Abstract

Background: The (H1N)1v influenza virus infection emerged in 2009 as a serious disease in targeted populations. Herein, we report on the tolerability and efficacy of (anti-H1N1)v vaccination in dialysis and transplant patients.Methods: 18 renal-transplant recipients (RTR) and 19 dialysis patients (DP) [12 patients treated with peritoneal dialysis (PDP), 7 patients treated with haemodialysis (HDP)] were enrolled. DPs received one monovalent H1N1 adjuvanted-vaccine injection, and RTRs received two unadjuvanted vaccine injections within a 21-day period. Serologic response was defined as a haemagglutination inhibition titre of >40 (seroprotection) and/or at least a four-fold increase in antibody titre from baseline (seroconversion).Results: Seroprotection rate after vaccination was greater in DPs than RTRs (p = 0.007), as was seroconversion (p = 0.001). Serologic response was similar in PDPs and HDPs.Conclusions:. Serologic response was satisfactory in DPs, whichever dialysis mode (DPD or HDP). It was low in RTRs as compared to DPs. word count 149

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