Final answer:
Bacillus cereus gastroenteritis is a foodborne illness caused by Bacillus cereus and characterized by symptoms such as nausea, pain, abdominal cramps, and diarrhea.
Step-by-step explanation:
Bacillus cereus gastroenteritis is a type of foodborne illness caused by the gram-positive bacterium Bacillus cereus. It is characterized by symptoms such as nausea, pain, abdominal cramps, and diarrhea. B. cereus produces diarrheal toxins that cause the diarrhea in affected individuals. This type of gastroenteritis is often associated with the consumption of contaminated rice and other prepared foods left at room temperature for too long.