Question

Transmission of infectious agents within a healthcare setting requires a certain sequencing of elements that allows infection to occur. identify the correct sequence.

Answer 1

The correct sequence for transmission of infectious agents within a healthcare setting is: presence of pathogen, reservoir, exit from the reservoir, transmission, entry into a susceptible individual, and establishment and infection.

Step-by-step explanation:

The correct sequence for transmission of infectious agents within a healthcare setting is as follows:

1. Pathogen must be present: There must be a disease-causing microorganism (pathogen) present in the healthcare setting.
2. Reservoir: The pathogen must have a reservoir, which is a source where it can easily survive and multiply, such as contaminated surfaces or equipment.
3. Exit from the reservoir: The pathogen must leave the reservoir and establish itself on a surface or object, becoming capable of spreading to others.
4. Transmission: The pathogen must be transmitted from the contaminated source to a susceptible individual through direct or indirect contact.
5. Entry into a susceptible individual: The pathogen must enter a susceptible individual through a portal of entry, such as inhalation, ingestion, or contact with mucous membranes.
6. Establishment and infection: Once inside the susceptible individual, the pathogen must establish itself and cause infection.

Answer 2

Transmission of infectious agents within a healthcare setting requires three basic elements which are collectively called chain of infection; they are: infectious element, susceptible host and  method of transmission for the agent. The chain of infection is the sequence of events which allow infection to be transmitted in an hospital setting. The chain of infection will continue indefinitely unless the chain is broken by infection control measures.