Which of the following is NOT a normal portal of exit for an infectious disease?

• A. Feces
• B. Urine
• C. Pancreas
• D. Blood

Answer: (C)

Verified step by step guidance

1. Understand the concept of 'portal of exit' in infectious diseases: it refers to the route through which a pathogen leaves the host to spread to others.
2. Identify common normal portals of exit, which typically include feces, urine, blood, respiratory secretions, and other bodily fluids.
3. Review each option given: feces, urine, blood are all common portals of exit because pathogens can be shed through these routes.
4. Recognize that the pancreas is an internal organ and not a route through which pathogens exit the body; it is not a portal of exit.
5. Conclude that the pancreas is NOT a normal portal of exit for infectious diseases, unlike the other options listed.