The American Red Cross defines disaster as “a threatening or occurring event of such destructive magnitude and force as to dislocate people, separate family members, damage or destroy homes, and injure or kill people. A disaster produces a range and level of immediate suffering and basic human needs that cannot be promptly or adequately addressed by the affected people, and impedes them from initiating and proceeding with their recovery efforts. Natural disasters include floods, tornadoes, hurricanes, typhoons, winter storms, tsunamis, hail storms, wildfires, windstorms, epidemics, and earthquakes. Human-caused disasters — whether intentional or unintentional — include residential fires, building collapses, transportation accidents, hazardous materials releases,
explosions, and domestic acts of terrorism.”

(Discussion on the difficulties of arriving at a consensus definition of disaster)


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Noji (1997) lists 5 phases of a disaster (also known as the Disaster Cycle):
  1. Nondisaster or Interdisaster phase
  2. Predisaster or Warning Phase
  3. Impact Phase
  4. Emergency Phase
  5. Reconstruction or Rehabilitation Phase
According to Noji, a phase may last from a few seconds to month or years, with one phase merging into the next.


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Examples of disaster-caused illnesses and injuries:
  • Earthquakes: crush injuries, lacerations, contusions, fractures, internal injuries such as pneumothorax, ruptured spleen, liver lacerations
  • Hurricanes: drownings (storm surge); clean up injuries, including lacerations; burns (from unattended flames); gastrointestinal illness, dermal conditions, animal bites and stings; potential for vector transmitted illnesses
  • Tornadoes: severe soft tissue injuries, such as contusions; complex lacerations; multiple fractures
  • Floods: drownings, especially with flash floods; clean-up injuries (Noji, 1997)
  • WMD/T: Will depend on event (e.g.: Problems stemming from the World Trade Center attack)

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Chronic health conditions

Conditions during and post-disaster may exacerbate chronic health problems, including cardiovascular disease; COPD, asthma and other respiratory illnesses; metabolic disorders, such as diabetes; and immune system disorders.


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Other CDE information organizations

American Academy of Pediatrics
Centers for Disease Control (bioterrorism page)
Federal Emergency Management Agency - Are You Ready?
Federal Emergency Management Agency - Resources for Parents and Teachers
National Association of School Psychologists


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Reputable sites include (but are not necessarily limited to):

American Academy of Pediatrics
American Red Cross
Centers for Disease Control and Prevention (Bioterrorism page for professionals)
Center for Mental Health Services
Center for Biosecurity of the University of Pittsburgh Medical Center (UPMC)
Journal of the American Medical Association (JAMA) bioterrorism articles
National Institute of Mental Health
National Library of Medicine - Medline Plus
U.S. Department of Health and Human Services


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