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机译:The burden of influenza-like illness in the US workforce
Ctr Dis Control & Prevent, Carter Consulting, NCIRD, Atlanta, GA 30329 USA;
Ctr Dis Control & Prevent CDC, NCIRD, Atlanta, GA 30329 USA;
Ctr Dis Control & Prevent CDC, Battelle Mem Inst, NCIRD, Atlanta, GA 30329 USA;