Bacillus cereus, an aerobic and spore-forming bacterium, is commonly found in soil, water, and various types of foods. It is known to cause food poisoning in humans, and its symptoms include vomiting, diarrhea, and abdominal pain.

Bacillus cereus can affect various types of food, including rice, pasta, meat, vegetables, and dairy products. It can grow rapidly at room temperature, thus making food stored at room temperature vulnerable to contamination.

To prevent Bacillus cereus contamination, it is advisable to store food at safe temperatures, practice proper food hygiene, and thoroughly cook all food. Avoid leaving cooked food at room temperature for extended periods, and ensure that all food is stored in airtight containers.

In conclusion, Bacillus cereus is a potentially harmful bacterium found in many types of food. By following proper food hygiene and storage practices, we can prevent the growth and spread of Bacillus cereus and other harmful bacteria, thus ensuring safe and healthy food consumption.