What does the term susceptibility refer to in microbiology?

The term susceptibility in microbiology refers to a lack of resistance. This concept highlights an organism's vulnerability to infections or diseases caused by pathogens. When an organism is susceptible, it indicates that its immune system may not effectively combat invading microorganisms, making it more likely to become infected. Understanding susceptibility is crucial in various contexts, including identifying at-risk populations, understanding how infectious diseases spread, and devising effective treatment strategies. It underscores the importance of immunity and how certain factors, such as genetics, nutrition, and existing health conditions, can influence an organism's susceptibility to infections.