Question

select the correct answer.

what is the second link in the chain of transmission?

infectious agent
portal of entry
portal of exit
reservoirs

Explanation:

Define the chain of transmission

The chain of transmission (also known as the chain of infection) is a model used to understand how infectious diseases spread. It consists of six sequential links that must all be connected for an infection to occur.

Identify the six links in order

The six links in the chain of infection are:

1. Infectious agent (the pathogen, such as bacteria or virus)
2. Reservoir (the place where the pathogen lives and grows, such as humans, animals, or soil)
3. Portal of exit (the way the pathogen leaves the reservoir)
4. Mode of transmission (how the pathogen travels to another host)
5. Portal of entry (the way the pathogen enters the new host)
6. Susceptible host (the person vulnerable to infection)

Determine the second link

Based on the established sequence, the first link is the infectious agent, and the second link is the reservoir. Therefore, "reservoirs" is the correct answer.

Answer:

• Infectious agent
• portal of entry
• portal of exit
• reservoirs (Correct answer)