Hysteresis
Hysteresis loops are central to the paper's interpretation of abrupt shifts from low-incidence to high-incidence cycles. As beta0 or R0 increases, the solution can jump to a much higher-incidence cycle after a fold is passed. Coexisting st…
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Hysteresis loops are central to the paper's interpretation of abrupt shifts from low-incidence to high-incidence cycles. As beta0 or R0 increases, the solution can jump to a much higher-incidence cycle after a fold is passed. Coexisting stable cycles imply that perturbations can move the system to a high-incidence cycle without gradual warning in the control parameter.