Which bacteria can be prevented through practicing personal hygiene?

Shigella spp. is a type of bacteria that is closely associated with poor personal hygiene practices, particularly the lack of proper handwashing after using the restroom. This bacterium is known to cause foodborne illness, leading to severe diarrhea and other gastrointestinal issues. By promoting good personal hygiene, such as frequent and effective handwashing with soap and water, especially after using the toilet or handling raw food, the transmission of Shigella can be significantly minimized.

In contrast, the other bacteria listed, such as Clostridium botulinum, Vibrio vulnificus, and Bacillus cereus, are more often associated with specific food handling practices, environmental conditions, and food storage rather than personal hygiene alone. While good hygiene is always important in food safety, the connection between Shigella and personal hygiene is particularly strong, making it the correct answer in this context.