Influenza vaccination is usually recommended for HIV-infected children. One hundred and twenty seven HIV-infected and twenty-one HIV-uninfected children aged ≥6 months to <18 years, all of whom were naïve to influenza vaccine, were enrolled to receive an influenza Trivalent Inactivated Vaccine (TIV). In the HIV group, the post-vaccination immune response (geometric mean titer, seroconversion and seroprotection rates) correlated with their immunological status before vaccination. The HIV-infected children with no immunosuppression had comparable serological response to HIV-uninfected children. For moderately and severely immunosuppressed HIV groups, two doses of TIV resulted in greater serological responses and should be recommended in these groups.
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