avian influenza people and birds · 2020. 7. 15. · seasonal influenza. viruses ... trade, market...
TRANSCRIPT
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NIEHS CCCHST
Avian InfluenzaAvian Influenza
NIEHS Course OverviewProtecting Avian Influenza Responders Conference
17-19 Sept 2007
Bethesda, MD
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CCCHST NIEHS
Avian Influenza (AI)• What is avian influenza?
– Avian influenza, or bird flu, is a contagious viral disease caused by certain types of influenza viruses that occur naturally among birds
• Avian influenza viruses normally infect only birds; over 100 identified subtypes
• Migratory water birds, act as hosts for influenza viruses; do not get sick
– Avian influenza cases in Asia, Europe and Africa have prompted significant global concern because of the potential for a global pandemic outbreak
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CCCHST NIEHS
H5N1 Concern• First, the virus has been shown to mutate rapidly, and
has easily acquired new genes from other viruses through genetic re-assortment
• Second, the strain has been found to be highly pathogenic, and can spread very easily and quickly among bird populations
• Finally, the virus has a high rate of lethality among infected birds
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CCCHST NIEHS
Status of H5N1 Outbreaks• http://www.pandemicflu.gov/#map
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CCCHST NIEHS
Avoiding Exposure• Restrict regional travel in infected areas
• Avoid contact with live poultry
• PracticesPersonal hygiene
Social distancing
Responsibility
• Vaccine/Medications
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CCCHST NIEHS
Avian vs. Seasonal vs. Pandemic• There is a great deal of confusion
regarding various strains of influenza
• HPAI (H5N1) in poultry is NOT the same as seasonal influenza and is NOT the same as pandemic influenza
• Important to know differences and understand how each is transmitted and prevented
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CCCHST NIEHS
• Avian influenza A (H5N1)– Devastating global outbreak in poultry– Severe but rare human infections– Does not spread easily from person to person
• Seasonal influenza viruses– A public health problem every year– Circulates throughout the human population– Spreads easily from person to person
• Pandemic influenza virus– A new influenza subtype infecting humans – Causes serious illness– Spreads easily from person to person
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CCCHST NIEHS
Seasonal Flu• Every year in the United States:
– Average 5% to 20% of population contracts the flu
– More than 200,000 people are hospitalized from flu complications
– 36,000 to 45,000 people die from the flu annually
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CCCHST NIEHS
Mortality Curve of a Seasonal Flu
Very Young Young 20-40 Years Old Old Very Old
Incr
easi
ng M
orta
lity
(Rel
ativ
e)
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CCCHST NIEHS
Pandemic Influenza• An new influenza strain for
which people have little or no immunity
• Spreads easily from person to person with high morbidity and mortality rates
• The need for vaccine is likely to exceed availability– What is the public perception?
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CCCHST NIEHS
0900 hrs ID carrier
1000 hrs TV telecast & plea1100 hrs Fly to forest
1200 hrs Bait monkey
1400 hrs Catch monkey
1500 hrs Helicopter dogfight
1600 hrs Make antibodies 2000 hrs Save World
Too bad it rarely happens this way !!
Monkey escape
Chase monkey
Chase monkey
Chase monkey
Chase monkey
Catch monkey
Chase monkey
Eat takeout tacos
Hollywood Army Real Army
Courtesy: Dr Jerry Jaax, K- State
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CCCHST NIEHS
Cytokine Storm• It is believed that cytokine storms were responsible
for many of the deaths during the 1918 influenza pandemic, which killed a disproportionate number of young adults this phenomenon could repeat itself in future flu pandemics– In this case, a healthy immune system may have been a
liability rather than an asset. Preliminary research results from Hong Kong also indicated this as the probable reason of many deaths during the SARS epidemic in 2003. Human deaths from the bird flu H5N1 usually involve cytokine storms.
