The emetic form of this disease occurs 1-6 hours after ingestion of toxins. It is caused by rice cooked for a time and temperature insufficient to kill any spores present. Even by reheating later, which then kills bacillus spores and vegetative cells, symptoms occur because one of the toxins produced, cereulide, is not inactivated at high temperatures.
The emetic form of this disease, caused by the toxin cereulide, has a short incubation period. Symptoms occur within 1-6 hours of toxin ingestion.
Symptoms of this form of Bacillus cereus food poisoning include nausea and vomiting shortly after toxin ingestion.
The diarrheal form of B. cereus food poisoning comes from a wide range of food, occurs 8-16 hours after ingestion of toxins, and is associated with diarrhea and GI pain. Symptoms occur from ingestion of enterotoxins, and this disease may be difficult to differentiate from C. perfringens food poisoning.
This form of disease has a longer incubation period, with symptoms occurring 8-16 hours after ingestion of the enterotoxins.
Patients with this form of B. cereus food-born illness complain of watery diarrhea, abdominal cramps and gastrointestinal pain, which may last for up to 24 hours.
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