Foodborne Illness

pathology

Oct 8, 2023 - 02:36
 0  16

foodborne illness, also called foodborne disease, any sickness that is caused by the consumption of foods or beverages that are contaminated with certain infectious or noninfectious agents. Most cases of foodborne illness are caused by agents such as bacteria, viruses, or parasites. Other agents include mycotoxins (fungal toxins), marine biotoxins, and the toxins occurring in poisonous mushrooms; metals such as lead, mercury, and cadmium, which may contaminate food through air, water, or soil pollution; organic pollutants, such as dioxin and polychlorinated biphenyls (PCBs), which are by-products of some industrial processes; and prions (abnormal forms of normally harmless proteins). The agents of foodborne illnesses cause a variety of conditions, ranging from gastroenteritis to reproductive or developmental disorders and neurodegenerative diseases, such as bovine spongiform encephalopathy (mad cow disease). People sometimes refer to foodborne illnesses, particularly those involving gastroenteritis, as food poisoning. Food poisoning, however, is a type of foodborne illness and specifically is caused by toxins present in foods; typically, those toxins are produced by bacteria and cause symptoms soon after the contaminated food is consumed. By contrast, certain other types of foodborne illnesses arise from ingestion of the infectious organisms or chemicals themselves and may take days to develop.

Although the incidence of foodborne illness is difficult to estimate, since many cases go unreported, the burden of illness is thought to be high. For example, tens of millions of people worldwide are affected annually by diarrheal diseases, a common proxy measure for foodborne illness. Foodborne illnesses often occur as outbreaks that have the potential to affect large numbers of people. For instance, in 1988 in China an outbreak of hepatitis A, caused by the consumption of contaminated clams, affected more than 300,000 people, and an outbreak of salmonellosis in the United States in 1994, caused by the consumption of contaminated ice cream, affected 224,000 people. Foodborne illnesses can be deadly. In 1985, for example, a listeriosis outbreak in California, involving a contaminated cheese product, caused 48 deaths out of 142 cases.

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