Spanish flu of 1918-1919 - PowerPoint PPT Presentation

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Spanish flu of 1918-1919

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Exam #4 W 5/6 in class (don't forget your cheat sheet) Final Exam T 5/19 at 9am-noon E. coli Phage virus Fungus from soil Ebola Spanish flu of 1918-1919 How many ... – PowerPoint PPT presentation

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Title: Spanish flu of 1918-1919


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(No Transcript)
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Spanish flu of 1918-1919
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How many people die from the flu in a normal
year in the U.S.?
4
How many people die from the flu in a normal
year in the U.S.? 36,000
http//www.cdc.gov/flu/about/disease/index.htm
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How many people die from the flu in a normal
year in the U.S.? 36,000 About 90 are over 65
years old
http//www.cdc.gov/flu/about/disease/index.htm
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Fig 35.8
Basic viral reproductive cycle
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(No Transcript)
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Your immune system helps protect against
infections
Fig 49.4
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B-cells make antibodies that bind to antigens
marking them for destruction
Fig 49.12
Marked for destruction by WBC
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It can take 7-14 days to produce sufficient
antibodies to eliminate a pathogen
Fig 49.14
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Memory B-cells make the response to a second
exposure more rapid
Fig 49.12
This is how vaccines work.
Marked for destruction by WBC
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Vaccines work via memory B-cells that make the
response to a second exposure more rapid
Fig 49.14
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