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Via email from the White House:

WASHINGTON – Obama administration officials will host an on-camera briefing this afternoon in the White House Press Briefing Room to provide an update on swine influenza in the United States and the government response.

WHO: Secretary Janet Napolitano, Department of Homeland Security
Dr. Richard Besser, Acting Director, Centers for Disease Control and Prevention
John Brennan, Assistant to the President for Homeland Security
White House Press Secretary Robert Gibbs

WHEN: Sunday, April 26, 2009 – 12:30pm EDT

WHERE: White House Press Briefing Room