U.S. Orders Extra 27.3 Million Doses of H1N1 Vaccine, Bringing Nation's Total to 251 Million

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U.S. health officials have ordered more swine flu vaccine — bringing the nation's eventual total to 251 million doses.

The government on Monday ordered an extra 27.3 million doses from Sanofi Pasteur of France, which produces flu shots at its Swiftwater, Pa., factory. It also ordered 29 million more doses of the nasal-spray version of swine flu vaccine, MedImmune LLC's FluMist.

The news came as health officials announced Monday that while people 10 and older are protected by one dose of swine flu vaccine, children 9 and younger almost certainly will need two.