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This chart is from a link provided by Cozodapo 
http://www.ifpma.org/Influenza/conte...ic_Impact.html
Pandemic Impact :
Table: Health and Economic Effects of Influenza Pandemics in the 20th Century: Projections for the Next Pandemic
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Source:
All information from the: Congressional Budget Office. A potential influenza pandemic: Possible macroeconomic effects and policy issues, Washington, DC: The Congress of the United States, Congressional Budget Office; December 2005. unless otherwise noted.
1 National Vaccine Program Office. Pandemics and pandemic scares in the 20th century. U.S. Department of Health and Human Services. Available online at: http://www.hhs.gov/nvpo/pandemics/flu3.htm. Updated 2/14/02005. Accessed 1/4/06;
2 Trust for America?s Health. A killer flu? Washington, DC: Trust for American?s Health; June 2005;
3 ?Influenza Pandemic Preparedness - Information Kit for Health Care Workers" by Centre for Health Protection, Hong Kong and "Avian influenza: assessing the pandemic threat" by World Health Organization;
4 Brahmbhatt M. Avian influenza: Economic and social impacts. World Bank Report. Released 9/23/2005;
5 Centers for Disease Control and Prevention. Public health prepares. Pandemic Influenza Update. Jan 5, 2005.
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http://www.ifpma.org/Influenza/conte...ic_Impact.html
Pandemic Impact :
Table: Health and Economic Effects of Influenza Pandemics in the 20th Century: Projections for the Next Pandemic
<TABLE class=table cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR><TD class=tablecells_blue_smallpad> </TD><TD class=tablecells_blue_smallpad vAlign=top>
Spanish Influenza (H1N1), 1918-1919
</TD><TD class=tablecells_blue_smallpad vAlign=top>Asian Flu (H2N2), 1957-1958
</TD><TD class=tablecells_blue_smallpad vAlign=top>Hong Kong Flu (H3N2), 1968-1969
</TD><TD class=tablecells_blue_smallpad vAlign=top>Mild Avian Influenza (H5N1), projection
</TD><TD class=tablecells_blue_smallpad vAlign=top>Severe Avian Influenza (H5N1), projection
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Illness (Worldwide)
</TD><TD class=tablecells vAlign=top>500 million; 20-40% of total world population?
</TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top></TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Hospitalizations
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>314,000- 2.3 million?
</TD><TD class=tablecells vAlign=top>734,000- 4.7 million?
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Dead (worldwide)
</TD><TD class=tablecells vAlign=top>40-50 million
</TD><TD class=tablecells vAlign=top>2 million
</TD><TD class=tablecells vAlign=top>1 million
</TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top></TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Illness (U.S.)
</TD><TD class=tablecells vAlign=top>Unknown (but about 20-40% of the world population fell ill)
</TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top></TD><TD class=tablecells vAlign=top>75 million/ 25% of the total U.S. population
</TD><TD class=tablecells vAlign=top>90 million/ 30% of the total U.S. population
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Outpatient visits
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>18 million
</TD><TD class=tablecells vAlign=top>42 million
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Dead (U.S.)
</TD><TD class=tablecells vAlign=top>500,000-675,000
</TD><TD class=tablecells vAlign=top>70,000
</TD><TD class=tablecells vAlign=top>36,000
</TD><TD class=tablecells vAlign=top>100,000
</TD><TD class=tablecells vAlign=top>2 million
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Attack rate (percentage of total population who fall ill)
</TD><TD class=tablecells vAlign=top>40%? Highest among adults age 20-50 years*
</TD><TD class=tablecells vAlign=top>20-70%? Highest among adults >65
</TD><TD class=tablecells vAlign=top>15%? Highest among adults >65
</TD><TD class=tablecells vAlign=top>25%
</TD><TD class=tablecells vAlign=top>30%
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Case-fatality rate in the U.S. (percentage of ill who die)
</TD><TD class=tablecells vAlign=top>2.5%
</TD><TD class=tablecells vAlign=top>0.1-0.2%
</TD><TD class=tablecells vAlign=top>0.1-0.2%
</TD><TD class=tablecells vAlign=top>0.1%
</TD><TD class=tablecells vAlign=top>2.5%
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Virulence
</TD><TD class=tablecells vAlign=top>High; able to kill young/ healthy in >48 hours
</TD><TD class=tablecells vAlign=top>Low; elderly, chronically ill most susceptible
</TD><TD class=tablecells vAlign=top>Low; elderly chronically ill most susceptible
</TD><TD class=tablecells vAlign=top>Low; elderly chronically ill most susceptible
</TD><TD class=tablecells vAlign=top>High
</TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Economic Cost (U.S.)
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>$100-200 
</TD><TD class=tablecells vAlign=top></TD></TR><TR><TD class=tablecells_blue_smallpad vAlign=top align=right bgColor=#cbebed>Economic Cost (Worldwide)
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>Unknown
</TD><TD class=tablecells vAlign=top>$800 
</TD><TD class=tablecells vAlign=top>Source:
All information from the: Congressional Budget Office. A potential influenza pandemic: Possible macroeconomic effects and policy issues, Washington, DC: The Congress of the United States, Congressional Budget Office; December 2005. unless otherwise noted.
1 National Vaccine Program Office. Pandemics and pandemic scares in the 20th century. U.S. Department of Health and Human Services. Available online at: http://www.hhs.gov/nvpo/pandemics/flu3.htm. Updated 2/14/02005. Accessed 1/4/06;
2 Trust for America?s Health. A killer flu? Washington, DC: Trust for American?s Health; June 2005;
3 ?Influenza Pandemic Preparedness - Information Kit for Health Care Workers" by Centre for Health Protection, Hong Kong and "Avian influenza: assessing the pandemic threat" by World Health Organization;
4 Brahmbhatt M. Avian influenza: Economic and social impacts. World Bank Report. Released 9/23/2005;
5 Centers for Disease Control and Prevention. Public health prepares. Pandemic Influenza Update. Jan 5, 2005.
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