<prompt> In disaster management all are true except-Mitigation before a disaster strikesResponse in pre-disaster phaseYellow color is for medium priorityGastroenteritis is commonest infection after disaster  <response>: Disaster managementManagement sequence of a sudden-onset disaster is as follows:-a Risk reduction phase before a disaster strikesIt includes:-Mitigation: Measures designed either to prevent hazards from causing emergency or to lessen the likely effect of emergencies.Preparedness: To ensure that appropriate systems, procedures and resources are in place to provide prompt effective assistance to disaster victims.b Disaster ImpactMost injuries are sustained during the impact, and thus greatest need for emergency care occurs in first few hours.The management can be divided intoSearch, rescue and first aid: Most immediate help comes from uninjured survivors.Field care: As many injured patients come simultaneously, emergency services should be proper in terms of priorty and numbers of facilities.Triage: Triage consists of classifying the injured on the basis of severity of injuries and the likely hood of their survival with prompt medical intervention.The most common triage classification system used internationally is four colour code systemi Red High priority treatment or transferii Yellow Medium priorityiii Green Ambulatory patientsiv Black Dead or moribund patients4. Tagging : All patients should be identified with tags.5. Identification of dead : Proper respect to dead is of great importance.c Recovery phase after disaster It includes :-Response : Response starts with disaster impact and extends in recovery phase.Rheabilitation and reconstruction : These should lead to restoration of pre-disaster conditionThe control room is nodal center in terms of disaster management.The diseases common after a disaster are: Gastroenteritis most common, acute respiratory infections pneumonia, leptospirosis, rabies, equine encephalitis and rickettsiosis. 