plants <internet>". http://www.patentstorm.us/patents/6646184.html. Retrieved 13 August 2007.
- ^ Dubois, Eric et al.. "Intra-laboratory validation of a concentration method adapted for the enumeration of infectious F-specific RNA coliphage, enterovirus, and hepatitis A virus from inoculated leaves of salad vegetables spt on from mexican migrant workers. <internet>". http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T7K-4HYMVXK-4&_user=10&_coverDate=04%2F25%2F2006&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=29d010eafc89179a9a66fd24a4b44e21. Retrieved 11 August 2007.
- ^ Schmidt, Heather Martin. "Improving the microbilological quality and safety of fresh-cut tomatoes by low dose dlectron beam irradiation - Master thesis <internet>" (PDF). http://txspace.tamu.edu/bitstream/1969.1/2767/1/etd-tamu-2004B-FSTC-Schmidt.pdf. Retrieved 11 August 2007.
- ^ "Food-Related Diseases". http://www.cdc.gov/ncidod/diseases/food/index.htm.
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- ^ David F. Smith, H. Lesley Diack, and T. Hugh Pennington: Food Poisoning, Policy and Politics : Corned Beef and Typhoid in Britain in the 1960s, Boydell Press, July 15, 2005, ISBN 1843831384
- ^ Emerging Infectious Diseases. 5. 1999. http://www.cdc.gov/ncidod/eid/vol5no5/mead.htm. Retrieved 2010-07-26.
- ^ Eric Schlosser (July 25, 2010). "Unsafe at Any Meal". New York Times. http://www.nytimes.com/2010/07/25/opinion/25schlosser.html. Retrieved 2010-07-26. "Every day, about 200,000 Americans are sickened by contaminated food. Every year, about 325,000 are hospitalized by a food-borne illness."
- ^ .
- ^ Healthy People 2010 Home Page
- ^ "Preliminary FoodNet Data on the Incidence of Infection with Pathogens Transmitted Commonly Through Food". CDC Morbidity and Mortality Weekly Report. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5714a2.htm. Retrieved 2008-04-15.
Further reading
Periodicals
- International Journal of Food Microbiology, ISSN: 0168-1605, Elsevier
- Foodborne Pathogens and Disease, ISSN: 1535-3141, Mary Ann Liebert, Inc.
- Mycopathologia, ISSN: 1573-0832 (electronic) 0301-486X (paper), Springer
Books
- Advances in Food Mycology (Advances in Experimental Medicine and Biology) (2006) by A.D. Hocking et al., ISBN 978-0387283913 (electronic) 978-0387283852 (paper), Springer
- Foodborne Infections and Intoxications (2006) by Hans P. Riemann and Dean O. Cliver, ISBN 012588365X, Elsevier
- Foodborne Pathogens: Microbiology And Molecular Biology (2005) by Pina M. Fratamico et al., ISBN 190445500X ISBN 978-1904455004, Caister Academic Press
External links
- Top 10 Food Poisoning Risks, New York Times. October 6, 2009.
- Surveillance for Foodborne-Disease Outbreaks --- United States, 1998--2002
- Foodborne diseases, emerging, WHO, Fact sheet N°124, revised January 2002
- Foodborne illness information pages, NSW Food Authority
- Food safety and foodborne illness, WHO, Fact sheet N°237, revised January 2002
- UK Health protection Agency
- US PulseNet
- Food poisoning from NHS Direct Online
- Food Safety Network hosted at the University of Guelph, Canada.
- Food and Water Borne Diseases at the Open Directory Project
- Food Standard Agency website
- Australian OzFoodnet Foodborne Diseases Surveillance Network
This article incorporates public domain material from websites or documents of the Centers for Disease Control and Prevention.
Categories: Food safety | Foodborne illnesses | Infectious diseases | Nutrition | Microbiology
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Sat, 12 Jun 2010 01:36:22 GMT+00:00
wcbd it's the season for picnics, cookouts, and other outdoor parties. But eating outdoors in warm weather presents a food safety ...
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MolBreed8p75 Table3 gif 02 Feb 2006 12 23 19k lysine biosynth gif 02 Feb 2006 12 38 10k freq foodborne illne > 02 Feb 2006 15 26 14k
Terry S. Singeltary Sr.
Wed, 30 Dec 2009 00:02:00 GM
Anyone with signs or symptoms of . foodborne illness. should consult a physician. The following products are subject to recall: Trader Joe's 1-pound packages of trader joe'S butcher shop fine quality meats ground beef 85/15. ...
Q. Not that this surprised me in the least, but...
Asked by halfshaft - Fri Jul 25 16:37:06 2008 - - 11 Answers - 0 Comments
A. Ah yes, now go back a few years earlier and get to the root of the problem. Mexico does not have the government restrictions and quality assurance that the US does in growing produce. They actually are allowed to use human feces as fertilizer. The salmonella bacteria exists beneignly in human feces. Remember NAFTA and Clinton? Here is a link to the results that NAFTA has had on the amount of produce imported since it's inception. The reality is once again, Bush is having issues cleaning up the mess Clinton made. So, when you sit down and bite into those Mexican grown peppers and tomatoes, just remember it was Clinton who told you to " Eat Sh*t and Die"!
Answered by booman17 - Fri Jul 25 16:59:29 2008


