The most common virus is the common cold, which is actually caused by several different families of viruses. Even though you may experience upper-respiratory symptoms associated with a bacterial infection, most cases of the common cold are not caused by bacteria-which make antibiotics useless against them.
Colon infection is caused when harmful bacteria resides in the colon. Normally, human immune system kills the harmful bacteria but there are some strains of bacteria that grow uninterruptedly even with strong immune system. When such bacteria overgrow in the large intestine, they can cause lot of complication.
Pancolitis or inflammatory disorder of the entire colon can be caused by several factors. Intestine Conditions : Any disease or disorder affecting the normal function of small intestine and large intestine can cause pancolitis. Intestine can be affected through infection and inflammation caused by variety of factors like viral or bacterial infection, birth defects and congenital disorders.