The common cold is a viral infectious disease that infects the upper respiratory system. It is also known as acute viral rhinopharyngitis, or acute coryza. Being the most common infectious disease in humans, the cold is mainly caused by coronaviruses or rhinoviruses.
If you have bacterial gastroenteritis, bacteria have caused an infection in your gut. This usually results in your stomach and intestines becoming inflamed, and youâll probably experience unpleasant symptoms such as vomiting, severe abdominal cramps and diarrhea.umerous kinds of bacteria can cause gastroenteritis, including: 1  yersinia (found in pork). 2  staphylococcus (found in dairy products, meat, and eggs). 3  shigella (associated with water and found in swimming pools). 4  salmonella (found in meat, dairy products, and eggs).
The stomach flu is often referred to as a stomach bug.. This is actually a misnomer that causes considerable confusion. The stomach flu is caused by a communicable virus that is passed amongst infected individuals. It is not caused by bacteria. The stomach flu virus attacks the intestines and causes severe symptoms that may last anywhere between 24 hours and several days. Food poisoning, on the other hand, is not caused by human contact, but by consuming contaminated food.