Not all transmissible animal diseases can or should be prevented and controlled through regulatory measures, for example if the disease is too widespread, if diagnostic tools are not available, or if the private sector can take measures to control the disease by itself.
Ní féidir ná níor cheart gach galar in-tarchurtha ainmhithe a chosc nó a rialú trí bhearta rialúcháin, mar shampla, má tá an galar rófhorleathan, mura bhfuil uirlisí diagnóiseacha ar fáil, nó más féidir leis an earnáil phríobháideach, leis féin, bearta a dhéanamh chun an galar a rialú.