Which term describes the chain of events required for infection to take place?

Which term describes the chain of events required for infection to take place?

• A. Chain of Infection
• B. Direct Contact
• C. Blood-Borne Pathogens
• D. Contaminated Waste

Answer: (A)

The chain of infection describes the sequence of events that must occur for an infection to take place. It includes the infectious agent, a reservoir where the agent lives, a way for the agent to exit that reservoir, a mode of transmission, a portal of entry to the new host, and a susceptible person who can become infected. This term is the best fit because it names the entire process, not just one piece of it. Direct contact is a way infection can spread, but it describes a method, not the whole sequence. Blood-borne pathogens refers to a category of germs that can be transmitted via blood, not the chain itself. Contaminated waste points to a risk source, not the process of infection. Remember, infection happens only if all links are present; breaking any one link stops transmission.

The chain of infection describes the sequence of events that must occur for an infection to take place. It includes the infectious agent, a reservoir where the agent lives, a way for the agent to exit that reservoir, a mode of transmission, a portal of entry to the new host, and a susceptible person who can become infected. This term is the best fit because it names the entire process, not just one piece of it. Direct contact is a way infection can spread, but it describes a method, not the whole sequence. Blood-borne pathogens refers to a category of germs that can be transmitted via blood, not the chain itself. Contaminated waste points to a risk source, not the process of infection. Remember, infection happens only if all links are present; breaking any one link stops transmission.