Which bacteria cause poisoning and disease?

Several bacteria can cause poisoning and disease, with notable examples including Salmonella, which is commonly associated with foodborne illness from undercooked poultry and eggs; Escherichia coli (E. coli), particularly the O157:H7 strain, linked to contaminated food and water; and Listeria monocytogenes, which can cause severe illness from contaminated deli meats and dairy products. Clostridium botulinum is notorious for producing a potent toxin in improperly canned foods, leading to botulism. These bacteria can lead to various symptoms ranging from gastrointestinal distress to severe systemic illness.