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Mexico working on a vaccine to prevent the spread of bird flu

17 July 2012 Last updated at 16:16 BST

After an outbreak of the avian flu last month which led to the slaughter of more than two million infected birds, Mexico is getting a vaccination ready to prevent the spread of the disease.

Authorities say that enough vaccines would be ready by the end of this month to combat the H7N3 virus.

Maria Eugenia Dupin reports.