Theproductis alreadymarketedinEurope, AustraliaandCanada by SanofiPasteur, the vaccine division of French drug giant Sanofi, previously known as Sanofi-Aventis SA.
As a result, the U.S. may only have half the vaccine it needs--too much for AventisPasteur, the only other maker of flu vaccine, to make up for on short notice.