![]() ![]() Shellfish eaten during those months are potentially dangerous. This is more likely to occur in North America between June and October. Shellfish: Clams, mussels, oysters, and scallops can cause poisoning when they ingest certain poisonous dinoflagellates that produce the toxin saxitoxin. Fish containing toxic levels of histamine often taste unusually bitter or spicy. This poison attacks the nervous system.Īnother kind of fish poison, called scombroid poison, is a concentrated histamine. It's called ciguatera poison, and it's produced by a tiny sea parasite called a dinoflagellate. A poison similar to that naturally found in the puffer fish can also occur in many edible Caribbean and Pacific species. These poisons attack the central nervous system, causing partial or complete paralysis in severe cases.įish: Some fish, like the puffer fish, are naturally poisonous. Mushrooms and toadstools: Dozens of species can cause muscarine poisoning. Parasites: Parasites such a giardia lamblia can also cause food poisoning through contaminated produce and water. Viruses: Norovirus and other viruses can cause food poisoning, most commonly through contaminated raw or uncooked produce and shellfish from contaminated water. Many bacterial causes of food poisoning can be found in undercooked meats, poultry, eggs, dairy, processed meats, fish, custards, cream pies, and contaminated water. coli, Shigella, Staphylococcus, Campylobacter, and Clostridium perfringens. Some of the most common include Salmonella, E. Other less common causes include shellfish and insecticides.īacteria and bacterial toxins: Many bacteria can cause food poisoning, either directly or by the toxins they produce. ![]() However, in some less common types of food poisoning, the poison or toxin is naturally part of the food (e.g., poisonous mushrooms or fish). In most cases, bacteria, viruses, or parasites are transferred to food from other sources, making these organisms the most common causes of food poisoning. Contamination can occur anywhere along the process of obtaining and eating food – it can occur during growing, harvesting, processing, storing, or preparation stages. ![]() Food poisoning occurs when contaminated food or water is ingested. ![]()
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