Final answer:
The statement describes susceptible individuals in the S-I-R model, who are at risk of becoming infected based on transmission rates and contact with infected individuals.
Step-by-step explanation:
The statement 'These individuals can be infected depending on the rate of transmission and the probability of infection on contact' refers to the susceptible individuals within the S-I-R (Susceptible, Infected, Recovered) model. Susceptible individuals are those who have not yet contracted the disease but are at risk depending on how the disease spreads and whether they come into contact with infected individuals. In the context of infectious diseases and the S-I-R model, the rate of transmission and the probability of infection on contact play crucial roles in determining how many susceptible individuals will become infected over time. Factors like the strength of the immune system, the virulence of the pathogen, and the mechanics of disease transmission (e.g., through saliva, respiratory droplets, or direct contact with lesions) will influence this process.