Illness caused by bacteria which do not produce toxin. Sometimes fatigue is only symptom. Salmonella enteritidis in raw shell eggs. Most outbreaks result from food, especially salads, prepared and handled by workers using poor personal hygiene. Diarrhea containing blood and mucus, fever, abdominal cramps, chills, and vomiting occur 12 to 50 hours from ingestion of bacteria and can last a few days to 2 weeks.
Bacteria multiply rapidly at room temperature to produce a toxin that causes illness.