Multimodal safety assessment of measles-mumps-rubella vaccination after pediatric liver transplantation.

Live-attenuated vaccines are currently contraindicated in solid-organ transplant recipients. However, the risk of vaccine-preventable infections is lifelong, and can be particularly severe after transplantation. In this prospective interventional national cohort study, 44 pediatric liver transplant recipients with measles IgG antibodies <150 IU/L (below seroprotection threshold) received measles-mumps-rubella vaccine (MMR) at a median of 6.3 years posttransplantation (interquartile range, 4.0 to 10.9). A maximum of two additional doses were administered in nonresponders or when seroprotection was lost. Vaccine responses occurred in 98% (95% confidence interval [CI], 88-100) of patients. Seroprotection at 1-, 2-, and 3-year follow-up reached 62% (95% CI, 45-78), 86% (95% CI, 70-95), and 89% (95% CI, 67-99), respectively. All patients responded appropriately to the booster dose(s). Vaccinations were well tolerated and no serious adverse event attributable to vaccination was identified during the 8-week follow-up period (or later), using a multimodal approach including standardized telephone interviews, diarized side effect reporting, and monitoring of vaccinal virus shedding. We conclude that live attenuated MMR vaccine can be administered in liver transplant recipients fulfilling specific eligibility criteria (>1 year posttransplantation, low immunosuppression, lymphocyte count ≥0.75 G/L), inducing seroprotection in most subjects. (Clinicaltrials.gov number NCT01770119).

Psycho-social outcome in liver transplanted children: beware of emotional self-assessment!

BACKGROUND: Psycho-social outcome in children after liver transplantation (LT) is known to be inferior to age-related peers. Yet, when children and their parents are questioned by their nurse or physician about the child's psycho-social well-being, the answers usually are very positive. We hypothesized that patients and their parents after LT report their psycho-social well-being too enthusiastically when enquired by their personal care takers. INCLUSION CRITERIA: LT at the Children's University Hospital of Geneva 1992-2007, age >3 years, <16 years, time after LT >2 years. Children and their parents were questioned by their well-known, familiar nurse at the annual follow up visit about their personal well-being. To allow for evaluation of answers, scores (good, medium, bad) were attributed to the different questions. 46 children were included in the study. RESULTS: Mean age at enquiry was 9.7 years (SD 4 years), mean time after LT was 7.5 years (SD 4.2 years). The different themes were reported as good for: parent-child relationship (83%), relationship with peers (98%), relation with siblings (39%), sport activities (54%), play activities (78%), school performance (87%), expression skills (67%), and general behavior (89%). CONCLUSION: Most of our LT children and their parents consider, during a personal interview with a closely related, familiar nurse, that the child's psycho-social outcome is good. Yet, it is generally acknowledged that children after LT have negatively altered psycho-social outcomes. Thus, emotionally influenced reports about psycho-social outcome in children after LT must be looked at with care.