Signs include diarrhea, nausea, vomiting and stomach cramps. Clostridium perfringens C. Perfringens grows in undercooked meat and poultry and in foods left out for too long. Signs include diarrhea, cramps and headache. Botulism Botulism is the most dangerous food poisoning. It is also rare.
Botulism is most often is found in canned foods, especially home canned.
Signs of poisoning begin 12-36 hours after eating and include double vision, dry sore throat, weakness, problems swallowing and breathing. If you think you have botulism, go to a hospital right away.