„Svínaflensa“: Munur á milli breytinga

Fólk sem vinnur með svín og svínaafurðir getur sýkst af afbrigðum af svínaflensu og getur vírusinn stökkbreyst þannig að svínaflensa geti smitast milli manna. Talið er að afbrigðið sem olli [[Svínaflensufaraldurinn 2009|Svínaflensufaraldrinum 2009]] sé þannig stökkbreyting af [[H1N1]] afbrigði <ref>[http://www.who.int/mediacentre/news/statements/2009/h1n1_20090427/en/index.html Swine influenza] Word Health Organization</ref>

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