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  • Title: Factors associated with pandemic influenza A/H1N1 vaccine coverage in a French cohort of HIV-infected patients.
    Author: Cotte L, Voirin N, Richard C, Brochier C, Schlienger I, Lack P, Lina B, Vanhems P, Zoulim F.
    Journal: Vaccine; 2011 Aug 05; 29(34):5638-44. PubMed ID: 21699948.
    Abstract:
    BACKGROUND: A mass influenza A/H1N1 vaccination campaign took place in France during the 2009 winter. Overall, 7.9% of the general population was vaccinated. However, vaccine coverage data are missing for at-risk groups. METHODS: A vaccination centre was implemented for HIV-infected patients followed-up in a French University Hospital. Demographical, clinical and biological characteristics were collected. Adjusted odds ratios (aOR) were calculated to identify factors associated with being vaccinated against A/H1N1 influenza. RESULTS: A/H1N1 vaccine coverage was 44.4% (635/1430) in HIV-infected patients. In univariate analysis, uptake of vaccination was significantly associated with male gender, men who have sex with men, age ≥ 50 years, ≥ 1 seasonal influenza risk factor, longer HIV disease, longer duration of antiretroviral therapy, greater number of lines of antiretroviral treatments, lower nadir CD4, recent HIV-RNA<50 copies/ml, previous pneumococcal vaccination, > 2 visits to the unit during the study period and follow-up by a physician who assessed ≥ 100 patients/year (senior physician). CDC stage, recent CD4 count, diabetes, BMI>30 and pregnancy were not associated with vaccination. After multivariate analysis, vaccination remained significantly associated with age ≥ 50 years (aOR 1.56, CI 1.16-2.09), time since HIV diagnosis (aOR per 1 year 1.02, CI 1.00-1.04), previous pneumococcal vaccination (aOR 2.56, CI 1.96-3.34), >2 visits to the unit (aOR 5.09, CI 3.87-6.68) and follow-up by a senior physician (aOR 1.73, CI 1.20-2.48). CONCLUSION: A/H1N1 vaccination was more successful in HIV-infected patients than in the French general population. Organization of the vaccination in a convenient location and implication of the physicians seem to be determining factors for A/H1N1 acceptability in this population.
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