An employee checks vials of Panenza, a H

An employee checks vials of Panenza, a H1N1 flu vaccine by the Sanofi-Pasteur manufacturer on October 19, 2009 in Val-de-Reuil, western Paris. Sanofi-Pasteur produces almost ten million H1N1 vaccines per week, the most significant production rate in the world. France will begin on October 20, 2009 vaccinating key medical workers against swine flu and will continue the prevention campaign for the general population early next month, officials said. AFP PHOTO / THOMAS COEX (Photo credit should read THOMAS COEX/AFP/Getty Images)