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<p>We evaluated the magnitude and function of antibody responses to seasonal influenza vaccination in individuals with HIV receiving ART compared with individuals without HIV. In a prospective cohort of 78 adults, influenza strain-specific IgG levels were measured up to one-year post-vaccination. Linear mixed-effects models assessed longitudinal trends. IgG levels peaked at two weeks and declined gradually in both groups. HIV status did not significantly influence antibody magnitude or neutralizing activity, and H1N1 antibody levels correlated with neutralization titers. These findings demonstrate robust, durable, and functional humoral response in well-controlled HIV, supporting the effectiveness of annual influenza vaccination in this population.</p>

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People with HIV on antiretroviral therapy demonstrate robust humoral response to influenza vaccination

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月29日

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  • Preeti Moar,
  • Pauline A. Ocaya,
  • Christoffer Granvik,
  • Julia Wigren Byström,
  • Koushikul Islam,
  • Niklas Arnberg,
  • Therese Thunberg,
  • Mattias N. E. Forsell

摘要

We evaluated the magnitude and function of antibody responses to seasonal influenza vaccination in individuals with HIV receiving ART compared with individuals without HIV. In a prospective cohort of 78 adults, influenza strain-specific IgG levels were measured up to one-year post-vaccination. Linear mixed-effects models assessed longitudinal trends. IgG levels peaked at two weeks and declined gradually in both groups. HIV status did not significantly influence antibody magnitude or neutralizing activity, and H1N1 antibody levels correlated with neutralization titers. These findings demonstrate robust, durable, and functional humoral response in well-controlled HIV, supporting the effectiveness of annual influenza vaccination in this population.