Atmospheric, geological, and hydrological changes are the main causes of natural disasters. In recent decades natural disasters have increased, causing loss of life, physical damages, and economic loss. Developing countries are most affected by the disasters because they don’t have the required resources, infrastructure, and disaster preparedness system. Although the deaths after a disaster are mainly caused by the initial traumatic impact of the disaster, outbreak of infectious disease in the aftermath of the disaster is the result of population displacement and change in environment. Disaster preparedness plans should be designed in such way to consider the health needs of…