In S-I-R models, if the ratio of new infections to recoveries is less than 1,

Question

Quizplus · Accepted Answer

If the ratio of new infections to recoveries is less than 1, it means that each infected individual is infecting fewer than one other individual. This leads to a decline in the number of infected individuals over time, eventually resulting in the infection fizzling out and failing to take hold in the host population. This is known as herd immunity, where a high proportion of the population becomes resistant to the infection, making it difficult for the infection to spread. Therefore, option C is the correct answer.

In S-I-R Models, If the Ratio of New Infections to Recoveries