Several types of models are used to describe disease dynamics, including:
SIR Model: Divides the population into Susceptible (S), Infected (I), and Recovered (R) compartments. SEIR Model: Adds an Exposed (E) compartment to account for the incubation period before individuals become infectious. SIS Model: Individuals move from Susceptible (S) to Infected (I) and back to Susceptible (S) without gaining permanent immunity.