Natural Disasters and - University of South...
Transcript of Natural Disasters and - University of South...
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Foundations of Global Health
Natural Disasters and Humanitarian Issues
There are two big forces at work, external
and internal. We have very little control over
external forces such as tornadoes,
earthquakes, floods, disasters, illness and
pain. What really matters is the internal
force. How do I respond to those disasters?
~Leo Buscaglia
*"It was chaos. There was nobody
there, nobody in charge. And there
was nobody giving even water. The
children . . . they're all just in tears.
There are sick people. We saw . . .
people who are dying in front of
you." -- CNN producer Kim Segal,
describing conditions in the New
Orleans Convention Center, Sept.
1.
The situation on the ground remains
dire and people should be under no
illusions that the crisis is over.
~President Barack Obama on Haiti
Earthquake
Get off your ass and get down here to fix
the goddamn biggest disaster in the nation's
history. ~New Orleans mayor Ray Nagin
requests faster US federal government
assistance following Hurricane Katrina
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Learning Objectives
• Understand the difference between Natural Disasters and Complex Emergencies
• Be familiar with the Key Terms
• Understand some of the health issues that arise from disasters
• Be familiar with some critical aspects of humanitarian aid
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Goals of Humanitarian Response
1. prevent and reduce excess morbidity and mortality
2. promote a return to normalcy
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Importance of Complex Emergencies and Natural Disasters
• Increase
– Death
– Illness
– Disability
– Economic Costs
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Key Terms
• Disaster
– “an occurrence, either natural or man made, that causes human suffering and creates human needs that victims can not alleviate without assistance”
See page 248 in text
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Key Terms
• Complex Emergency (CE)
– “ situations affecting large civilian populations which usually involve a combination of factors, including war or civil strife, food shortages, and population displacement, resulting in significant excess mortality” pg. 248
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Key Terms
• Refugees
– A person who is outside their country of nationality
– well-founded fear of persecution because of their race, gender, religion, nationality, or membership to a particular social or political group
– unable or unwilling to seek the protection or return to their country for fear of persecution.
– Subgroup of Displaced Persons
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Key Terms
• Internally Displaced People (IDP)
– People who flee or are forced to migrate during a disaster or complex humanitarian emergency leave their homes, but stay in the country.
– Local government is responsible for them
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Key Terms
• Crude Mortality Rate
– The proportion of people who die from a population at risk over a period of time.
– Unusually expressed per 10,000 population per day
• Example: a mortality rate of 9.5 in a population of 10,000 would mean 95 deaths per year in that entire population.
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Key Terms
• Attack Rate
– the proportion of the exposed population at risk who become infected or develop clinical illness during a defined period of time.
– Total number of cases/population at risk
– Usually expressed as a percentage
• Example: 30 people out of 100 were positive for cholera. The attack rate in this population is 30%
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Natural Disasters
• Types
– Droughts
– Hurricanes
– Typhoons
– Cyclones
– Tsunamis
– Earthquakes
– Volcanoes
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Natural Disasters
• 90% of deaths occur in low and middle income countries
• Greater impact on poor people
• Poor at greater risk
– Subpar housing
– Can’t afford to live somewhere else
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Natural Disasters
• Infrastructure damage
– Water supply
– Sewage system
– Roads/Transportation
– Hospitals
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Health Burden of Natural Disasters
• Limited Data
• Earthquakes
– High injuries in short time span
– Increased risk for orthopedic disabilities
– Mental health problems (PTSD)
– Homelessness
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Health Burden of Natural Disasters
• Related to Disaster Type• Tsunamis
– Most deaths are from drowning
– Increase diarrheal disease, respiratory infection, skin disease
• Volcanoes
– 90% of deaths are due to mud, ash, and floods.
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Complex Emergencies (CE)
• History
– 1975-1985: there were 5 CE’s
– End of 1990’s: 40 CE’s per year
– 2001: more then 14 million refugees and 20 million IDP’s in the world
– CE’s in the last decade have had greater health impacts then natural disasters
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CE Features
• Long lasting
• Food Shortages
• Loss of Health Facilities
• Damage water supply
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Health Burden of CE
• Limited Data
• 320,000 – 420,000 deaths per year
• Rwanda (1994)
– 500,000 – 1 million deaths from genocide related trauma
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Health Burden of CE
• Infrastructure Damage
– 1.7 million more people died in Democratic Republic of Congo
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Health Burden of CE
• Women and Children
– Children die 2-3 times more in the beginning of CE
– 50% of deaths in the Democratic Republic of Congo
– UNICEF estimates 1.5 million children killed since 1980
– 25% of women in Azerbaijani reported sexual violence against them during 3 months of civil fighting in 2000.
