2. Vibrio vulnificus
Credit: http://optinghealth.com
This form of highly virulent bacteria is found near the ocean in coastlines and other marine environments. It causes vomiting, diarrhea, and abdominal pain among healthy people and is more devastating for those with a compromised immune system. Fever and chills, decreased blood pressure (septic shock), and blistering skin lesions are only some of the effects on them.