Translations:Advanced Field Epi:Manual 1 - Disease Investigation/84/en
The interval of time chosen for graphing the cases is important to the subsequent interpretation of the epidemic curve. The time interval should be selected on the basis of the incubation period of the disease and the period over which the cases are occurring. Choice of a time interval may also depend on the frequency with which animals are being examined in order to determine when any one animal first shows signs of disease.