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- 871977
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- 2013-3-27
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- 1970-1-1
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Background: Spring comes, flu comes.
In the past--ex. : SARS/swine flu
Today-- ex. H7N9(first case happens in Shanghai, the number is increasing.)
Analysis: this virus infect birds first, and then humans.
--certified in Shanghai(pigeons killed.)
Principle about infection: the virus has three types, ---develop----> subtypes----->different strains---->interspecific infection
ex. H5N1 can only infect birds, but H7N9 may spread among humans
Why it is called swine flu? reason: swine is the media to help create H7N9 (a virus can both infect birds and humans)
Currently occasion: no vaccine, no specific drug(relevant drug: ose, zan)
Methods to shrink the infection scale: wash hands, no traveling, take the virus seriously, and more severe surveilance <-------------------------this is the passage's point.
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