Final answer:
The term "infectious agent - host" refers to the pathogen and the affected individual in the context of infectious diseases.
Step-by-step explanation:
The term "infectious agent - host" refers to the pathogen and the affected individual in the context of infectious diseases. In any infectious disease, there is an infectious agent or pathogen that causes the disease, and a host organism that is affected by the disease. The pathogen can be a virus, bacteria, fungi, parasites, or other microorganisms that invade and multiply within the host organism, leading to the development of the disease.
Learn more about Infectious diseases