http://www.chicagotribune.com/health/sns-rt-us-birdflu-pandemic-vaccinationbre86a06b-20120710,0,2871923.story
/ H5N1 chickens turkeys ducks deadly virus epidemic pandemic pre-pandemic vaccination immunizing advance flu vaccine higher-yield technologies immunization H1N1 flu influenza stockpiled front-line medical staff Pharmaceutical companies production capacity World Health Organisation WHO Annual seasonal campaigns immunize risk /
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