What term is used to describe a person or animal that does not provide sufficient resistance to a particular infectious agent?

The term that describes a person or animal that does not provide sufficient resistance to a particular infectious agent is "Susceptible Host." A susceptible host is someone whose immune system is unable to effectively combat an infectious agent, leading to an increased risk of infection. This lack of resistance can be due to several factors including age, underlying health conditions, immunosuppression, or even certain medications that compromise the immune system.

Understanding the concept of a susceptible host is crucial in infection control as it helps healthcare professionals identify individuals who may be at higher risk for infection and implement preventative measures. In contrast, a carrier refers to an individual who harbors the infectious agent but may not show symptoms, while the terms infectious agent and pathogen denote the actual microorganisms that cause disease (such as bacteria, viruses, fungi, or parasites). Recognizing the difference between these terms is essential in addressing infection prevention and control effectively.