Which of the following is considered a portal of exit?

• A. Handwashing
• B. Mouth, anus, wound
• C. Skin integrity
• D. Clean surfaces

Answer: (B)

The portal of exit refers to a pathway through which pathogens leave the host, enabling the potential spread of infection. The mouth, anus, and wounds are all sites where pathogens can exit the body. For example, respiratory infections can exit through the mouth during coughing or sneezing, while gastrointestinal pathogens can exit through the anus. Additionally, any open wound can become a site for pathogen exit, further contributing to the potential for transmission to other individuals.

In contrast, handwashing, skin integrity, and clean surfaces do not serve as portals of exit. Handwashing is a method to reduce the spread of pathogens, skin integrity protects against infection, and clean surfaces help to minimize environmental contamination. These options are more focused on infection control rather than providing pathways for pathogens to leave the body. Understanding the role of portals of exit is crucial for implementing effective infection prevention measures in healthcare settings.