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Medical Microbiology and Immunology
2012, DOI: 10.1007/s00430-012-0259-9
Original Investigation
?Trivalent influenza vaccination of healthy adults 3 years after the onset of swine-origin H1N1 pandemic: restricted immunogenicity of the new A/H1N1v constituent??
R. Allwinn, M. Bickel, C. Lassmann, S. Wicker and I. Friedrichs
?Trivalent influenza vaccination of healthy adults 3 years after the onset of swine-origin H1N1 pandemic: restricted immunogenicity of the new A/H1N1v constituent??
R. Allwinn, M. Bickel, C. Lassmann, S. Wicker and I. Friedrichs
Medical Microbiology and Immunology, Online First?, 18 September 2012
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Abstract
Influenza vaccination is advised annually to reduce the burden of influenza disease. For sufficient vaccine campaigns also a continuous adoption of influenza vaccines are necessary, due to particularly high genetic variability of influenza A virus. Therefore, we evaluate the effectiveness of the trivalent influenza vaccine 2010/2011, against influenza A (H1N1, H3N2) and influenza B. Immune response was investigated in paired sera from 92 healthcare workers with the hemagglutination inhibition assay (HI). Protective antibody levels (HI titer ≥40) were found after vaccination for influenza A/California/07/2009(H1N1): 84.71 % [GMT: 115.34]; for influenza A/Perth/16/2009(H3N2): 94.94 % [GMT: 268.47] and for influenza B/Brisbane/60/2008: 96.20 % [GMT: 176.83]; matching with the currently circulating virus strains. However, the highest seroprevalence rate was found against influenza B; pre- and post-vaccination titers as well, which may be due to comparatively high virus preservation. Remarkable, lowest seropositivity was seen against H1N1. Despite the significant titer rise, sufficient H1N1 herd immunity was still not achieved. It can be assumed that a high influenza A herd immunity may be a requirement for a successful booster vaccination.
2012, DOI: 10.1007/s00430-012-0259-9
Original Investigation
?Trivalent influenza vaccination of healthy adults 3 years after the onset of swine-origin H1N1 pandemic: restricted immunogenicity of the new A/H1N1v constituent??
R. Allwinn, M. Bickel, C. Lassmann, S. Wicker and I. Friedrichs
?Trivalent influenza vaccination of healthy adults 3 years after the onset of swine-origin H1N1 pandemic: restricted immunogenicity of the new A/H1N1v constituent??
R. Allwinn, M. Bickel, C. Lassmann, S. Wicker and I. Friedrichs
Medical Microbiology and Immunology, Online First?, 18 September 2012
Hide Summary
Download PDF (343.4 KB)
View HTML
Abstract
Influenza vaccination is advised annually to reduce the burden of influenza disease. For sufficient vaccine campaigns also a continuous adoption of influenza vaccines are necessary, due to particularly high genetic variability of influenza A virus. Therefore, we evaluate the effectiveness of the trivalent influenza vaccine 2010/2011, against influenza A (H1N1, H3N2) and influenza B. Immune response was investigated in paired sera from 92 healthcare workers with the hemagglutination inhibition assay (HI). Protective antibody levels (HI titer ≥40) were found after vaccination for influenza A/California/07/2009(H1N1): 84.71 % [GMT: 115.34]; for influenza A/Perth/16/2009(H3N2): 94.94 % [GMT: 268.47] and for influenza B/Brisbane/60/2008: 96.20 % [GMT: 176.83]; matching with the currently circulating virus strains. However, the highest seroprevalence rate was found against influenza B; pre- and post-vaccination titers as well, which may be due to comparatively high virus preservation. Remarkable, lowest seropositivity was seen against H1N1. Despite the significant titer rise, sufficient H1N1 herd immunity was still not achieved. It can be assumed that a high influenza A herd immunity may be a requirement for a successful booster vaccination.
