Serologic Evidence of H1 Swine Influenza Virus Infection in Swine Farm Residents and Employees
Christopher W. Olsen* , Lynnette Brammer†, Bernard C. Easterday*, Nancy Arden†‡, Ermias Belay†, Inger Baker†, and Nancy J. Cox†
Author affiliations: *University of Wisconsin-Madison, Madison, Wisconsin, USA; †Centers for Disease Control and Prevention, Atlanta, Georgia, USA; ‡College of Medicine, Texas A & M University, College Station, Texas, USA;
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