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CCCHST NIEHS
Major Flu Outbreaks of 20th
Century• 1918: “Spanish” flu pandemic killed 50 million
worldwide (2% of infected died)
• 1957-58: Flu spread from China killing 70K in the U.S.; 1-2 million worldwide
• 1968-69: “Hong Kong” flu affected millions worldwide and disrupted world economies
• 1997: First indication of avian “bird” flu in Hong Kong
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CCCHST NIEHS
Mortality Curve of a Pandemic Flu
Very Young Young 20-40 Years Old Old Very Old
Incr
easi
ng M
orta
lity
(Rel
ativ
e)
Relative Age Groups
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CCCHST NIEHS
Pandemic Flu• Emergence of pandemic flu could be
devastating to world health and economic stability– U.S. projection models predict that a pandemic
may cause over 500,000 deaths and 2 million hospitalizations
– 21st Century estimated economic impact (based upon
1968 flu epidemic) at $166.5 billion* due to death and lost productivity
*Excludes other disruptions to commerce and society
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CCCHST NIEHS
Examples of Economic Loss• Production losses
• Quarantine and euthanasia expenses
• Loss of animal populations and genetics
• Loss of international trade, market losses, or export barriers
• Income losses for producers, food processors, and exporters
• Movement restrictions for animals and people
• C & D costs for farms or processing and distribution facilities
• Higher prices of commodities
• Loss of consumer confidence in food supply
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CCCHST NIEHS
Government & Business Action• International Influenza Monitoring Agencies
► WHO ► GOARN Global Outbreak Alert and Response Network
► IHR International Health Regulations ► PAHO Pan American Health Organization
• Culling of Infected/Exposed Poultry
• U.S. Government Pledge- $334 Million to Global Campaign
• EU extension of Monitoring Program
• Business Pandemic Contingency Planning
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CCCHST NIEHS
Short, Medium, Long-term Planning• There will be more than one wave of infection during
a pandemic event – Each wave could typically last about 8 weeks
• Businesses should plan for 30-50% employee absences for periods of about two weeks
• Continuity planning is a must
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CCCHST NIEHS
Continuity Planning• Planning should include:
– Identification of essential business activities
– Mitigation of business/economic disruptions• This includes shortages of supplies
– Minimizing illness in employees and customers
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CCCHST NIEHS
Continuity Planning• Identify essential employees and critical inputs• Train and prepare ancillary workforce• Determine impact on company business• Determine impact on business related travel• Establish emergency communications plan• Implement and EXERCISE the plan
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CCCHST NIEHS
Continuity Planning• Forecast and allow employee absences• Encourage and track influenza vaccination• Identify employee and key customers with special
needs• Provide information for the at-home care of ill
employees• Ensure communications are culturally and
linguistically appropriate
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CCCHST NIEHS
Identification of Core People and Skills• What are the essential parts of the business?• Who are the core people to keep it running?• What are the core skills to keep it running?• Are there sufficient back-up for people and
skills? Who and where are they?
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CCCHST NIEHS
Pandemic Challenges and Preparation• Social disruption may be widespread• Ability to work may be difficult or impossible• Schools may be closed for extended periods• Transportation services may be disrupted• People will need advice and help at work and
home
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CCCHST NIEHS
Be Prepared (not just for pandemic)
• Store a supply of water and food– All hazards preparedness
• Stockpile of prescription and non-prescription medications and supplies
• Wash your hands, wash your hands, wash your hands
• Cover coughs and sneezes
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CCCHST NIEHS
Training
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CCCHST NIEHS
Standards of Performance• We can train responders to perform
safely once we understand why they engage in unsafe acts
• Performance is a function of its consequences
• People do what they do because of:– What happens to them
– What does not happen to them
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CCCHST NIEHS
Perceived Value• A responder’s perception of the consequences
of his or her performance focuses largely on “perceived value”
• Values vary greatly among individuals
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CCCHST NIEHS
Another Thought on Perception
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CCCHST NIEHS
Consequence Factors• Timing
– soon
• Consistency– certain
• Significance– positive
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CCCHST NIEHS
Why Train to Change Performance?
IDIOT
So we that will not operate in a logic free environment!
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CCCHST NIEHS
Why Train to Change Performance?• Keeps people from getting hurt
• Equipment is not damaged
• Keeps the response moving forward
• Time is not wasted
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CCCHST NIEHS
Safety is an activity function driven by what we do daily• The primary goal for any safety process is to
cultivate safer responders
• Safer responders are a result of performance changes, in that they recognize unsafe or at risk performance for what they are, and then do something about it
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CCCHST NIEHS
The primary factors for causing at risk or unsafe performance are:
• Hurrying
• Frustration
• Fatigue
• Complacency (attitude)
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CCCHST NIEHS
Eyes Not on Task(especially with today’s gas prices)
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CCCHST NIEHS
Mind Not on Task
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CCCHST NIEHS
Loss of balance; traction; grip
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CCCHST NIEHS
Stay out of the line of fire…
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CCCHST NIEHS
Stay out of the line of fire…
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CCCHST NIEHS
Eyes and mind not on task while losing balance, traction and grip and placing self in the line of fire
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CCCHST NIEHS
Safety• People
• Environment
• Property
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NIEHS CCCHST
DHS DHS
Foreign Animal Disease Response
Training for Responders
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NIEHS CCCHST
DHSDHS
Avian Influenza ResponseTraining for Responders
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CCCHST NIEHS
Focus of DHS Programs• Collaborate with State Departments of
Agriculture and State Departments of Homeland Security to deliver training to our response community
• Train Master Trainers in all states that will train Training Officers from all jurisdictions and disciplines to reach 300,000 responders across the nation
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CCCHST NIEHS
Questions?Ron Snyder MEd., CET
AgPreparedness Center
Kirkwood Community College
Cedar Rapids, IA 52406
800.464.6874
319.398.5678