see chapter on accounting rules for more detail on the selection of allocation keys to apportion expenditure the aim is to protect health and to reduce mortality and morbidity due to health hazards through in particular field epidemiology as well as training in technical standards this would involve eg the capacity to acquire or expand resources very quickly and preparations for changing the handling and referencing of patients such as patient triage and restructuring coverage in line with the nature of the emergency however in all cases health rules and a health infrastructure should be prepared to cope with emergency health care needs