Swine Influenza Virus Antibodies in Humans, Western Europe, 2009
Nancy A. Gerloff, Jacques R. Kremer, Emilie Charpentier, Aurélie Sausy, Christophe M. Olinger, Pierre Weicherding, John Schuh, Kristien Van Reeth, and Claude P. Muller
Author affiliations: Author affiliations: Centre de Recherche Public de la Santé/Laboratoire National de Santé, Luxembourg, Grand-Duchy of Luxembourg (N.A. Gerloff, J.R. Kremer, E. Charpentier, A. Sausy, C.P. Muller); Laboratoires Réunis, Junglinster, Luxembourg (C.M. Olinger, J. Schuh); Health Directorate, Luxembourg (P. Weicherding); Ghent University, Ghent, Belgium (K. Van Reeth)
Figure. Geometric mean titers (>10) of antibodies against pandemic (H1N1) 2009 virus, seasonal influenza (H1N1) virus, and swine influenza virus of swine workers (A, B, C) and controls (D). Each symbol represents titer of 1 person; only persons with positive results (>10) for at least 1 of the 2 viruses of the panel are shown. Trend lines are shown; R2 values were R2>0.01 for panels A, B, and D and R2 = 0.5 for panel C.
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