SIR Model (Susceptible-Infectious-Recovered Model)

The SIR Model is a way to understand how diseases spread through a population. It divides people into three groups: Susceptible (those who can catch the disease), Infectious (those who have the disease and can spread it), and Recovered (those who have recovered and gained immunity). The model shows how individuals move from susceptible to infectious, and then to recovered over time. It helps predict how quickly a disease spreads and how many people it might affect, assisting in planning public health responses.