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Causes of Death in CE
• IDP/Refugee camps
– #1 cause of death is diarrheal diseases
• Example: Cholera can have a 3-30% mortality rate in refugee camps
– Respiratory infections
• Poor housing
• Overcrowding
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Causes of Death in CE
– Measles• Risk of death increased by malnutrition and
lack of vaccination
• 30% mortality rate
– Malaria• Highest risk in Sub-Saharan Africa
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Causes of Death in CE• Nutrition• Malnourished at higher
risk for disease• Food scarcity• Micronutrient
deficiencies– Niacin
• Can cause diarrhea
– Vitamin A• Measles depletes vitamin A
stores
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Addressing Health Issues during a Natural Disaster
• Assess needs immediately after the disaster (Situational Analysis)
• Take care of immediate trauma first
• Establish disease surveillance
• Provide food, water, and shelter
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Assisting those without Resources
• Need cooperative relationship among partners
• Use evidence-based methods
• Involve affected communities
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Key Players in Humanitarian Aid
• Community Health Workers
– Intermediaries between community and humanitarian agencies
– Collect demographic data
– Provide first aid
– Assist in mass vaccination campaigns
– Identify sick and malnourished
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Key Players in Humanitarian Aid
• International Agencies
– Red Cross / Red Crescent
– USAID
– OXFAM
– WHO
– UN
– Doctors without Borders
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Protection for Humanitarian Workers
• Geneva Convention 1949
– Considered non-combatants
– Rights include:
• Humane treatment
• Access to food, water, shelter, medical treatment, communications
• Free from violence to life and person
• Hostage taking
• Degrading treatment
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Humanitarian Workers
• Issues
– Geneva doesn’t guarantee access to affected area
– Doesn’t provide armed escort
– In 2008, 90% of deaths were from malicious violence
– One third of deaths usually occur in the first 3 months of deployment
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Disaster Preparedness Plan
• Identify vulnerabilities
• Develop scenarios
• Outline the roles of participating agencies
• Train and practice
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Katrina - 2005
• Had disaster preparedness plan
– Didn’t follow it
• Participating agencies knew their role
– Local government officials:
• in charge of evacuation (19 hrs before landfall)
• Provide enough supplies for 3 days
– Federal Emergency Management Agency (FEMA):
• Resupply (took 5 days)
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Haiti
• Dominican Republic was first to send aid
• With 24 hours Iceland sent a team and supplies
• Multinational aid effort
– China, Qatar, Israel, U.S., etc
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Addressing Health Issues in CE
• Hard to predict when they’ll happen
– Civil conflict
• Primary prevention = stopping the violence
• Secondary prevention
– Supply neighboring countries with adequate resources
– Provide a safe environment where the health needs can be met (camps)
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Critical Aspects of CE Aid
• Assessment and Surveillance
– Conduct a situational analysis
• Demographics, health, etc
– Develop disease surveillance system
• Keep death rate under 1/10,000 per day
• Keep it Simple– Example: check the weight/height ratio in children under 5 for
signs of malnourishment
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Critical Aspects of CE Aid
• Safe and Healthy Environment
– Personal Hygiene
– Safe Water Source
• No more than 500 meters away
– Sanitation
• 1 toilet per 20 people
• No more than 50 meters from dwellings
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Critical Aspects of CE Aid
• Safe and Healthy Environment
– Shelter
• 3.5 square meters of covered area per person
• Focus on the safety of women
– Education
• How to wash your hands
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Critical Aspects of CE Aid
• Food
– Rations distributed by family unit
– Vitamin A supplements for children
– One of the most critical determinants of health outcomes
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Critical Aspects of CE Aid
• Disease Control
– Prevent epidemics
• Vaccinate children from 6 mths-15yrs (measles)
• Management of diarrhea
• Treatment for malaria
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Goma Zaire – Cholera Outbreak
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Cholera Facts
• 25-50% of typical cases are fatal if untreated
• Transmission through fecally contaminated food and water
• Symptoms include watery diarrhea, dehydration and vomiting
• 1% acceptable death rate
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Goma Cholera Epidemic
• Death rate was between 19.5-31.2%
• 85-90% of all reported deaths were due to diarrheal disease
• Estimated 10,000-20,000 deaths
• Epidemic lasted about 1 month
Cholera outbreaks result from drinking or eating food contaminated with Vibrio cholerae bacteria (shown in image).
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Future Challenges
• Reducing the impact on health
• Develop common standards
• Emphasize cost-effective methods
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In Summary
• Natural disasters and CE’s had a large impact on the health of a population
• After the initial disaster takes place there is a lot of aftermath that negatively impacts health
• Health impact can be reduced through proper planning
• Focus on reducing deaths, disability, and morbidity