Drugs versus Biologics. 1  A biologic is manufactured in a living system such as a microorganism, or plant or animal cells. 2  Most biologics are very large, complex molecules or mixtures of molecules.enerics Drugs versus Follow-On Biologics. 1  To be approved as a generic, a drug must have the same active ingredient, strength, dosage form, and route of administration as the reference drug, and it must also be bioequivalent..
Viruses (e.g., adenovirus, astrovirus, rotavirus, Norwalk virus) are the most common cause of diarrhea in the United States. The most common ones in children are rotavirus and in adults are norovirus. Escherichia coli, Clostridium difficile, and Campylobacter, Salmonella, and Shigella spp. are common bacterial causes.
But if the liquids from the foods you eat aren't absorbed, the result is a watery bowel movement. A number of diseases and conditions can cause diarrhea. Common causes of diarrhea include: 1  Viruses. 2  Viruses that can cause diarrhea include Norwalk virus, cytomegalovirus and viral hepatitis.3  Rotavirus is a common cause of acute childhood diarrhea.ut if the liquids from the foods you eat aren't absorbed, the result is a watery bowel movement. A number of diseases and conditions can cause diarrhea. Common causes of diarrhea include: 1  Viruses. 2  Viruses that can cause diarrhea include Norwalk virus, cytomegalovirus and viral hepatitis.