In S-I-R models, which of the following models the ratio of new infections to recoveries?

Question

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The S-I-R model, which stands for Susceptible-Infectious-Recovered, uses the ratio of new infections to recoveries to understand the spread of infectious diseases. The correct formula is S × (b ÷ g), where S represents the susceptible population, b is the transmission rate, and g is the recovery rate. This ratio helps in determining the basic reproduction number (R0), which indicates how many people one infected person will pass the disease on to, on average, in a population that is entirely susceptible.

In S-I-R Models, Which of the Following Models the Ratio