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.
Parasitic causes of diarrhea: Introduction. Parasitic causes of diarrhea: Parasitic causes of diarrhea caused by a parasite infection. See detailed information below for a list of 7 causes of Parasitic causes of diarrhea, Symptom Checker, including diseases and drug side effect causes.Â» Review Causes of Parasitic causes of diarrhea: Causes | Symptom Checker Â».arasitic causes of diarrhea: Comorbid Symptoms. Some of the comorbid or associated medical symptoms for Parasitic causes of diarrhea may include these symptoms: 1  Abdominal pain. 2  Abdominal symptoms. 3  Bowel movements.