Which component of the chain of infection is the route through which a microorganism leaves an infected person?
Correct answer: B. Portal of exit
- A. Portal of entry
- B. Portal of exit
- C. Mode of transmission
- D. Susceptible host
Explanation
The portal of exit is the route by which an organism leaves its reservoir, such as the respiratory tract, blood, stool or wound drainage. The portal of entry is where the organism enters another host, so it is a different link in the chain.
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About Communicable Diseases
Communicable diseases are studied through the chain of infection, including the agent, reservoir, mode of transmission, portal of entry and susceptible host. Coverage includes isolation, disinfection, immunization, surveillance and outbreak control, with attention to diseases such as tuberculosis, malaria, hepatitis, polio and diarrheal infections.
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