1 The incidence decay (ID) estimator assumes an exponential model and finds the parameters by minimizing the sum of the
2 squared differences between the observed cases counts and the case counts expected based on the assumed model.
3 The method assumes that the serial interval is known. This means that the user needs to input the value of the serial
4 interval. The serial interval is the average time between the first infection and the time the first infected individual
5 exhibits disease symptoms.