What characterizes a Susceptible Host?

A susceptible host is characterized by a diminished natural resistance to infection, which makes them more vulnerable to pathogens. This diminished resistance can be due to a variety of factors, including underlying health conditions, age, malnutrition, or certain medications that weaken the immune system. When a host's ability to fight off infections is compromised, they become more likely to develop illnesses upon exposure to infectious agents.

In contrast, a strong immune response, often found in healthy individuals, enhances the body's ability to fend off infections, rendering them less of a susceptible host. Individuals who regularly receive vaccinations generally maintain better immunity against specific diseases, further reducing their susceptibility. While exposure to multiple pathogens can increase the risk of infection, it does not necessarily define an individual's susceptibility on its own. Therefore, the defining characteristic of a susceptible host is indeed a patient whose natural resistance to infection is diminished.