Clostridium botulinum can be caused by:

• A. Home or commercial canned foods that are not processed correctly
• B. Undercooked eggs
• C. Spoiled dairy
• D. Raw seafood

Answer: (A)

Botulism toxin from Clostridium botulinum forms in environments that are sealed, low-acid, and oxygen-free. When foods are processed and canned improperly, spores can survive and then grow in these anaerobic conditions, producing a highly potent toxin. That makes improperly processed home or commercial canned foods the classic source of foodborne botulism.

Other scenarios aren’t typical sources of botulism. Undercooked eggs are more commonly linked to Salmonella or other bacteria, spoiled dairy to spoilage organisms and various toxins, and raw seafood to pathogens like Vibrio or norovirus. So, the canned foods that aren’t processed correctly best fit the source of botulism.