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USA, CDC, 2015 http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6401a4.htm?s_cid=mm6401a4_w Overall vaccine effectiveness (VE) (adjusted for study site, age, sex, race/ethnicity, self-rated health, and days from illness onset to enrollment) against laboratory-confirmed influenza associated with medically attended ARI was 23% -but you have paid 100% -and it is only "againts symptoms of laboratory-confirmed influenza associated with medically attended ARI" -no effect neither valoration of hospitalizations, pneumonias, deaths -un saludo -juan gérvas --- Este mensaje no contiene virus ni malware porque la protección de avast! Antivirus está activa. http://www.avast.com